30results about How to "Improve exercise effect" patented technology

An exercise device comprises a base, two resistance arms and a resistance mechanism, the two resistance arms are rotationally connected with the base and can be oppositely opened and closed, the resistance mechanism provides resistance for the two resistance arms to be oppositely closed, and the exercise device is characterized in that the resistance mechanism comprises a sliding block and a resistance part, the sliding block is arranged on the base in a vertically movable mode, and the resistance part is arranged on the sliding block; the resistance part is used for providing resistance for preventing the sliding block from moving upwards, the resistance arms comprise first driving parts, the sliding block is provided with second driving parts abutting against the first driving parts, and when the two resistance arms rotate in a relatively closed mode, the first driving parts and the second driving parts are matched to drive the sliding block to overcome the resistance of the resistance part to move upwards. Under the cooperation of the first driving part of the resisting arm and the second driving part of the sliding block, the sliding block is driven to overcome resistance to move upwards, the resistance is transmitted through the vertical movement of the sliding block, the resistance direction is consistent with the force exerting direction of the human body, force exerting in the human body exercising process is better met, and the better exercising effect is achieved.

The utility model discloses a footboard linkage mechanism and body builder, and relates to the field of body building equipment. Its technical scheme includes: stress structure, and this structure contains the first rotary joint part of rotatable connection with external support structure, and its both sides are equipped with first force connecting part and first linkage connecting part respectively; footboard unit, including footboard; guide unit, and footboard linkage; first linkage structure, between stress structure and footboard, when the stress structure rotates with the first rotary joint part as the axle, first linkage structure drives footboard to move in the range of guide unit limit. Advantageous effects are: realize the linkage of crouching action and footboard, make shank and foot at the ankle joint place always be in the close vertical range during training, reduce the ankle joint injury probability, and can complete the maximum degree crouching simultaneously, distribute the training resistance as much as possible to the target hip muscle group, improve training efficiency greatly.

The utility model relates to the technical field of fitness equipment, in particular to a waist twisting machine, which comprises a base, a mounting bracket and pedals, the mounting bracket is rotatably connected with the base, the mounting bracket comprises two circular brackets, the two circular brackets are respectively arranged on two sides of the mounting bracket and are mutually symmetrical, the number of the pedals is two, and the pedals are arranged on the base. The two pedals are installed on the two installation supports respectively, the pedals and the base are jointly connected with an elastic piece, the base is provided with an aligning device used for driving the elastic piece to reset, the base comprises two circular bases, the two circular bases and the two circular brackets are correspondingly arranged, and the diameter of the circular bases is larger than that of the circular brackets; the utility model provides a waist twisting machine which solves the problems that a traditional waist twisting machine is complex in structure and short in service life.

The utility model provides a spiral vibration fat -burning machine relates to fitness equipment technical field, including base, pedal, fixed frame and vibration frame, is equipped with the fat -burning module on fixed frame, is used for driving vibration frame and pedal to make longitudinal reciprocating motion, the middle part fixed vibration frame has the mounting panel, sets up spiral vibration module on it, this module is constituted by vibration motor and eccentric block, motor is inverted in the mounting panel bottom surface, the output shaft is upwardly through the through -hole and is connected eccentric block, drives pedal to make transverse reciprocating motion. Through the complex effect of longitudinal and transverse vibration, form spiral vibration track, can multidimensional stimulation human muscle group, simulate real movement mode, effectively promote fat -burning efficiency and exercise effect.

The utility model discloses a super-molding shaping device, which relates to the technical field of sports equipment and is characterized in that a first platform and a second platform are connected through a cross beam; slide ways are arranged on the two sides of the cross beam and matched with the sliding mechanisms. The sliding mechanism is slidably connected with the slideway; a first adjusting mechanism is arranged on the bed body, a pushing part of the first adjusting mechanism is hinged to the hinge block, the pushing part drives the hinge block to abut against the cross beam, and the angle between the cross beam and the bed body is adjusted; a second adjusting mechanism is arranged on the sliding mechanism and drives the sliding mechanism to incline; the first platform is provided with a first platform plate and a third adjusting mechanism, and the third adjusting mechanism adjusts the angle between the first platform plate and the cross beam; the second platform is provided with a second platform plate and a fourth adjusting mechanism; the fourth adjusting mechanism adjusts the angle between the second platform plate and the cross beam. The technical problem that in the prior art, a shaping device is single in adjusting function is solved.

