Training method and training aid

Abstract

The training method is characterized by including the steps of: causing the lateral abdominal muscles, such as the transverse abdominal muscle, to contract by the trainer himself or herself to make the abdominal circumference concave; causing a long training tool (6) made of an elastic foam having buoyancy, stretchability, and softness to cover the upper pelvis to the lower side of the 10th rib from the abdominal circumference of the trainer himself or herself made concave while being stretched and tightened; and performing training while maintaining the concave state of the abdominal circumference using the contraction force of the training tool (6).

Description

Technical Field

[0001] The purpose of this invention is to provide swimming training methods and equipment for beginner swimmers with various swimming styles, enabling them to overcome the fear of drowning caused by breathing difficulties in the water as soon as possible, and to provide efficient swimming instruction for multiple people. Background Technology

[0002] Also, in order to prevent flood accidents, we want to allocate sufficient time for teaching swimming to children and students in the physical education courses of primary, middle and high schools. However, various problems such as insufficient class time, insufficient swimming instructors or abandoned swimming pools in aging schools will occur, thus leading to a dilemma.

[0003] Most people who can't swim receive insufficient swimming instruction in a short period of time. In particular, the fear of drowning due to difficulty breathing in the water can stay with them for life and lead to a dislike and resistance to swimming.

[0004] Given this background, most swimming instructors struggle with how to conduct swimming lessons efficiently in a short period of time, and they explore methods to help both those who can barely swim and those who can swim to master basic swimming skills within a limited lesson time.

[0005] Patent Document 1 describes a swimming training method and a swimmer information measuring device. In the case of swimming beginners, due to insufficient strength of the abdominal and back muscles, it is difficult to make the center of buoyancy close to the center of gravity and maintain a horizontal posture in the water based on their own feeling. In order to solve this problem, the center of gravity of the swimmer and the center of buoyancy and buoyancy of the swimmer in a prone floating state of pushing off the wall and gliding in the water are measured and used as swimmer information. Based on the swimmer information, a balancer that applies buoyancy to the swimmer's body is installed, thereby adjusting the difference between the center of gravity and the center of buoyancy.

[0006] Patent Document 2 describes a swimsuit for freestyle practice, wherein the swimsuit is obtained in the following manner: Regarding the buoyancy material called the assistant that is fixed to the waist by a rope, when used in freestyle swimming, the head tends to sink, making breathing difficult. Since it is tied to the body by a rope, it may shift or dig into the abdomen, causing discomfort and making it impossible to maintain the preferred water posture. In order to solve this problem, a buoyancy material made of a sheet-like, independently foamed material is used. Taking into account the wearer's center of buoyancy, the buoyancy material for the lower body is installed in the swimsuit in such a way that the buoyancy of the buoyancy material for the lower body is greater than or equal to that of the buoyancy material for the upper body.

[0007] Patent document 3 describes the following: In order to improve the problem that beginner swimmers often fall into, "when subjected to rotational forces caused by buoyancy and gravity in water, the pelvis 3 rotates around the line connecting the left and right anterior superior iliac spines, which easily leads to a posture where the pelvis 3 tilts backward and the legs and waist sinks," a buoyancy material is placed in the prone position in the water, with the line connecting the left and right anterior superior iliac spines of the pelvis 3 as the center, at the position where the rotational torque acts in the direction that tilts the pelvis 3 forward. Even beginners can easily maintain the streamlined shape of the pelvis 3 tilting forward.

[0008] Patent document 4 describes a belt with a float, wherein the belt with the float has the following structure: when a person who is not good at swimming wants to practice swimming and uses a float, the float prevents the hands from moving freely. Therefore, if they want to move their hands and arms freely, they cannot use the float, and if they want to rely on the float, their hands cannot move. In order to solve this problem, the float is installed on a wide belt with the buoyancy body of the float located on the front and back of the waist part of the body, and is wrapped around the narrowing part of the waist part of the body.

[0009] Patent document 5 describes a swimming float for practice. This swimming float is designed for use by the elderly, beginners, or people with disabilities. It consists of a rectangular float with a U-shaped, rounded corner that is shaped like a gentle curve corresponding to the human body. A wide rubber band is added to the center of the float. The rubber band is inserted alternately and repeatedly at the seam on the outside of the float. The float is then integrated with the face fasteners at both ends.

[0010] Patent document 6 describes a protective gear in which gas is injected into the expansion portion housed in the storage section to increase its volume. This gas is then pressed against the wearer's abdomen from front to back and upward, causing a repulsive force to act on the rectus abdominis muscle located in the anterior abdomen. Consequently, a contractile force is applied to the inner abdominal muscles connected to the rectus abdominis muscle (especially the transverse abdominis and internal oblique muscles). This exercise can strengthen the inner abdominal muscles of the wearer's waist, achieving a preventive effect against lower back pain and improving the stability of the wearer's lumbar spine, thus providing pain relief for wearers with lower back pain.

[0011] Patent document 7 describes an underwater training belt in which, in order to train muscles, a prescribed pressure is applied to specific parts of the user's limbs in water, thereby restricting the flow of blood to the user's muscles without stopping the flow of blood. Therefore, the underwater training belt has: a first elastic band member configured to be wound around the specific part; a second band member connected to one end of the first band member; an air bag disposed inside the first band member having a specific length equivalent to the circumference of the specific part; a buckle connected to the other end of the first band member; a first hook-and-loop fastener disposed on at least a portion of the surface of the first band member; and a second hook-and-loop fastener disposed on the substantially entire surface of the second band member.

[0012] Patent document 8 describes a training method in which, in order to exercise the muscles around the ribcage, a rectangular, stretchable training belt with a longitudinal length that can cover the chest from the upper part of the abdomen is prepared. The training belt is wrapped around the ribcage and fixed in a stretched state, covering the ribcage from the upper part of the abdomen in a loaded manner, so as to breathe in a way that resists the load of the training belt covering the ribcage from the upper part of the abdomen.

[0013] Existing technical documents

[0014] Patent documents

[0015] Patent Document 1: Japanese Patent No. 5801795

[0016] Patent Document 2: Japanese Patent No. 5855347

[0017] Patent Document 3: Japanese Patent No. 5977184

[0018] Patent Document 4: Japanese Patent Application Publication No. 2002-65894

[0019] Patent Document 5: Japanese Utility Model Registration No. 3231436

[0020] Patent Document 6: Japanese Patent Application Publication No. 2013-094336

[0021] Patent Document 7: Republication of Patent No. WO2018-092202

[0022] Patent Document 8: Japanese Patent No. 6377874

[0023] Non-patent literature

[0024] Non-patent literature 1: Hirotoshi Ifuku et al., “Standing posture and characteristics of upper elementary school students”, Minutes of the Faculty of Education, Kumamoto University, No. 66, 267-272, 2017

[0025] Non-Patent Literature 2: Yoshida Naoki et al., "Visceral movement towards the head is associated with efficient swimming," Tohoku University Graduate School of Medicine, Tohoku University Hospital, December 17, 2020 Press Release.

[0026] Non-Patent Document 3: Shinichiro Moriyama et al., "Does the simultaneous voluntary contraction of the abdominal and trunk muscle groups during swimming affect performance?", Institution No. 12604, Project No. 15K16466, Research Results Report for Scientific Research Funding Assistance Project, June 4, 2016 Summary of the Invention

[0027] The problem that the invention aims to solve

[0028] None of the patent documents 1 to 8, or non-patent documents 1 to 3, can be said to have recognized and solved the basic issues required for beginner swimmers who cannot swim to quickly overcome the fear caused by breathing difficulties in the water and efficiently master swimming.

[0029] Regarding the swimming training method described in Patent Document 1, the following is described: by obtaining information about the swimmer each time the type and installation position of the balancer are changed, the condition that the center of gravity and the center of buoyancy are closer to the vertical line is found, and the balancer that is close to the condition is installed on the swimmer. Thus, by repeatedly practicing swimming, the swimmer can remember the sense of balance and maintain the balance of the horizontal posture even after the balancer is removed. This is similar to how a person who cannot ride a bicycle uses a bicycle with training wheels to learn the sense of balance, so that even a bicycle without training wheels can be ridden.

[0030] However, this applies to training on land and not to training in water. In the unique environment of water, most beginner swimmers suffer from the pain of not being able to breathe or swallowing large amounts of water, and may even drown, thus developing a fear of drowning. Overcoming this fear of drowning is not easy. The inability to breathe is directly related to life, and for this reason alone, it cannot be compared to the anxiety felt when losing balance on land, like removing training wheels from a bicycle. Overcoming this level of fear is not something that can be easily overcome.

[0031] In particular, the risk of drowning is extremely high if the buoyancy stabilizer is suddenly removed, making it difficult to breathe and swallow water. The distress of such a failure can turn into fear and linger in the mind of a beginner swimmer. When fear arises, the body stiffens and becomes unable to move freely, making swimming training impossible.

[0032] Therefore, in swimming training, there is a problem of how to overcome this fear of drowning, but Patent Document 1 does not recognize the existence of such breathing difficulties unique to water and does not disclose any solution.

[0033] Furthermore, as reported in Non-Patent Literature 1, "In recent years, children's physical strength has decreased significantly, resulting in a polarization trend between active and energetic children and inactive and weak children. The situation is quite serious, and the disorder of posture is noteworthy. If the posture is not good, the body will lose balance and there will be physical and mental incoordination. In particular, in the school setting, there have been reports of significant adverse effects on children and students, such as restlessness, inability to concentrate on lessons, inability to sit in a chair for a long time, and lack of results in learning or sports activities. This is an important issue that needs to be addressed." Many children and students have physical abnormalities.