The utility model discloses a super-nuclear machine training device, which relates to the technical field of sports equipment and comprises a bed body, a first platform, a second platform, a folding structure and a sliding mechanism, a first platform and a second platform are respectively arranged at two ends of the bed body; the first platform and the second platform are connected through a bed body; a slide way is arranged on the inner side of the bed body, the slide way is matched with the sliding mechanism, and the sliding mechanism is connected with the slide way in a sliding mode; one end of the sliding mechanism is detachably connected with the second platform or detachably connected with the first platform; the bed body comprises a first cross beam and a second cross beam; the first cross beam and the second cross beam are both of split structures, the folding structure is arranged at the joint of the split structures, and the bed body is folded through the folding structure. Compared with a traditional device, the folding design is more convenient to store, meanwhile, the device is suitable for families and gymnasiums, and the average-effect ratio of gymnasium operation can be effectively increased.

This utility model relates to a fitness bar, comprising a bar body, a handle, and a limiting sleeve. The bar body is a cylindrical helical spring tube of a certain length, including a main body and a first end portion that tapers outward from one end of the main body. The handle is fitted onto the inner part of the first end portion. The limiting sleeve has a threaded connection hole inside that matches the outer part of the first end portion. The limiting sleeve is threadedly connected to the outer part of the first end portion through the threaded connection hole and stops the outer end of the handle, preventing the handle from slipping off the first end portion. When the handle is gripped and swung or shaken, the bar body vibrates accordingly. This fitness bar has the advantages of simple structure, convenient use, good exercise effect, and high reliability.

The invention provides a cognitive training device, which relates to the technical field of cognitive training, and comprises a mounting support part, the mounting supporting part is fixedly connected with a foot lifting auxiliary adapter; a foot lifting cognition adjusting part is mounted on the foot lifting auxiliary adaptive part; the foot lifting cognition adjusting part is fixedly connected with two road surface inclination detecting parts; the foot lifting cognition adjusting part is rotationally connected with a ground auxiliary attaching part. The device can assist in foot lifting height detection and training work, effectively improves the leg control force of a patient, can train the action cognition of the patient, better judges the leg lifting height, effectively reduces the risk of stumbling and the like, and solves the problem that an existing cognitive training device is not provided with a leg lifting assisting cognitive control training structure, and the training effect is poor. The problems that when the legs of a patient cannot be controlled to be too high for a long time, leg lifting obstacles are likely to be caused, and the patient is very likely to be stumbled are solved, and meanwhile an auxiliary slope exercise simulation structure does not exist.

[Problem] To provide a sperm motility improver that is highly safe and can effectively improve sperm motility. [Solution] A sperm motility improver comprising nicotinamide mononucleotide as an effective ingredient.

The utility model discloses a linkage mechanism, relates to the field of fitness equipment, and adopts the technical scheme that the linkage mechanism comprises a first movement part rotationally connected with an external structure, a second movement part arranged on one side, and a linkage assembly positioned between the first movement part and the second movement part. The first movement part and the second movement part can be linked with different parts of the human body, and when the first movement part rotates, the second movement part gets close to or away from the first movement part under the action of the linkage assembly. The linkage mechanism has the advantages that the first movement part and the second movement part of the linkage mechanism are in linkage with different parts of the human body respectively, and when the first movement part rotates relative to an external structure, the second movement part can move close to or away from the first movement part under the action of the linkage assembly. The fitness equipment has good adaptability to fitness actions needing matching of the upper limbs and the lower limbs or matching of the trunk and the lower limbs and the like. The requirements of different fitness scenes can be met only by adjusting the structures and the positions of the first exercise main body and the second exercise main body, and high universality and practicability are achieved.

The application relates to the technical field of data analysis, and discloses a data analysis method combining muscle synergy analysis and muscle function network, which comprises the following steps: step S1: collecting surface electromyogram signals of each muscle block during movement; step S2: muscle synergy mode analysis, integrating the collected surface electromyogram signal data by using non-negative matrix decomposition, extracting a muscle synergy mode, and quantifying the quality of a reconstruction matrix by using a variance explanation rate; and step S3: muscle function network analysis, obtaining normalized mutual information between each muscle channel as a nonlinear correlation characteristic parameter of multi-channel surface electromyogram, and constructing a muscle function network. The data analysis method of the application combines muscle synergy analysis and muscle function network based on surface electromyogram signals, uses non-negative matrix decomposition for muscle synergy analysis, quantifies the mutual relationship between channels by using normalized mutual information, and constructs a muscle function network, so that potential and valuable structured and modularized information in electromyogram data can be found.

The utility model discloses an eight-segment brocade motion identification auxiliary device based on multi-modal data fusion, which comprises a wearing bandage, an integrated module, a power supply module, a feedback module and an image analysis module, the wearing bandage is provided with a magic tape, a mounting cavity and a buffer layer are arranged in the wearing bandage, and the integrated module comprises a nine-axis attitude sensor, a data processing unit and a Bluetooth unit. The motion data can be collected, processed and sent to an external terminal, the image analysis module is composed of a camera and a processor and can capture motion images, position joint points and calculate the similarity with standard motion, the power supply module is a bendable lithium polymer battery, and the feedback module is provided with a vibration unit and a terminal graphical interface and achieves tactile and visual feedback. And the data processing unit and the image analysis module synchronize data through Bluetooth and fuse the data to generate a comprehensive evaluation result. In use, the device can assist a user in accurately identifying eight-segment brocade actions, provides comprehensive action evaluation through multi-modal data fusion, helps the user to correct the actions in time, and improves the exercise effect.

The utility model discloses a pelvic floor muscle exercising device for stress urinary incontinence, relates to the technical field of exercising equipment, and solves the problems that some existing pelvic floor muscle exercising auxiliary instruments in the market are limited in function, so that a user often needs to purchase various instruments, the cost is high, the occupied space is large, and the exercising complexity is increased. A pelvic floor muscle exercising device for stress urinary incontinence comprises a fixed seat; the fixing base is of a rectangular plate structure. A supporting rod is fixedly arranged at the top of the rear side of the fixed seat; the supporting rod is of a cylindrical structure. The two sides of the supporting rod are each fixedly provided with a set of fixing plates of a T-plate structure. Two second sliding rods of L-shaped rod structures are arranged in the circular through groove in the front side of the fixing plate in a sliding mode. Connecting plates of arc-shaped plate structures are fixedly arranged at the inner side ends of the two second sliding rods. The sitting posture exercise mode and the standing posture exercise mode are integrated, a user does not need to purchase instruments with different functions, and cost and space are greatly saved.

The utility model relates to the technical field of training equipment, and discloses portable tendon training equipment for old people, which comprises a shell, an adjusting mechanism is mounted on one side of the shell, connecting mechanisms are arranged on one side of the shell and one side of the adjusting mechanism, supporting mechanisms are arranged on two sides of the bottom of the shell, and the supporting mechanisms are connected with the adjusting mechanism. A storage mechanism is arranged at the bottom of the shell, the connecting mechanism comprises two main shafts, a plurality of second springs are fixedly connected to the inner walls of the two sides of each main shaft, a sliding plate is fixedly connected to the other end of each second spring, a clamping ball is fixedly connected to the other end of each sliding plate, and connecting rods are installed on the two sides of each main shaft. According to the utility model, the sliding type sealing cover is used for protection, all the structures are precisely matched, the use stability is ensured, rapid disassembly and assembly and folding are realized through connection modes of nesting, buckling, threads and the like, the overall size is minimized, and carrying and storage are convenient.

The application provides a kind of prevents venous thrombosis bed with ankle auxiliary exercise mechanism, belong to medical training device technical field. Including base, the top of base is equipped with rotating shaft seat one and rotating shaft seat two, the top of base is placed with the foot of the board, the top of the foot of the board is equipped with heel slot, the one end of rotating shaft seat one is provided with stretch plate, the back bottom end of stretch plate is provided with elastic telescopic rod. The application is equipped with buffer massage assembly, etc., to improve the patient during exercise, through the control of heel displacement caused by palm off, increase the adjustment steering assembly, adapt to different foot movement flip angle, at the same time, increase the resistance, accelerate the compactness of foot bottom stress surface, promote the circulation of blood, improve the exercise effect, the chain use of massage function, increase the interest of patient exercise, accelerate the recovery cycle, avoid the formation of venous thrombosis, cope with different palm size at the same time, reduce the workload of medical staff.