[0034] Specifically, many children and students exhibit abnormal pelvic posture, which forms the basis of swimming training. According to... Figure 15 The method described by Kendall et al. (2006) determined the number of people who met each of the five categories of standing posture: A) Ideal, B) Backbend-Forward Bend (anterior pelvic tilt), C) Flat Back (slight posterior pelvic tilt), D) Backbend-Flat (posterior pelvic tilt), and E) Soldier (anterior pelvic tilt). The results reported that "out of 196 people, only 44 (22%) combined met the Ideal and Soldier types for good posture, while 152 (78%) met the Backbend-Forward Bend, Flat Back, and Backbend-Flat types, which were considered poor postures." However, training children with a high proportion of abnormal postures in swimming using the method described in Patent Document 1 is very difficult in terms of time and cost.

[0035] This is because it is not easy to measure the center of gravity of children and students with poor posture, or the center of buoyancy and buoyancy of swimmers in a prone floating position while pushing off the wall. Even if, based on the swimmer's information obtained through measurement, a removable, buoyant balancer could be installed on the swimmer's body to adjust the difference between the center of gravity and the center of buoyancy, it would require even more time. Moreover, preparing balancers individually is simply not feasible.

[0036] When wearing the freestyle swimsuit described in Patent Document 2, it is stated that the swimsuit allows the body to float naturally with the center of buoyancy as the fulcrum, making it easy to maintain a roughly horizontal and symmetrical correct posture in the water. However, the following line states that if buoyancy material is placed on the chest or back, the body is prone to rotation (rolling), making it difficult to maintain a correct posture in the water. This indicates that the effect varies depending on the placement of the buoyancy material, and like Patent Document 1, it has the drawback of not being able to adequately address the needs of a large number of children or students with different centers of buoyancy and center of gravity on an individual basis.

[0037] However, the section on "[Effects of the Invention]" only states that "after seven people who could not swim wore the swimsuit of this invention and practiced freestyle swimming, on the seventh day (two days a week for one hour of practice), five people were able to swim more than 25 meters freestyle. Among them, two people were able to swim more than 50 meters without the buoyancy material. Compared to the average time it takes to learn freestyle swimming (swimming 25 meters) at a swimming club (one to two days a week for about one hour of practice), it can be learned in a very short time." However, it does not explain why two people were unable to swim without the buoyancy material, thus raising doubts about the effectiveness of the invention, as the other five people still cannot swim.

[0038] Furthermore, the following is recorded: "When the buoyancy is increased to a certain extent, the buoyancy of buoyancy materials 14 and 16 is reduced. For example, it is preferable to replace the thicker (t=15mm) buoyancy material with a thinner (t=10mm) buoyancy material, and to remove the buoyancy materials 14 and 16 when the student has fully mastered the skill. More specifically, initially use buoyancy material with a thickness of t=15mm (buoyancy: 0.41kg×2 for the upper body, 0.45kg×2 for the lower body), and then use buoyancy material with a thickness of t=10mm (buoyancy: upper body..." (Use 0.27kg x 2 for the body and 0.3kg x 2 for the lower body). The goal of this instruction is to eventually enable children to swim without buoyancy material, using a mechanism that gradually guides them to swim by reducing the amount of buoyancy material. However, this method requires preparing buoyancy materials of varying thicknesses to correspond to the number of children or students being instructed. It would be impossible to provide such instruction by appropriately removing and replacing buoyancy material for each child or student based on their swimming ability, body shape, anterior pelvic tilt, posterior pelvic tilt, etc.

[0039] Regarding the swimsuit described in Patent Document 3, it utilizes buoyancy material to directly apply the rotational torque in the forward tilting direction to the pelvis, thereby enabling beginner swimmers to learn a streamlined anterior pelvic tilt. However, if... Figure 15As shown, human posture, spinal or pelvic tilt varies greatly, with at least five possible patterns. For someone with an anterior pelvic tilt, simply tilting the pelvis forward will result in a reverse lumbar arch, which is not ideal. Moreover, because swimsuits rely on buoyancy materials, without them, the fear of sinking cannot be overcome, leading to unnecessary exertion of force on the body, stiffening, and lower body sinking, making even basic streamlined movements impossible.

[0040] Furthermore, it states that "buoyancy materials can also be stored in a retractable or snap-fit ​​configuration, allowing for easy attachment and removal. This enables the buoyancy conditions to be set appropriately according to practice or purpose, and even when progressing to the point where a streamlined shape can be maintained, the buoyancy material can be removed and the swimsuit can be used directly." However, this pertains to swimsuits, and there is no record of how one can learn to swim without a swimsuit.

[0041] The float belt disclosed in Patent Document 4 allows the float to be worn close to the narrow part between the lower part of the sternum and the upper part of the pelvis. Therefore, it has the advantage of allowing the disabled to use their hands compared to using a kickboard or swimming ring. However, like the balancer described in Patent Document 1, there is no description of how the person can float, breathe, or become able to swim when the float is removed and there is no float.

[0042] In Patent Document 5, a rectangular floating mat with a U-shaped curve corresponding to the human torso and rounded corners is used as a practice swimming mat for the elderly, beginners or disabled people. However, this also has the same problem as Patent Documents 1 to 4: there is no record of whether one can overcome fear in the water, float, breathe and become able to swim after removing the floating mat.

[0043] Patent Document 6 describes a protective gear specifically designed for land use to strengthen the wearer's abdominal muscles and prevent lower back pain, making no mention of its use in water or the breathing techniques specific to swimming. Furthermore, it describes a plate-like support that, by injecting air into the expansion section, causes it to expand towards the wearer's abdomen, thus inhibiting the expansion of the expansion section relative to the wearer's abdomen and effectively pressing down on the abdomen. However, this support section restricts body movement, making it completely unsuitable for movements like swimming, where the body moves freely in water, such as butterfly stroke where the abdomen is concave or flexed, and the arms and legs move back and forth to flexibly change posture.

[0044] Patent Document 7 describes a water-based muscle strength training belt as being most suitable for pressure-based muscle strength training in water. However, even though it helps to apply prescribed pressure to specific parts of the hands or feet in a static state to train muscles, it is not suitable for swimming. Swimming is an activity that involves flexing and extending the body or reciprocating movements of the hands and feet to flexibly change posture; therefore, swimming is impossible in a fixed position. Moreover, it makes no mention of the issue of not drowning, which is unique to swimming.

[0045] The training method described in Patent Document 8 can produce posture improvement, trunk training, and performance enhancement effects in various sports. However, regarding the belt used for this training, it is only described as being made of elastic raw materials. There is no description of its use in swimming or water. It cannot quickly overcome the fear caused by breathing difficulties in water and can efficiently enable multiple people to master swimming.

[0046] Breathing during swimming Figure 15 (C) Figure 16 The unique swimming breathing technique shown in (C) (hereinafter referred to as swimming breathing) combines the characteristics of both land-based and... Figure 15 (A) Figure 16 The chest breathing shown in (A), and Figure 15 (B) Figure 16 (B) shows both sides of abdominal breathing. In particular, during swimming training in water such as a swimming pool, when practicing swimming-style breathing, the external intercostal muscles, accessory respiratory muscles, and diaphragm are activated when inhaling while the mouth or nose is above the water. Conversely, the internal intercostal muscles and abdominal muscles are activated when exhaling while the mouth or nose is submerged. The abdominal muscles play a more significant role.

[0047] It is not easy to spend time teaching swimming beginners this unique swimming breathing method that is different from ordinary breathing. When teaching the training method described in Patent Document 8, which is different from this swimming breathing method, swimming beginners will not know how to breathe in general and will become confused, making it fundamentally difficult to master swimming.

[0048] None of the patent documents 1 to 8 and non-patent documents 1 to 3 described above can be said to disclose the following swimming training methods and equipment: Figure 14 The five postures shown represent a variety of swimming styles and are designed for beginners or trainees to help them quickly overcome the fear of drowning caused by breathing difficulties in the water, thereby enabling many people to master swimming efficiently.

[0049] To teach swimming effectively with limited time and money, the first and most important thing is to reduce fear, aversion, and resistance towards water, thus preventing drowning. To address this issue and prevent drowning, "it's best to have training equipment (with sufficient buoyancy)," but to truly swim without relying on training equipment, "it's best to have no training equipment at all."

[0050] This presents a paradoxical problem: how to instruct swimmers under the opposing conditions of "ideally with training equipment" and "ideally without training equipment," while minimizing the fear of drowning and the inability to breathe underwater. The purpose of this invention is to provide a swimming training method and equipment that solves this fundamental problem of existing swimming training practices.

[0051] Methods for solving problems

[0052] In order to achieve the aforementioned objective, the present invention provides the following solution. The training method of the present invention is characterized by the following steps: the trainee contracts the transverse abdominis and other abdominal muscles to create a concave shape around the abdomen; a long, flexible, and elastic training tool is stretched and tightened to cover the area from the upper pelvis to below the 10th rib around the trainee's concave abdomen; and training is performed while maintaining the concave state around the abdomen using the contractile force of the training tool.

[0053] Furthermore, the training device of the present invention is a long, elastic, and flexible strip-shaped training device that is tightly wrapped around the abdomen of the trainee from the upper part of the pelvis to below the 10th rib. The training device is characterized by having a contractile force that tightens around the abdomen of the trainee in a manner that reduces the length around the abdomen of the trainee when wearing the training device by 3% to 20% compared to the length around the abdomen of the trainee when not wearing the training device at rest.

[0054] Invention Effects

[0055] As described above, according to the training method and equipment of the present invention, both children and adults can use the training equipment to help beginner swimmers who cannot swim maintain a draw-in state, while quickly overcoming the fear of drowning due to difficulty breathing in the water. Trainees can control their head and body according to their own will, feel and remember the draw-in, unique breathing method of swimming, and streamlined swimming technique. Therefore, it is possible to efficiently guide the training of multiple people in a short period of time.

[0056] As described above, the training apparatus of the present invention allows individuals of all ages and genders, regardless of their background, to breathe underwater while maintaining an extended posture, thus quickly overcoming the fear of drowning due to breathing difficulties. Furthermore, trainees can adjust the tightness of the apparatus around their abdomen while controlling their head and body, thereby experiencing and remembering the unique breathing methods and streamlined swimming techniques of extension and swimming. Moreover, by using the training apparatus of the present invention, even a swimming instructor can use the same apparatus for multiple trainees with different postures, body shapes, weights, and subcutaneous fat levels. After the trainees carefully check the tightness around their abdomen, they can adjust their extended posture and conduct swimming training, thus enabling efficient one-to-many swimming instruction. Attached Figure Description

[0057] Figure 1 This is an illustrative diagram showing the training device of the present invention worn around the abdomen of the trainee.