The invention provides intelligent health-care gait monitoring equipment which comprises an auxiliary mainboard, one side of the outer surface of the auxiliary mainboard is fixedly connected with a first connecting plate, the outer wall of one side of the first connecting plate penetrates through and is slidably connected with a rotating shaft, and the outer surface of the rotating shaft is fixedly sleeved with a second connecting plate; and an auxiliary secondary plate is fixedly connected to one side of the outer surface of the second connecting plate, binding assemblies are installed on the outer surface of the auxiliary main plate and the outer surface of the auxiliary secondary plate, and a shell is fixedly connected to one side of the outer surface of the auxiliary main plate. Through the arrangement of the first connecting plate, the second connecting plate, the rotating shaft, the leg lifting auxiliary monitoring assembly, the thigh inertial sensor and the shank inertial sensor, gaits of thighs and shanks of old people during walking can be monitored, then the gaits are uploaded to a monitoring center and a receiving terminal through a controller, reminding and correction can be conducted through the receiving terminal, and the walking quality of old people is improved. The exercise effect is improved.

The invention discloses an antenatal crotch exerciser, and relates to the technical field of medical instruments, a seat cushion is arranged to ensure that a pregnant woman can do crotch exercise in a sitting state, two feet can be stretched towards two sides after a handle is held, and three springs I on the inner side can be pulled when the angle of a connecting rod is changed, so that the crotch exerciser can exercise the crotch. Reverse supporting force is applied to the legs of the pregnant woman through the first springs, when the two legs are combined, the connecting rod can extrude the three first springs, the first springs are supported through elastic force, and therefore the exercise purpose is achieved, when the exercise mode is adjusted, the two legs can be swung front and back, and reverse supporting force is applied to the side plates in cooperation with arrangement of coil springs on the side plates; the legs and the crotch of the pregnant woman apply force, so that the pregnant woman does not need to be driven by a large amount of electricity during exercising, the potential safety hazard in use is reduced, the pregnant woman can switch different exercising modes under the condition that the position of the pregnant woman is not adjusted, the burden of the pregnant woman is reduced, the ideal exercising effect is achieved, and the pregnant woman is helped to smoothly deliver.

This invention belongs to the field of UV-curable resins, specifically relating to a self-healing UV-curable resin, its preparation method, and its applications. The preparation method includes the steps of: adding p-hydroxyanisole, glycidyl methacrylate, and 4-dimethylaminopyridine to an amino-terminated prepolymer and reacting, followed by separation to obtain the resin. The preparation method of the amino-terminated prepolymer includes adding an activator to a carboxyl-terminated prepolymer and reacting it, followed by adding a polyetheramine. The preparation method of the carboxyl-terminated prepolymer includes reacting a diol and an anhydride in a solvent. The invention provides corresponding products and their applications in the preparation of UV-curable coatings, UV-curable adhesives, and 3D printing consumables. Compared to existing technologies, the coating prepared by the method provided in this invention exhibits significant self-healing function and high elongation at break.

The utility model discloses an interesting training device for rehabilitation exercise of lymphedema. The interesting training device comprises a base; the two sliding grooves are symmetrically formed in the upper side wall of the base; the support is arranged between the two sliding grooves in a sliding mode, and a sleeve is fixedly connected to the upper side wall of the support; compared with the prior art, the lymphedema rehabilitation exercise interesting trainer has the advantages that the blowing mechanism is arranged, the blowing effect of real riding can be simulated when arms are exercised, the exercise interestingness is greatly enhanced, gentle breeze can be provided when the lymphedema rehabilitation exercise interesting trainer is used in hot days, and the training effect is good. The body temperature of a patient is effectively reduced, and the use comfort is improved; through the arranged resistance adjusting mechanism, the pre-tightening force of the spring can be flexibly adjusted, so that the training intensity is changed when the legs are exercised, personalized adjustment can be conducted according to the rehabilitation process and individual differences of patients, the exercise effect can be effectively improved, and rehabilitation of lymphedema is promoted.

The utility model relates to a kind of postpartum pelvic floor muscle recovery training devices, it includes bed board, the vertical plate that can slide along the front and back direction of bed board and the clamping plate being arranged at the both sides of vertical plate, guiding limiting mechanism is arranged between slide and bed board, the front and back direction sliding of slide relative bed board can be made by the guiding limiting mechanism;Multiple upper end open grooves are vertically arranged in the inside of the both sides wall of vertical plate, adjusting block is clamped in the groove, spring is arranged on the adjusting block, adjusting bolt is screw-connected on the upper portion of the groove;Connecting rod is hinged between the adjusting block and clamping plate.The postpartum pelvic floor muscle recovery training device fixed position is adjustable, clamping plate spacing is small, and clamping force size is adjustable.

The application discloses a low-heat-release, low-smoke-density flame-retardant polyamide material and a preparation method and application thereof, and belongs to the technical field of high polymer materials. The material comprises nylon resin 52-61%, a flame retardant 18-26%, a flame-retardant synergist 6-10%, a plasticizer 8-15%, a coupling agent 0.5-1.0%, an antioxidant 0.3-1.0% and a lubricant 0.3-1.0%, and is prepared through mixing, melt mixing, extrusion and granulation. The application effectively reduces the heat release and the smoke density of the polyamide material during combustion through the synergistic effect of the components such as the flame retardant, and meanwhile, good mechanical properties and processing stability are maintained, thereby meeting the demand of high-safety-grade application scenarios.

This invention provides a front-mounted elliptical trainer with a lifting function, including a frame. The frame is equipped with a flywheel system, a multi-link rotating mechanism, a lifting mechanism, and protective components. The flywheel system is located at the front of the frame. The multi-link rotating mechanism cooperates with the flywheel system and the lifting mechanism. The lifting mechanism is located at the rear of the frame. Protective components are provided on the outside of the flywheel system and at the front and rear ends of the frame. This invention allows adjustment of the incline of the elliptical trainer by adjusting the position of the multi-link rotating mechanism through the lifting mechanism. This allows for changes in stride length and the angle of force application. Different inclines can exercise different lower limb muscle groups. The protective components cover and shield the flywheel system and the front and rear of the frame to prevent injury to the user and improve safety.

This invention discloses a personalized control system and method for intelligent exercise equipment, relating to the field of exercise equipment control technology. The method includes: assessing the degree of similarity in physical characteristics between other users and the user to obtain approximate users; acquiring historical records of changes in physical characteristics and historical exercise records of the approximate users, acquiring the user's initial historical exercise records and target physical characteristic data, and analyzing the reference value of the approximate users for the user's exercise to obtain reference users; acquiring historical equipment operation records generated during the use of the intelligent exercise equipment by the reference users, analyzing the impact of the intelligent exercise equipment on the user's exercise effect under different operating states to obtain target operation data; and controlling the operating state of the intelligent exercise equipment based on the target operation data when the user exercises with the intelligent exercise equipment, and providing message prompts to the user.

The utility model discloses an exercise device for preventing foot drop, which comprises a foot base plate, the top of the foot base plate is fixedly connected with a leg support frame, the outer surface of the top of the leg support frame is fixedly connected with a soft cushion, one side of the soft cushion is fixedly connected with a fixed connecting belt, and the upper top end of the tail end of the fixed connecting belt is fixedly connected with an upper connecting plate. The lower end of the tail end of the fixed connecting belt is fixedly connected with a lower connecting plate; a rotating rod is rotationally connected into the upper connecting plate and the lower connecting plate, a movable connecting belt is fixedly connected to the outer surface of the rotating rod, a second fixing ring is fixedly connected to the tail end of the movable connecting belt, a worm gear is fixedly connected to the end face of the upper end of the rotating rod, and a tooth block, close to one side of the fixed connecting belt, of the worm gear is meshed with a worm. According to the exercise device capable of preventing foot drop, the length of the fixed connecting belt and the length of the movable connecting belt are more fit with the perimeter of the legs of the patient, so that the leg supporting frame cannot fall down during training, and the foot drop exercise effect of the patient is more remarkable.

The utility model relates to the technical field of exercise equipment, and discloses an intelligence development rocking wheel, the intelligence development rocking wheel comprises a support and a hand wheel mechanism, the hand wheel mechanism is detachably connected to the support, the hand wheel mechanism comprises a shell, a transmission assembly and two handles, the transmission assembly comprises two main gears rotationally arranged on the shell, the two main gears are in transmission connection, and the two main gears are in transmission connection. One main gear is stressed to rotate and can drive the other main gear to rotate, each handle is connected to one main gear through a connecting shaft, and the axis of the connecting shaft is parallel to or coincides with the rotating axis of the corresponding main gear. The exercise device is simple in structure, low in cost, easy to operate, labor-saving and good in exercise effect.