[0058] Figure 2 It is an illustrative diagram showing the relationship between the trainee's posture in the water and their center of gravity and center of buoyancy.

[0059] Figure 3 This is a diagram illustrating breathing while stretching while wearing training equipment.

[0060] Figure 4 This is a diagram illustrating breathing while wearing training equipment but not stretching.

[0061] Figure 5 This is a diagram illustrating breathing techniques for stretching without wearing any training equipment.

[0062] Figure 6 This is a diagram illustrating breathing without wearing training equipment or stretching.

[0063] Figure 7 This is an illustrative diagram comparing the distance from the water surface, the tilt of the pelvis, and the shape of the lungs and digestive organs in a stretching position with and without training equipment.

[0064] Figure 8 This is a flowchart explaining the relationship between the steps of wearing training equipment, stretching, inhalation, and exhalation, and the training venue.

[0065] Figure 9 The training equipment consists of a three-dimensional structure, including a front view and a rear view.

[0066] Figure 10 These are the exterior perspective, front view, and rear view of the training equipment, which consists of a double-layer structure.

[0067] Figure 11 This is an explanatory diagram illustrating the process of wearing a training device with a three-layer structure.

[0068] Figure 12 This is an explanatory diagram illustrating the process of wearing a training device with a double-layered structure.

[0069] Figure 13 This is an explanatory diagram showing the relationship between load measurements, elongation, and fastening force obtained from a tensile force cyclic test using an elastic foam.

[0070] Figure 14 This is an illustrative diagram showing the pose classification based on the method of Kendall et al.

[0071] Figure 15 It is an explanatory diagram showing the inhalation state of thoracic breathing, abdominal breathing, and swimming breathing.

[0072] Figure 16 It is an explanatory diagram showing the exhalation state of thoracic breathing, abdominal breathing, and swimming breathing. Detailed Implementation

[0073] The training method and training apparatus for the present invention will now be described using the accompanying drawings. Furthermore, the following description is merely illustrative and the scope of the present invention is not limited thereto.

[0074] As described in Non-Patent Document 3, the trainee 1 cannot expect any effect from stretching. Therefore, the applicant analyzed the trainee 1's actions and psychology in the water to enable the trainee 1 to fully understand and be aware of the stretching movements they were performing.

[0075] In this invention, regarding the action of a trainee 1, who is a beginner swimmer, consciously contracting the transverse abdominis 7 and other lateral abdominal muscles to cause the abdomen 2 to concave (hereinafter referred to as extension), the transverse abdominis 7 and other lateral abdominal muscles act as a waist-binding mechanism to tighten the digestive organs 9 such as the stomach, small intestine, and large intestine. By contracting these lateral abdominal muscles, the digestive organs 9 can be moved towards the head, and the center of gravity can also be moved towards the head. Furthermore, during the extension action, by causing the abdomen to concave, the diaphragm 10 rises towards the head. In this state, when air is inhaled into the lungs while consciously expanding the lower rib cage to the left and right, the lower rib cage expands to the left and right, and air accumulates on the lower side (pelvic side) of the lungs 8. This allows the position of the center of buoyancy to move towards the feet, thus bringing the body's center of gravity closer to the center of buoyancy, making it easier to float horizontally in the water.

[0076] For swimmers who don't spend long periods of time training in the water, such as competitive swimmers, it's difficult to master breathing techniques that maintain a continuous extended position. This is because, on land, breathing while maintaining a continuous extended position is unnatural. However, in swimming, a sport performed in water, breathing with a higher air content in the lungs provides greater buoyancy, making it highly advantageous and therefore preferred.

[0077] The differences between ordinary breathing on land and swimming-style breathing in water are explained.

[0078] Breathing is not accomplished by the expansion or contraction of the lungs themselves, but rather by the activity of the surrounding muscles. Representative muscles include the external intercostal muscles and the diaphragm, with thoracic and abdominal breathing occurring in tandem.

[0079] In normal breathing on land, when inhaling air, the external intercostal muscles contract, the thoracic cavity expands, and the diaphragm contracts and moves laterally towards the pelvis, thus inhaling air (inhalation). When exhaling air, the external intercostal muscles relax, the thoracic cavity narrows, and the diaphragm relaxes and moves laterally towards the head, thus expelling air (exhalation).

[0080] In contrast, during swimming-style breathing in water, the diaphragm 10 extends and moves towards the head, while the external intercostal muscles contract, expanding the thoracic cavity. This prevents the diaphragm 10 from contracting and moving towards the pelvis 3, thus inhaling air (inhalation). The external intercostal muscles relax, narrowing the thoracic cavity. This prevents the diaphragm 10 from relaxing and moving towards the head, thus exhaling air (exhalation). The lungs 8 retain a relatively large amount of air, resulting in respiration with greater buoyancy.

[0081] Among swimming beginners, young children or elementary school students often lack the understanding of the difference between chest breathing and abdominal breathing. In this case, they believe that in a natural, quiet state, they mostly engage in a combination of chest and abdominal breathing. When instructing children on stretching, if they are made to consciously focus on breathing techniques, they will unconsciously cause their abdomen to contract, making it easy for their stretching posture to change. Therefore, in children's cases, it is important to teach them swimming breathing through repeated practice, enabling them to unconsciously reproduce the stretching posture naturally. This is not limited to children; the same applies to adults.

[0082] Through repeated stretching exercises, the diaphragm 10 rises towards the head, and the basal muscles of the pelvis 3 also rise towards the head, thus stabilizing the pelvis 3. When air is inhaled into the entire lung 8 in this state, the lower thoracic cavity expands to the left and right, and air accumulates on the lower side of the lung 8 (the side of the pelvis 3), causing the center of buoyancy to shift slightly towards the feet. Furthermore, through the buoyancy of the training device 6, the center of buoyancy approaches the center of gravity almost infinitely.

[0083] Regarding the length of the abdomen circumference 2 centered on the navel of trainee 1, a total of 10 children and primary school students in the swimming classroom were measured, and the results are shown in Table 1.

[0084] Table 1 shows the differences in abdominal circumference 2 between age, gender, height, and the length of the abdomen in a natural standing position in daily life and the length after stretching.

[0085] Table 1

[0086]

[0087] In this invention, for swimming beginners, firstly, the beginners stretch themselves and are aware of maintaining this stretch, making it important for the body to fully realize how to stretch. Then, to eliminate any possibility of the thought of drowning, a long, narrow training device 6 made of buoyant, elastic foam is worn on the body. This device acts as a second transverse abdominis muscle and a second waist support, allowing the body to feel the movement. By utilizing the buoyancy of the training device 6, the center of gravity is brought closer to the center of buoyancy, thereby eliminating the fear of drowning.

[0088] Therefore, even if a swimming beginner is not consciously contracting the transverse abdominis 7 and other lateral abdominal muscles, the contractile force of the training tool 6 can tighten the area around the abdomen 2, thereby applying buoyancy to the swimming beginner's body while maintaining an extended state. Therefore, there is no need to worry about drowning, and one can breathe slowly and calmly in the water, thus resolving the aforementioned contradiction.

[0089] As for the training equipment used in the training method of the present invention, as long as it is a long strip-shaped training equipment made of an elastic foam having buoyancy, elasticity and softness, the raw material can be any raw material such as natural rubber or synthetic rubber. However, as an elastic foam, it is preferable to use a raw material for so-called diving suits that contains air in chloroprene rubber.

[0090] In the case of swimming training as part of the training for this invention, firstly, as a first step, on land, such as... Figure 1 As shown, the swimming beginner, as trainee 1, contracts the transverse abdominis muscle 7 and other muscles according to their own will, thereby causing the area around the abdomen 2 to concave and stretch.

[0091] Next, as the second step, while maintaining this extended state, while stretching the long strip of training equipment 6 made of elastic foam with both hands, the part of the swimsuit 4 above the pelvis 3 around the abdomen 2 centered on the navel and below the 10th rib 5 is wrapped around the abdomen 2 with the spine on the back as the center and securely fastened to the body.

[0092] As the third step, while maintaining an extended position, various exercises are performed while wearing the training equipment 6 covering the area around the abdomen 2.

[0093] Figure 1 (A) is a schematic diagram viewed from the front of trainee 1. Figure 1 (B) is a schematic diagram viewed from the side of trainee 1. Figure 1 (C) is a photo of trainee 1 viewed from the front. Figure 1 (D) is a photograph taken when the trainee 1 stretches their abdomen while making the area around their abdomen concave, with the training equipment 6 placed around their abdomen 2. Figure 1 As shown in (D), the features of the present invention and the training method using the training device 6 of the present invention are as follows: Step S1, contracting the transverse abdominis muscle 7 and other muscles to cause the abdominal periphery 2 to be concave and in an extended state; Step S2, while maintaining the extended state of the abdominal periphery 2, wearing the elongated training device 6, which is made of an elastic foam having buoyancy, elasticity and softness, in a way that stretches and tightens to cover the portion from the upper part of the pelvis 3 to the lower part of the 10th rib 5; and Step S3, training is performed while maintaining the extended state using the contractile force of the training device 6.

[0094] Therefore, as a training tool 6, it is preferable that when the stretching training tool 6 is wrapped around the abdomen 2 of the trainee 1, the tightening force of the training tool 6 that wants to contract has the following contraction force: even if the trainee 1 does not stretch as he wishes, the stretched training tool 6 will contract so that the length of the abdomen 2 becomes approximately the same as the length of the stretched state.

[0095] As a specific standard for this contractile force, it is preferable to have a contractile force that makes the length of the abdominal circumference 2 of the trainee 1, which is indented due to the contractile force of the training device 6, 3% to 20% shorter than the length of the abdominal circumference 2 in the resting state.

[0096] By having the trainee 1 contract the transverse abdominis 7 and other lateral abdominal muscles according to their own will, the abdominal area 2 is stretched. The trainee 1 can be aware of the stretch not only through the head but also through the whole body. Furthermore, by firmly securing the abdominal area 2 with the training device 6, the abdominal area 2 is kept stretched. Even if the trainee 1 forgets to stretch or their awareness weakens, the contractile force of the training device 6 maintains the stretched state and applies buoyancy to the trainee 1, thus preventing the body from sinking.

[0097] Trainee 1 stretches the area around the abdomen 2 according to their own will, and then wears training equipment 6 to maintain this stretched state. The digestive organs 9 inside the trainee 1's body, located inside the training equipment 6, move towards the head.

[0098] Next, use Figure 2 Explain the movements of trainee 1 in the water. Figure 2 (A) shows trainee 1 performing a "prone floating" exercise while in a decompression state, with part of lung 8 floating through the air in lung 8, the center of buoyancy located in part of lung 8, while the head, arms, and legs sink. The center of gravity is located near pelvis 3.

[0099] However, most beginner swimmers, due to the fear of drowning, exert force and stiffen their bodies, making it impossible to achieve the relaxed, prone floating state. For beginner swimmers, the initial step is to work on achieving the feeling of the lungs partially floating in this relaxed state.

[0100] In actual experience Figure 2 After the prone floating state of (A), the state of extending the arms and legs is as follows: Figure 2 The posture is (B). When assuming this posture, the center of gravity shifts towards the head. When stretching from this posture, the pelvis (3) tilts backward, and the digestive organs (9) move forward, thus shifting the center of gravity slightly towards the head. This posture is... Figure 2 The initial state of the streamlined swimming method of (C).

[0101] However, for a swimming beginner 1, the fear of drowning due to the inability to breathe underwater can cause the body to stiffen, leading to excessive force that disrupts balance, unnecessary struggling, pain, and exhaustion, ultimately resulting in drowning. Therefore, for trainee 1 who is a swimming beginner, the following breathing exercises are necessary: ​​Wear the training equipment 6 around the abdomen 2. When inhaling air into the entire lungs 8 while in an extended state, the lower ribcage expands to the left and right, accumulating air in the lower part of the lungs 8 (on the side of the pelvis 3). Figures 3-7 The movement state of trainee 1 in a streamlined posture in the water is described.

[0102] Figure 3 (A) shows the state of the trainee 1 wearing training equipment 6 and stretching out so that the mouth or nose is exposed above the water and inhaling, then stretching out the arms and legs in the water to submerge the mouth or nose and holding the breath, and the lungs and digestive organs 9. Figure 3 (B) shows the state of the lungs and digestive organs 9 when the limbs are extended and stretched in the water and the patient is exhaling through the mouth. Both are in an extended position, so the pelvis 3 is tilted backward, and parts of the head, lungs, and waist are exposed above the water surface WL, but... Figure 3 (A) After exposing the mouth or nose above the water and inhaling, the mouth or nose is submerged and the breath is held. The lungs (8) expand, and using the air and buoyancy of the training equipment (6), the entire body floats. The difference d1 between the water surface (WL) and the tangent to the surface near the 10th rib (5) of the chest (indicated by the dashed line) is... Figure 3 (B) During exhalation in the water, the difference between the water surface WL and position WD is short, causing the body to float. The training device 6 causes the abdomen to concave, and correspondingly, the ventral surface is positioned closer to the center of the body than WD. The digestive organs 9 are located in... Figure 3 In (B), the body moves further towards the head. In this state, as long as the arms and legs can move slowly, it is possible to move forward in a streamlined swimming motion.

[0103] Figure 4 (A) shows the state of the lungs (8) and digestive organs (9) after inhalation and breath-holding in a state where trainee 1 is wearing training equipment (6) and not stretching in water. Figure 4 (B) shows the state of the lungs 8 and digestive organs 9 during exhalation. Both parties use training equipment 6 to tightly wrap around their abdomen 2, but... Figure 3 Compared to the pelvis 3 during stretching, Figure 4 When the pelvis is stretched, the pelvis 3 tilts further forward. The length of the abdomen circumference 2 increases to the extent that it is not stretched, expands slightly during inhalation using the action of the diaphragm 10, and shrinks during exhalation compared to the shape during inhalation.

[0104] Parts of the head, lungs, and waist each protrude from the water surface, but... Figure 4 In the state following inhalation (A), the lungs 8 expand to the extent of inhaled air. Utilizing this air and the buoyancy of the training device 6, the entire body floats. The difference d1 between the water surface WL and the position of the tangent WD (shown by the dashed line near the surface of the 10th rib 5 of the lungs 8) is... Figure 4 In the exhaled state (B), the difference d2 between the water surface WL and position WD is short, causing the body to float. In both cases, the trainee 1 does not stretch, therefore the abdominal periphery 2 expands, and correspondingly, the training apparatus 6 expands due to its flexibility. The abdominal periphery 2 of the ventral surface of the training apparatus 6 expands to a position close to or beyond the tangent of the surface near the 10th rib 5 of the chest (indicated by the dashed line). Figure 4 In (B), the digestive organ 9 moves toward the head to the same extent that the volume of the lung 8 is reduced.

[0105] Trainee 1 wears training equipment 6, and as follows: Figure 3 , Figure 4As shown, whether stretched or not, it is easy to bring your mouth or nose above the water to inhale and to submerge your mouth or nose to exhale. If breathing is difficult, you may panic and try to inhale, causing water to be drawn into your lungs through your mouth or nose. If there is no fear of drowning or aversion to water, proceed to the next step.

[0106] In other words, stop using the contraction force of the training device 6 to stretch the abdominal area 2, and gradually loosen the tightness. Try to see if the trainee 1 can contract the transverse abdominis muscle 7 and other muscles according to their own will in the loosened state, so as to maintain the stretched state. If this can be achieved, further relax. If not, repeatedly tighten and repeat breathing training in the water, so as to understand the relationship between the tightness of the training device 6, the stretched state, and the degree of buoyancy of the body in the water, so as to be able to fully respond with the body.

[0107] Figure 5 (A) shows the state of the lungs 8 and digestive organs 9 of the trainee 1 when holding their breath after being inhaled while the trainee 1 is able to breathe fully in water even when the trainee 1 is loosely wearing the training equipment 6 and has extended their body in the water with their mouth or nose above the water surface. Figure 5 (B) shows the state of the lungs 8 and digestive organs 9 when exhaling through the mouth in water. In both cases, the abdomen 2 is not tightly wrapped by the training device 6, so no buoyancy is applied to the trainee 1 from the training device 6, and accordingly, the trainee 1's body sinks in the water relative to the water surface WL. The buoyancy is determined by the amount of air inhaled into the lungs 8.

[0108] Regarding pelvis 3, and Figure 3 Compared to the posterior pelvic tilt posture with the pelvis extended, the pelvis 3 becomes slightly anteriorly tilted, but still maintains a posterior tilt posture, and the abdominal circumference 2 becomes slightly thicker than the size of the abdominal circumference 2 when wearing the training device 6 without extension. Without the training device 6, such as Figure 5 As shown, trainee 1 contracts the transverse abdominis muscle 7 into an extended state according to their own will, as long as they can fully inhale. Figure 5 The state of (A) and exhalation Figure 5 If the trainee 1 is in state (B), then the trainee 1 can learn to stretch without training equipment 6, which can be said to have overcome the fear of drowning in the water due to the lack of training equipment 6.

[0109] Figure 6 This shows trainee 1 breathing underwater without stretching, in the absence of training equipment 6. (Compared to...) Figure 5Compared to stretching without training equipment 6, the abdomen 2 protrudes downwards from the dotted line of WD in the water, causing the body to sink further. During inhalation, the lungs 8 expand, providing buoyancy to the body, but with exhalation, the lungs 8 collapse, and the digestive organs 9 descend downwards.

[0110] Figure 7 This graph compares the differences in buoyancy and sinking in the water during swimming training, in which alternating and repeated movements are performed. Figure 3 (A) The state of stretching while wearing training equipment 6, and the state of stretching while loosening the wearing of training equipment 6. Figure 5 (A) is the state of stretching without wearing the training equipment 6. In either case, the body is in a stretched state, but it is known that when the training equipment 6 is worn, the buoyancy of the training equipment 6 is applied to the body, making it easier to float.

[0111] According to this Figure 7 By experiencing the differences between the state of firmly wrapping and securing the training device 6 around the abdomen 2, the state of loosening the tightness of the training device 6 around the abdomen 2, and the state of removing the training device 6 from the abdomen 2, one can feel the difference between the feeling of buoyancy when concentrating one's mind to contract the transverse abdominis muscle 7, which acts as a waist trainer, causing the abdomen to concave and become stretched, and the feeling of buoyancy when wearing the training device 6 around the abdomen 2, so that the training device 6 acts as a second waist trainer, cooperating with the transverse abdominis muscle 7 to concave the abdomen 2, thus creating a stretched state. This difference can also be understood through the mind.

[0112] In addition, by experiencing the stretching state, the non-stretching state, and the inhalation and exhalation in various situations, one can physically remember how to float in water, how to maintain balance in water, and how to move one's hands and feet in water. Furthermore, one can understand this mentally and reliably remember it through repeated training.

[0113] Therefore, there is no room for the fear of drowning to arise in the mind, and one can freely contract and extend the transverse abdominis and other lateral abdominal muscles according to one's own will, and can extend and push off the wall to glide, so that the center of buoyancy is close to the center of gravity and thus floats. In this way, one can slowly and calmly train the streamlined swimming method and thus be able to swim with confidence.

[0114] Even if trainee 1 gets tired during training and loses concentration to stretch, the training device 6 still tightens the area around the abdomen 2, so the following synergistic effect can be expected: while maintaining the stretch, the body feels the tactile sensation of the training device 6 tightening the area around the abdomen 2, thus reminding the trainee to stretch again, concentrating the mind and causing the transverse abdominis muscle 7 to contract.