The utility model belongs to the technical field of mountain climbing machine structure for body -building, especially point a mountain climbing machine of adjustable resistance, including frame, be provided with handheld part on the frame, frame is provided with left and right slide rail, be provided with the pedal on the slide rail, resistance adjusting device is provided in the frame, and the connecting piece is swing on the resistance adjusting device, and the connecting piece is connected two pedals respectively, under the action of connecting piece, two pedals make reverse synchronous movement, resistance adjusting device includes the carousel and resistance piece, and the connecting piece is connected in carousel and can drive carousel rotation, through adjusting the distance of resistance piece and carousel or the contact surface of resistance piece and carousel, thereby adjusting the resistance of rotating carousel, the utility model provides a mountain climbing machine of adjustable resistance.

The invention discloses a wheelchair type spinning pedal connecting system suitable for patients with lower limb and cognitive impairment, which comprises a spinning main body, a pedal component and a rotatable head component, wherein the spinning main body is provided with a frame, a pedal component and a rotatable head component, and the pedal component and the rotatable head component are arranged on the frame; the pedal assembly comprises a pedal shaft capable of rotating around the axis of the pedal shaft and pedal plates coaxially arranged at the two ends of the pedal shaft in a sleeving mode, through linkage of the vehicle head and the pedals, a cognitive training scene is more interactive and immersive (for example, in a universe scene, a patient can autonomously control roles to move forwards and backwards and steer to avoid), and the cognitive training effect is better. The problems that a traditional training mode is single and interestingness is insufficient are effectively solved, the training enthusiasm and compliance of a patient are improved, and then the rehabilitation effect is improved.

The utility model discloses a counterweight type deep squat trainer, including vertical first support and second support on the ground, and the first support is hinged with the suspension frame of the front end of setting up on the second support through the installation frame, and the front end of suspension frame is provided with two arm lifting frames for the operation of the exercise personnel, and the ground below arm lifting frame is provided with the footboard connected on the second support, the left and right sides of suspension frame are provided with the counterweight block through the counterweight rod respectively, the upper end of first support is provided with the sunshade net for shading towards arm lifting frame side, and the second support above footboard is provided with the backrest for supporting the back of the exercise personnel. The utility model supports the back of the exercise personnel through the backrest, avoids the waist injury of the exercise personnel in the process of exercising, can adjust the position of counterweight block according to the actual situation of the exercise personnel and the depth of exercise in the process of exercising, thereby improves the exercise effect and experience effect of the exercise personnel.

The application belongs to the technical field of robots, and discloses an amphibious robot propulsion device and method based on a wheel-propeller composite structure. The device is integrated with a reduction motor driving system of a wheel mechanism and a composite propeller system of a propeller mechanism, and outputs propulsion power in the same coaxial direction. The reduction motor driving system takes a waterproof reduction motor as a driver to provide power for the amphibious robot when walking on the ground. The composite propeller system takes a propeller as a driving component to provide power for the amphibious robot when floating in water. The application can interact with other structures to form vector propulsion, increase controllability and stability of the robot, and quickly switch between water and land modes. The switching structure is simple. Most amphibious robot water-land switching structures are too complex, which causes great pressure on the body space and reduces the practicability of the product.

The utility model relates to a technical field of seat, especially disclose a kind of secretary office table and chair with exercise function, by setting up pushing mechanism, L-shaped handle can be turned to vertical state in the inside of mounting block when using, back of hand holds and adjusts sitting posture to make back adhere to office chair back, sink shoulder to keep standard power posture, then push L-shaped handle by chest power, drive mounting block and ladder sliding block along ladder limit sliding groove smooth sliding, while the second limit wheel of the symmetrical setting of ladder limit sliding groove side wall is supplied with rope winding, keep rope body tension without deviation when winding to ensure that the effect of guiding is effective, avoid rope to slide and separate from track or produce violent friction, so that pushing mechanism can be realized under the support of stable structure, guide user to carry out chest muscle exercise with standard posture, both improve exercise effect, prevent exercise injury caused by posture error or structure loosening, and each component cooperation makes movement trajectory controllable, avoid exercise action deviation influence chest muscle power efficiency.