[0115] Furthermore, the training device 6 covers the abdomen 2 centered on the navel from the upper part of the pelvis 3, strongly tightening the abdomen 2 until it reaches a stretched state. Therefore, it also has a waist-cinching effect to correct the poor posture of many children and students, as described in Non-Patent Literature 1. Thus, it not only helps improve swimming but also helps correct posture. This effect is not only for children and students but can also be said to be effective for adults.

[0116] 【Example】

[0117] Figure 8 The diagram illustrates, as an example, the training location and the steps of each training exercise using the invention, and is a flowchart explaining the relationship between the training location and the presence or absence of training equipment, stretching, inhalation, and exhalation.

[0118] Figure 8 (A) illustrates a training session conducted on land, such as at a poolside, classroom, or home. Starting from START, the following steps are performed: Step S1, the trainee 1 contracts the transverse abdominis muscle 7, causing the abdominal area 2 to concave; Step S2, a long, strip-shaped training device 6, made of elastic foam with buoyancy, elasticity, and softness, is stretched and tightened to cover the area from the upper part of the pelvis 3 to the lower part of the 10th rib 5, which is the concave abdominal area 2 of the trainee 1; and Step S3, training is performed while maintaining the concave state of the abdominal area 2 using the contractile force of the training device 6.

[0119] The order of steps 1 and 2 can also be reversed. In short, before proceeding to step 3, the trainee 1 should contract the transverse abdominis 7 and other lateral abdominal muscles according to their own will, causing the abdominal area 2, roughly centered on the navel, to concave. While stretching the training device 6, tighten it and secure it to the concave abdominal area 2 with Velcro fasteners. Next, perform breathing exercises in the stretched state. Continue inhaling step S3-1 and exhaling through the nose step S3-2 for the required number of repetitions. This order can also be reversed. End after the required number of repetitions, marking it as END.

[0120] By this Figure 8 The training consisting of the stretching steps (A), the steps of wrapping and securing the training equipment 6 around the abdomen 2, and the breathing exercises performed while maintaining the stretching state, can be carried out on land. It is a basic training that can be practiced anytime in a small space, without being restricted by time or place. Therefore, unlike swimming training in the past, which was only conducted during the time when a swimming pool was available, it can solve the problem of insufficient absolute time for basic stretching or breathing exercises.

[0121] exist Figure 8After (A) completes basic land-based training, proceed with... Figure 8 (B) Breathing exercises during stretching S5-1 and S5-2. Starting from START, the trainee 1 contracts the transverse abdominis muscle 7, causing the abdomen around 2 to concave, in step S1. Then, the trainee wears a long, elastic training device 6, made of buoyancy, elasticity, and softness, wrapped tightly while stretching, covering the area from the upper part of the pelvis 3 to below the 10th rib 5 around the trainee 1's concave abdomen 2. Figure 8 (A) is the same.

[0122] Figure 8 (B) and Figure 8 The difference in (A) is that, in a home or bathhouse, the trainee 1 enters a bathtub filled with water or hot water (step S4-1), while enduring water pressure in the bathtub, re-secures the training equipment 6 in the water (step S4-2), and then breathes while enduring water pressure in the bathtub in an extended position. Step S5-1, inhaling with the face above the water, and step S5-2 (S5-3), exhaling through the nose in the water, are performed for the required number of times. This order can also be reversed. The exercise ends after performing the required number of steps S5-3, designated as END.

[0123] This training can also be practiced at home at any time, thus addressing the problem of insufficient time for basic stretching or breathing exercises, unlike existing swimming lessons which only involve swimming during periods when a pool is available.

[0124] Figure 8 (C) and Figure 8 (A) or Figure 8 The difference with (B) is that the pool is used as a school swimming course or for swimming training at a swimming school, and training is conducted up to the streamlined swimming style.

[0125] Trainee 1 performs the following steps: entering the swimming pool (S6-1), re-secures training equipment 6 underwater while enduring water pressure (S6-2), and then breathes while in a stretched-out position while enduring water pressure in a bathtub. The trainee continues to perform the following steps repeatedly: inhaling with the face above water (S7-1), exhaling through the nose underwater (S7-2), and practicing streamlined swimming techniques (S7-3, S7-4). This order can be reversed. The session ends after performing the required number of repetitions of step S7-4, marked as END.

[0126] After performing the required number of repetitions of step S7-4, and having fully mastered the training by wearing the training equipment 6 around the abdomen 2, thus gaining confidence, proceed to the next step S8. This can be performed on land or in the water, but in step 8, after relaxing the layers of the training equipment 6 in any location, as a breathing exercise in an extended position, perform the extended inhalation step S9-1, raising your face above the water, followed by the extended exhalation step S9-2, while exhaling through your nose underwater, and then the streamlined S9-3, slowly extending your arms and legs in an extended position. Continue performing these steps (S9-4) for the required number of repetitions. This order can also be reversed. After performing the required number of repetitions of step S9-4, end the exercise and mark it as END.

[0127] After performing the required number of repetitions of step S9-4, and gaining confidence by fully mastering the training of loosely wearing the training equipment 6 around the abdomen 2, proceed to the next step S10. In step 10, initially, the training equipment 6 is not worn around the abdomen 2, so the body sinks into the water accordingly. However, by releasing the body's tension in an extended state after inhalation, and submerging the face in a relaxed state, one can float fully by the air entering the lungs 8. As a breathing exercise in this relaxed state, perform an extended inhalation step S11-1 with the face above the water surface, followed by an extended exhalation step S11-2 while exhaling through the nose underwater, and then a streamlined exhalation step S11-3 while slowly extending the arms and legs in an extended state. Continue performing these steps (S11-4) for the required number of repetitions. Alternatively, this order can be changed appropriately. After performing the required number of repetitions of step S11-4, the exercise ends, marked as END.

[0128] Should Figure 8 The training of (C) is carried out in stages and in full. Figure 8 (A) training, Figure 8 The training (B) is conducted after boosting confidence. Therefore, unlike swimming without suddenly wearing the training equipment 6 around the abdomen 2, one can train with confidence and composure, thus preventing the danger of panicking and drowning in the water. Moreover, even if one feels slightly uneasy, one can immediately return to the previous step of loosening and wearing the training equipment 6 or the previous two steps of securely wrapping and wearing the training equipment 6 around the abdomen 2, allowing the trainee 1 to continue training with peace of mind.

[0129] in addition, Figure 8The training steps in (C) can be implemented in a concentrated manner for content that can only be performed in a swimming pool. Therefore, unlike the swimming training methods in existing swimming courses that teach and instruct all training items at once during the time when the swimming pool is available, sufficient time can be spent carefully instructing prone floating or streamlined swimming techniques in an extended position.

[0130] Therefore, even when swimming lessons are difficult to conduct due to the abandonment of school pools, public or private pools can be used for lessons that can only be conducted in a pool. Figure 8 Training (C) can solve the problem of not being able to conduct swimming lessons without a pool.

[0131] Regarding the training apparatus 6 used in the training method of the present invention, as long as it is a long strip-shaped training apparatus 6 made of an elastic foam having buoyancy, elasticity, and softness, it can be any raw material such as natural rubber or synthetic rubber, as mentioned above. However, as an elastic foam, it is preferable to use a raw material for so-called diving suits that contains air in chloroprene rubber.

[0132] Specifically, as a candidate, a rubber raw material with a thickness of 2.0 mm to 8.0 mm composed of independent air bubbles is proposed. This raw material has the buoyancy required to achieve the purpose of this invention, as well as softness and elasticity. Therefore, it is very economical to simply cut the fabric into an external shape with a length of 300 mm to 1500 mm and a width of 50 mm to 400 mm, and sew fasteners at both ends so that the two ends overlap and can be locked around the trainee's abdomen. The tightening force can be adjusted according to the progress of training.

[0133] As described in Non-Patent Document 3, it is not easy for a beginner swimmer to indent the area around their abdomen 2 and achieve an extended state. Therefore, even if a beginner swimmer achieves an extended state by using training equipment, it is not easy for the trainee to apply force to their arms in the direction of tightening the area around their abdomen 2 with the training equipment 6.

[0134] Therefore, the preferred construction for the training device 6, which exerts the most appropriate clamping force, is... Figure 9 (A) to Figure 9The structure shown in (D) is as follows. When worn on the body of the trainee 1, the training device 6 has fewer bumps on its outer surface in the extended state, forming a smooth, streamlined contour that outlines the shape of the body. The training device 6 can be worn at a position indented on the dotted line tangent to the ribs (sternum) of the trainee 1, thereby securing the abdominal periphery 2 from the upper part of the pelvis 3 (ilium) to the lower part of the ribs, namely the lower side of the 10th rib 5, so that the digestive organs 9 are lifted upwards.

[0135] In order to reduce the length of the trainee's abdomen circumference 2 by 3% to 20% compared to the length of the trainee's abdomen circumference 2 when not wearing the training equipment 6, so that the trainee can wear the training equipment 6 tightly around their abdomen circumference 2 by themselves, the training equipment 6 is formed having: multiple layers, which are long strips and have buoyancy, elasticity and softness to secure the abdomen circumference; and face hooks, which are provided corresponding to the surfaces of each layer. When the training equipment 6 is tightly wrapped around the body, the number of layers on the abdominal side is greater than the number of layers on the back side. The layers are alternately overlapped from opposite directions and fixed by the face hooks, so that the contraction force of the layers cooperates to make the trainee's abdomen circumference concave.

[0136] More specifically, such as Figure 9 As shown in (A), a strip of rubber material, consisting of an elastic foam with buoyancy, elasticity, and softness, and conforming to the contours of the body, is formed in a three-layer structure: layer 11, layer 22, and layer 33. To secure each layer after fastening around the abdomen 2, a combination of concave and convex fasteners is used. Regarding the concave and convex aspects of the fasteners, either concave or convex is acceptable. In this embodiment, a pair is shown, but they can be interchanged to become the opposite.

[0137] Because of the tightening of layers 11, 22, and 33, trainee 1 can firmly tighten the area around the abdomen 2 alone, thus maintaining the stretched state. Therefore, a non-elastic band 14 is set at the center of the other end of layer 11, with buckle 15 as the fulcrum. Using the principle of pulleys, the band 14 and buckle 15 are reversed so that the direction of winding and tightening in layer 11 is opposite to the direction of winding and tightening in layer 22, so that the stretching force of the right hand and the left hand acts in the same direction.

[0138] That is, by stretching the second layer 12 with only one hand, the movement and stretching force are transmitted to the first layer 11 via the belt 14, and the first layer 11 is also stretched. Therefore, the stretching direction of the first layer 11 is opposite to the stretching direction of the second layer 12. Even when stretching in a direction different from the direction in which the force of the arm is easily applied due to the different dominant arm of the trainee 1, the pulley principle can be used to achieve sufficient fastening with less force.

[0139] Furthermore, to prevent breakage when localized forces from the band 14 are applied to the connection points of the first layer 11 during stretching of the non-stretchable band 14, the root of the band 14 is reinforced by a reinforcing portion 14a with an extended end shape, and installed in a manner that distributes the force along the width direction of the first layer 11. Even when the non-stretchable band 14 is stretched, the force is applied evenly across the width of the stretchable first layer 11, preventing breakage. This also prevents the trainee from experiencing the pain caused by the tension force generated by the reaction of the training tool 6 when stretching and wrapping the layers around the abdomen, which would directly become a localized constricting force caused by the band 14 digging into the abdominal area 2. The soft inner surface of the first layer 11 can act as a cushion while gently securing itself to the abdominal area 2. That is, the securing force from line contact would cause intense pain to the trainee, but the securing force from surface contact is a stable pressing force that does not cause pain.

[0140] When using training equipment 6, as described below, according to Figure 11 (A) to Figure 11 The order of (H) will Figure 9 The three-layered training device 6 is wrapped around and secured to the abdomen 2 of the trainee 1, ultimately to maintain... Figure 11 The (H) is stretched in a way that the training tool 6 is tightly wrapped around the abdomen 2. When the training tool 6 is stretched and wrapped around the abdomen 2, the lateral length of the abdomen 2 is tightened in a way that it goes from W1 through W2 to W3, and the depth width is tightened in a way that it goes from D1 through D2 to D3.

[0141] First, such as Figure 11 As shown in (A), a cross-section of the abdomen around the navel 2 of trainee 1 is displayed. The transverse abdominis muscle 7 extends from both sides of the waist to protect the digestive organs 9. When trainee 1 tightens the transverse abdominis muscle 7 at his own will, the abdomen around the navel 2 concaves out, thus becoming stretched.

[0142] While maintaining this extended position, grasp the portion of the strap 14 near the first layer 11 of the training device 6 with your left hand, and grasp the end of the second layer 12 with your right hand. Position the spinal marker 20 so that it aligns with the spine on your back. Using the tactile sensation of the spinal marker 20 against the spine, confirm the left and right positions while bringing the spinal marker 20 into contact with the spine, thus achieving the desired position. Figure 11 The state of (B).

[0143] Next, while holding the buckle 15 installed on the second layer 12 with your right hand, use your left hand to pass the strap 14 through the buckle 15, thus forming... Figure 11 The state of (C).

[0144] The hook-and-loop fastener (recessed) 24 sewn onto the inner side of the strap 14 passing through the buckle 15 overlaps with the hook-and-loop fastener (convex) 22 sewn onto the inner side of the second layer 12, and the two are engaged to secure them. Grasp the handle 17 located on the surface of the second layer 12 and apply a force in the direction of the arrow to the left to stretch it. Hold the handle 18 of the first layer 11 with your left hand and apply a force close to the direction of the arrow near the buckle 15 to stretch it, thus becoming... Figure 11 The state of (D).

[0145] When the end of the second layer 12 is stretched forcefully in the direction of the arrow with the right hand, the strap 14 extends straight. Using the buckle 15 as a fulcrum and the principle of a pulley, a greater force can be applied to stretch the first layer 11 than when stretched directly by hand, thus elongating it. At the same time, the strap 14 sewn into the first layer 11 is also stretched forcefully, thus becoming an immediately straight extension. Figure 11 The state of (E).

[0146] While the abdomen is strongly secured by the overall contractile force of the first layer 11, the outer surface fastener (concave) 16 of the first layer 11 engages with the inner surface fastener (convex) 22 of the second layer 12, and the first layer 11 covers the area around the abdomen 2. By stretching the second layer 12, the first layer 11 is further stretched using the pulley principle of the belt 14, thus becoming as... Figure 11 As shown in (F), remove the left hand from layer 11. At this time, the area around the abdomen 2 is securely wrapped in a stretched state in layers 11 and 22.

[0147] To further consolidate the force used by layer 11 and layer 22 to tighten the area around the abdomen, such as... Figure 11 As shown in (G), grasp the end of the third layer 13 with both your right and left hands and apply force in a clockwise direction to tighten it more firmly.

[0148] From Figure 11 (A) to Figure 11During the (G) process, the three layers 11, 22 and 33 are used to tighten the front side of the abdomen 2 of trainee 1. After covering the 11 with the 2nd layer 12, the handle 17 at the end of the 2nd layer 12 is pulled by hand, and the outer surface hook-and-loop fastener 21 (concave) of the 2nd layer 12 is engaged with the inner surface hook-and-loop fastener 23 (convex) of the 3rd layer 13, so that the 3rd layer 13 covers the whole and fixes it.

[0149] In this way, the training equipment 6 flexibly utilizes the force of the non-stretchable strap 14 and buckle 15, and uses the cooperative contractile force of the three stretched layers 11, 22, and 33 to firmly fasten it to the upper part of the swimsuit above the pelvis 3 of the trainee 1 in an extended state, thereby correcting and maintaining the posture of the pelvis 3 to an appropriate posture, such as... Figure 11 As shown in (H), the front side of the abdomen 2 is pulled from different directions, so that even if the trainee 1 moves vigorously in the water, the training equipment 6 will not fall off the abdomen 2, but will firmly pull the front side of the abdomen 2, thereby maintaining the extended state.

[0150] This creates a three-layer structure on the ventral side of the training device 6, consisting of a first layer 11, a second layer 12, and a third layer 13. When the trainee 1 wears the training device 6, the buoyancy of the ventral surface is greater than that of the back surface. Therefore, compared to a training device with the same total buoyancy in a prone floating position and a similar structure on both the ventral and back sides, the buoyancy of the ventral side is greater when submerged in water, thus pushing the body upwards from the ventral side. This tactile sensation also provides a greater sense of security.

[0151] In addition, by making the abdominal side of the training device a three-layer structure, compared with the training device 6, which has the same tension force on the abdominal side as the total tension force of the training device 6 and the abdominal side and the back side have the same structure, the tension force on the abdominal side is greater than that on the back side. Therefore, the tension force required for stretching can be obtained while wearing it comfortably.

[0152] In addition, as long as the buoyancy of the ventral surface is greater than that of the back surface when the training equipment 6 is worn, the three-layer structure is not required. The same effect can be achieved even if the three-layer structure is not equipped with 14, or if the structure is double-layered and the structure is double-layered without 14.

[0153] To confirm the tightness of the training apparatus 6, a first gauge 25 is installed on the outer side of the first layer 11, a second gauge 26 is installed on the outer side of the second layer 12, a first arrow 27 is installed at the front end of the outer side of the second layer 12, and a second arrow 28 is installed at the front end of the outer side of the third layer 13. The tightness of the training apparatus 6 can be confirmed by observing the positions of the first gauge 25 and the second gauge 26 pointed to by the first arrow 27 and the second arrow 28.

[0154] That is, by observing the position of each arrow on each ruler, one can determine the degree of tightness of the training equipment 6 during each training session, whether the training equipment 6 is tightly wrapped around and secured to the abdomen 2, whether the tightness of the training equipment 6 around the abdomen 2 is loosened, and whether the training equipment 6 is removed from the abdomen 2, thereby determining the proficiency of the training.

[0155] Furthermore, in this invention, as shown in the above embodiments, the training apparatus 6 is not limited to a three-layer structure consisting of a first layer 11, a second layer 12, and a third layer 13; it may also be a structure omitting the third layer 13, as shown in the embodiments described above. Figure 10 The training apparatus 6, as shown in (A) to (C), is a double-layered structure consisting of a first layer 11 and a second layer 12. In this double-layered training apparatus 6, regarding the aforementioned... Figure 9 The three-layer structure shown has the same constituent elements and components, and is labeled with the same numbers, so the descriptions are omitted in the following description.

[0156] like Figure 10 As shown in (A) and (B), the training device 6 with a double-layer structure is formed as follows: a non-elastic belt 14 is set in the center of the width direction at the other end of the first layer 11, and the belt buckle 15 serves as the fulcrum. The belt 14 and the belt buckle 15 work by utilizing the principle of pulleys.

[0157] That is, by stretching the second layer 12 with only one hand, the stretching force is transmitted to the first layer 11 via the belt 14 through the action, and the first layer 11 is also stretched. Therefore, the stretching direction of the first layer 11 is opposite to the stretching direction of the second layer 12. Even when stretching in a direction different from the direction in which the force of the arm is easily applied due to the different dominant arm of the trainee 1, the principle of the pulley can be used to achieve sufficient fastening with less force.

[0158] When using training equipment 6, which consists of a double-layered structure of layer 11 and layer 22, similarly to training equipment 6 with a three-layered structure, while the trainee 1 maintains their own extended body position, as... Figure 12As shown in (B), hold the portion of the strap 14 near the end of the first layer 11 attached to the training device 6 with your left hand, and hold the end of the second layer 12 with your right hand. Position the spinal marker 20 so that it aligns with the spine on your back. Using the tactile sensation of the spinal marker 20 against the spine, confirm the left and right positions while bringing the spinal marker 20 into contact with the spine, thus achieving [the desired position]. Figure 12 The state of (B).

[0159] like Figure 12 As shown in (C), the hook and loop fastener (recessed) 24 sewn to the end of the strap 14 that passes through the buckle 15 overlaps with the hook and loop fastener (convex) 22 sewn to the inside of the second layer 12, and the two are engaged and fixed.

[0160] Grasp the handle 17 on the surface of the second layer 12 that can hook your fingers and apply force to the left in the direction of the arrow to stretch it. Grasp the handle 18 on the surface of the first layer 11 that can hook your fingers and apply force close to the direction of the arrow on the buckle 15 to stretch it, thus becoming Figure 12 The state of (D).

[0161] When the end of the second layer 12 is pulled forcefully in the direction of the arrow with the right hand, the initial strap 14 initially extends straight. Using the buckle 15 as a fulcrum and the principle of a pulley, a greater force can be applied to the first layer 11 than when stretched directly by hand, thus elongating it. At the same time, the strap 14 sewn to the first layer 11 is also stretched forcefully, thus becoming an immediately straight extension. Figure 12 The state of (E).

[0162] While the abdomen is strongly secured by the overall contractile force of the first layer 11, the outer surface fastener (concave) 16 of the first layer 11 engages with the inner surface fastener (convex) 22 of the second layer 12, and the first layer 11 covers the area around the abdomen 2. By stretching the second layer 12, the belt 14, using the principle of pulleys, further stretches the first layer 11, enabling it to... Figure 12 As shown in (F), remove your left hand from layer 11. At this point, around the abdomen 2, securely wrap the trainee's abdomen in a stretched position, with layer 11 and layer 2 working together.

[0163] To further consolidate the force used by layer 11 and layer 22 to tighten the area around the abdomen, such as... Figure 12 As shown in (G), grasp the end of the second layer 12 with both your right and left hands and apply force in the counterclockwise direction of the arrow, thereby tightening it more firmly.

[0164] In short, training equipment 6 can be a double-layered structure, a triple-layered structure, or any number of layers. The training equipment 6 only needs to be able to securely wrap around the abdomen of trainee 1, thereby maintaining trainee 1's extended position.

[0165] For experienced swimmers, there is no need to consider coping strategies for fear, so even if the training equipment 6 has no buoyancy, they can simply maintain an extended state using the training equipment 6.

[0166] As long as the trainee 1 can maintain a stretched state through the training equipment 6, even if the trainee 1's awareness of stretching becomes weak, the trainee 1 can still maintain a stretched state through the training equipment 6 and thus carry out training.

[0167] From Figure 12 (A) to Figure 12 During (G) the training, the first layer 11 and the second layer 12 are used to tighten the front side of the abdomen 2 of the trainee 1. After the second layer 12 covers the front abdominal side of the first layer 11, the pull handle 17 at the end of the second layer 12 is pulled by hand, and the outer surface fastener 21 (concave) of the first layer 11 is engaged with the inner surface fastener 23 (convex) of the second layer 12. Thus, the two layers overlap to cover the front side of the abdomen. Therefore, the abdomen is wrapped and fixed by the two layers in a way that the buoyancy is greater than that of the back layer.

[0168] In this way, the training equipment 6 flexibly utilizes the force of the non-stretchable strap 14 and buckle 15, and uses the contractile force obtained by the cooperation of the stretched first layer 11 and second layer 12 to firmly fasten it to the upper part of the swimsuit above the pelvis 3 of the trainee 1 in the stretched state, thereby correcting and maintaining the posture of the pelvis 3 to an appropriate posture, such as... Figure 12 As shown in (G), the front side of the abdominal area 2 is tightened from different directions, so even if the trainee 1 moves vigorously in the water, the training equipment 6 will not fall off the abdominal area 2, but will firmly tighten the front side of the abdominal area 2, thereby maintaining the stretched state. Therefore, even with a double-layer structure, the same effect as a triple-layer structure can be produced.

[0169] Additionally, as long as the buoyancy of the ventral surface is greater than that of the back surface when training equipment 6 is worn, it does not need to be a double-layered structure with strap 14 or buckle 15 as described above. Even if it is a double-layered structure, it does not need strap 14 or buckle 15. Figure 10 In the case of training equipment 6 such as (D), or in the case of a three-layer or higher structure, or a three-layer structure without a strap 14, as long as the area around the abdomen is tightened in the same way, the same effect of giving the trainee 1 buoyancy or maintaining the extended state can be achieved.

[0170] To confirm the tightness of the training apparatus 6, a first gauge 25 is installed on the outer side of the first layer 11, and a first arrow 27 is installed at the front end of the outer side of the second layer 12. The tightness of the training apparatus 6 can be confirmed by observing the position of the first gauge 25 pointed to by the first arrow 27.

[0171] However, in training equipment 6 is Figure 9 In the case of the training device 6 with the three-layer structure shown, the three layers of the extended first layer 11, second layer 12, and third layer 13 can work together.

[0172] Or, in Figure 10 In the case of the training device 6 with the double-layer structure shown, the two layers, the first layer 11 and the second layer 12, can work together to utilize the pulley principle to flexibly apply the force of the non-stretchable belt 14 and the buckle 15, thereby using the contractile force of the reaction of the stretching part to firmly tighten the abdomen. Therefore, the calculation of the tightening force is not easy.

[0173] therefore, Figure 13 The results are shown for a sample of elastic foam rubber actually used in training equipment 6.

[0174] Figure 13 (A) shows the "load measurements of the cyclic tensile force test". The test conditions were as follows: raw material with a clamp width of 200 mm, a length of 150 mm, and a thickness of 3 mm was held at a temperature of 20°C, a humidity of 65% RH, and a test speed of 100 mm / min. The load was measured using the "cyclic tensile force test" for the force required to elongate from 25 mm to 250 mm and the force required to contract from 250 mm to 25 mm in each 25 mm shrinkage.

[0175] Figure 13 (B) illustrates the relationship between the elongation and the clamping force of an elastic foam. According to the properties of rubber, the force of elongation is different from the force of contraction; therefore, the force of contraction equals the clamping force. Figure 13 The "relationship between elongation of elastic foam and fastening force" shown is a load (kg) converted based on a 10mm width.

[0176] Regarding the theoretical definition and clamping force of training equipment 6, if the circumference around the abdomen 2 of the trainee 1 is designated as "W1", and the circumference around the abdomen 2 in the extended state is designated as "W2", then... Figure 10When the length of the training device 6 shown in (B) is set as “Mi2”, the length from the front end of the first layer 11 to the buckle 15 of the second layer 12 is set as “In”, the length from the front end of the second layer 12 to the mounting position of the first layer 11 is set as “Mi1”, and the length from the front end of the third layer 13 to the end of the face hook 21 of the second layer 12 is set as “Ou1”, the theoretical fastening force of the M-size training device 6 is the sum of the fastening force of the first layer (5.2kg) + the fastening force of the second layer (1.3kg) + the fastening force of the third layer (2.4kg), which is 69.75cm when the trainee 1 stretches with the circumference “W1” of the abdomen 2 being 75cm, and the abdomen is stretched to about 7% of the circumference “W2” of the abdomen 2 being 69.75cm. Therefore, the total is 8.9kg.

[0177] Next, the buoyancy of training equipment 6 will be explained.

[0178] The buoyancy of training equipment 6 is calculated using Archimedes' principle as follows.

[0179] The formula for calculating the buoyancy of an object is: Buoyancy = Volume × Fluid Density × Gravitational Acceleration. The force that makes an object float is buoyancy minus gravity.

[0180] The force that makes training equipment 6 float is buoyancy = volume of training equipment 6 × gravitational acceleration × (specific gravity of water - density of training equipment 6).

[0181] The density of the elastic foam used in training apparatus 6 is 266.66 kg / m³. 3 The volume of dimension M of training equipment 6 is 0.000618 (m³). 3 The buoyancy force is 4.44 [N].

[0182] The density of humans is said to be approximately 920 kg / m³. 3 ~1060 [kg / m 3 Muscular physiques are less likely to float, average physiques will float, and obese physiques will float very easily.

[0183] Theoretically, the auxiliary buoyancy required for a muscular person weighing 60kg (assuming a density of 970) to float in water with 2000cc of residual air in their lungs is 5.1N.

[0184] For reference, the buoyancy of a 500ml empty plastic bottle is approximately 4.6 (N), therefore the buoyancy of the M-size training device 6 can be considered to be roughly the same as that of a 500ml empty plastic bottle.

[0185] In this stretched state, on one side... Figure 11 (A) to Figure 11of (H), Figure 12 (A) to Figure 12 In the sequence of (H), the first layer 11, the second layer 12, and the third layer 13 of the training device 6 are stretched respectively, while being tightly wrapped and covered from the upper part of the pelvis 3 around the abdomen 2 centered on the navel of the trainee 1 to the lower part of the 10th rib 5. Each layer of the training device 6 contracts as a reaction to the stretching, wrapping and covering the abdomen 2 with a total tightening force of more than 8 kg. By wearing the training device 6 around the abdomen 2 and wrapping it tightly, even if the trainee 1 forgets to maintain the stretch, the stretching state is continuously maintained by the tightening force of the training device 6, while the trainee 1 has to constantly be aware of the training device 6.

[0186] With the training equipment 6 tightly wrapped around and worn around the abdomen 2, when trainee 1 enters the pool water, trainee 1's entire body is subjected to water pressure. Due to the tension of the body caused by this water pressure, the training equipment 6 may loosen accordingly at times, so when it loosens, the training equipment 6 is tightened again in the water.

[0187] In the water, the training device 6 has a buoyancy of 4 (N), which enables the trainee 1 to float fully in the water. Therefore, once the training device 6 is used to tighten the belt, even if the trainee 1's awareness of maintaining the stretched state becomes weak and he or she has no concentration, the fear of drowning in the water will be greatly reduced.

[0188] As mentioned earlier, simply by stretching, the digestive organs 9 and diaphragm 10 are lifted cephalad, and the pelvic floor muscles are also lifted cephalad, thereby stabilizing the pelvis 3.

[0189] Trainee 1 is in the water of a swimming pool. While maintaining an extended position, the trainee extends and raises their arms, thereby shifting the center of gravity toward the head to the degree of weight of the arms.

[0190] Furthermore, the trainee 1 wears the training device 6 from below the 10th rib 5 to the upper part of the pelvis 3, thus maintaining the extended state, thereby moving the digestive organs 9 toward the head, and through the buoyancy of the training device 6 itself, the center of buoyancy further approaches the center of gravity.

[0191] The mechanism of the movement of the center of buoyancy and center of gravity during training in this invention will be explained.

[0192] In this invention, the trainee 1, as a swimming beginner, consciously contracts the transverse abdominis 7 and other lateral abdominal muscles, causing the abdomen 2 to concave (hereinafter referred to as extension). The transverse abdominis 7 and other lateral abdominal muscles act as a constrictor around the digestive organs 9, such as the stomach, small intestine, and large intestine, and by contracting these lateral abdominal muscles, the digestive organs 9 can move towards the head, and the center of gravity also shifts towards the head. Furthermore, during the extension movement, by concave the abdomen and lifting the diaphragm 10 towards the head, when air is inhaled into the lungs while consciously expanding the lower rib cage to the left and right, the lower rib cage expands to the left and right, and air accumulates on the lower side of the lungs 8 (pelvic side). This allows the center of buoyancy to shift towards the feet, thus bringing the body's center of gravity closer to the center of buoyancy, making it easier to float horizontally in the water. The trainee 1 can fully experience this horizontal floating posture through the whole body and store the movement in the cerebellum.

[0193] Because of the buoyancy of the posture that helps to float horizontally by maintaining the extended state through the training device 6 and by one's own strength, as long as the training device 6 is worn, the posture can be maintained even in the water without the lower body sinking to an extreme degree, thus enabling the lungs 8 to be inhaled when the face is exposed above the water.

[0194] During inhalation while maintaining an extended position, with the diaphragm 10 relaxed and moving towards the head, the external intercostal muscles contract, the thoracic cavity expands, and the diaphragm 10 does not contract or move towards the pelvis 3, thereby expanding the lower thoracic cavity and inhaling air (see reference). Figure 15 (C)

[0195] During exhalation while maintaining an extended position, the external intercostal muscles relax, thus narrowing the thoracic cavity and preventing the diaphragm from relaxing and moving towards the head, thereby expelling air (see reference). Figure 16 (C)).

[0196] When swimming-style breathing is performed in this way, the pelvis is stable and a good posture can be maintained, thus keeping the body afloat. This allows for pleasant swimming without using excessive and useless force, and makes it easier to perform the extended posture after the hand stroke as a streamlined swimming technique.

[0197] Wearing training equipment 6 and learning to swim using the swimming breathing technique, repeatedly tighten and loosen each layer of training equipment 6 while swimming, feeling the changes in body balance, then tightening training equipment 6 again while swimming. After becoming able to wear training equipment 6 and swim confidently, finally remove training equipment 6 and train in a streamlined swimming style while in an extended state.

[0198] Remove the training equipment 6 from your body. While wearing the training equipment 6 and memorizing the swimming breathing method, swim in a streamlined swimming style and feel the changes in your body balance. When you feel uneasy or want to confirm again, repeatedly tighten each layer of the training equipment 6 and swim, or loosen each layer of the training equipment 6 and swim. If you can finally swim confidently even without wearing the training equipment 6, then you have mastered the stretching swimming method of the present invention.

[0199] In fact, through this invention, 22 swimming beginners aged 5 to 57 were interviewed about their feelings when training with the training device 6 while wearing it around their abdomen 2.

[0200] Table 2 shows the participants' feelings in three states: not wearing the training equipment, wearing the training equipment, and swimming without the training equipment after training while wearing it. They did not feel any fear of drowning in the water, and they had a clear understanding of the relationship between wearing the training equipment and swimming. All participants actually felt the effect of training while wearing the training equipment.

[0201] Table 2

[0202]

[0203] Label Explanation

[0204] 1: Trainee (swimming beginner); 2: Abdomen area; 3: Pelvis; 4: Swimsuit; 5: 10th rib; 6: Training equipment; 7: Transverse abdominis muscle; 8: Lungs; 9: Digestive organs; 10: Diaphragm; 11: First layer; 12: Second layer; 13: Third layer; 14: Strap; 14a: End extension reinforcement; 15: Buckle; 16: Facial Velcro (concave); 17: Handle; 18: Handle; 19: 20: Hook and loop fastener (convex); 21: Hook and loop fastener (concave); 22: Hook and loop fastener (convex); 23: Hook and loop fastener (convex); 24: Hook and loop fastener (concave); 25: Ruler 1; 26: Ruler 2; 27: Arrow 1; 28: Arrow 2; S1: Wearing training equipment; S2: Stretching and tightening training equipment; S3-1: Stretching breathing (inhalation); S3-2: Stretching breathing (exhalation) S3-3: Continue; S4-1: In bath water; S4-2: Stretch and re-tighten the training equipment; S5-1: Stretch breathing (inhale); S5-2: Stretch breathing (exhale); S5-3: Continue; S6-1: In pool water; S6-2: Stretch and re-tighten the training equipment; S7-1: Stretch breathing (inhale); S7-2: Stretch breathing (exhale); S7-3: Streamline; S7-4: Continue; S8: Stretch and relax the training equipment; S9-1: Stretch breathing (inhale); S9-2: Stretch breathing (exhale); S9-3: Streamline; S9-4: Continue; S10: Stretch and remove the training equipment; S11-1: Stretch breathing (inhale); S11-2: Stretch breathing (exhale); S11-3: Streamline; S11-4: Continue.

Claims

1. A training method, characterized in that, The training method has the following steps: The trainee contracts the lateral abdominal muscles, including the transverse abdominis, causing the area around the abdomen to concave. The long, flexible training tool is stretched and tightened to cover the area from the upper pelvis around the trainee's concave abdomen to below the 10th rib; and Perform the following training, in which you alternately perform the steps of inhaling by contracting the diaphragm to significantly expand the lower thoracic cavity while maintaining the concave state around the abdomen using the contraction force of the training device, and exhaling by contracting the diaphragm to maintain the concave state around the abdomen using the contraction force of the training device.

2. The training method according to claim 1, characterized in that, The training equipment has a tightening force that makes the length around the trainee's navel 3% to 20% shorter than the length around the abdomen in a resting state.

3. The training method according to claim 1 or 2, characterized in that, The buoyancy of the ventral surface portion of the training apparatus is greater than that of the rear back surface portion.

4. The training method according to claim 1, characterized in that, The training method has the following steps: On the ground, the trainee contracts the lateral abdominal muscles, including the transverse abdominis, to create a depression around the abdomen. The trainee then uses a long, thin training device made of elastic foam that is buoyant, stretchable, and flexible to wrap tightly around the abdomen from below the 10th rib to the upper part of the pelvis. Enter the water while the training equipment is tightly wrapped around the abdomen; as well as Once the water pressure is applied to the abdomen, the trainee again contracts the transverse abdominis and other lateral abdominal muscles to cause the abdomen to concave, and then tightens the training equipment again. The training is conducted in water with the training equipment tightly wrapped around the abdomen.

5. The training method according to claim 1, characterized in that, In this training method, the following steps are performed alternately: Using training equipment to tighten the abdominal area, perform the first level position training in the water; and Following the first horizontal posture training, the tightness around the abdomen of the training equipment is loosened, and the second horizontal posture training in the water is carried out.

6. The training method according to claim 1, characterized in that, In this training method, the following steps are performed alternately: Use training equipment to tighten the area around the abdomen and perform the first level position training in the water to assume a horizontal position. Immediately following the first horizontal posture training, the training equipment is removed from around the abdomen, and in the absence of the training equipment in the water, a second horizontal posture training is performed while tightening the lateral abdominal muscles, including the transverse abdominis, in the water.

7. A training apparatus, which is long and narrow, elastic and flexible, and is wrapped tightly around the abdomen of the trainee from the upper pelvis to below the 10th rib, characterized in that, The training device has a contractile force that tightens around the trainee's abdomen in a manner that reduces the length around the trainee's abdomen by 3% to 20% compared to the length around the trainee's abdomen when the trainee is not wearing the training device at rest, and is made of an elastic foam that is stretchable and soft.

8. The training apparatus according to claim 7, characterized in that, The training equipment has an external shape of 300mm to 1500mm in length, 50mm to 400mm in width, and 2mm to 8mm in thickness.

9. The training apparatus according to claim 7, characterized in that, The training device is formed as follows: it has multiple long strip-shaped layers and face hooks corresponding to the surface of each layer. The multiple layers are elastic and flexible. When the training device is wrapped tightly around the body, there are more layers on the abdominal side than on the back side. The layers are alternately overlapped from opposite directions and fixed by each face hook. The contraction force of each layer cooperates to make the abdomen of the trainee concave.

10. The training apparatus according to claim 9, characterized in that, One end of a non-contractable, slender strap is fixed to the front end of at least one layer, and the other end of the strap passes through a buckle installed on another layer adjacent to the layer. When the front end of the other layer is stretched, the layer is also stretched with the buckle as a fulcrum, so that the two layers cooperate to wrap tightly around the abdomen.

11. The training apparatus according to claim 7, characterized in that, The training equipment has a ruler and arrows to indicate the tightness around the trainee's abdomen.

12. The training apparatus according to claim 7, characterized in that, The training device has a spinal marker that protrudes from the inner side of the central portion along the length direction and abuts against the trainee's spine.

13. The training apparatus according to claim 7, characterized in that, The buoyancy exerted on the front abdomen of the trainee by each layer of the training equipment is greater than that exerted on the back.

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