Exercise form feedback device

Abstract

We provide an exercise form feedback device that allows even beginners to easily grasp the information they need while running. [Solution] When running while maintaining a consistent running form, each light repeatedly turns on and off at the same brightness in a constant rhythm. For example, the sequence right green → center purple → left green → center purple → right green → ... is repeated in a constant rhythm. Therefore, by running while maintaining the same brightness and color at a constant rhythm, the user can suppress variations in running form. For example, if the form becomes disrupted due to fatigue, the change in the light emission rhythm, brightness, and color allows the user to recognize the change and try to return the movement of each part of the body to its original state.

Description

Technical Field

[0001] The present invention relates to a motion form feedback device that enables even beginners to run and walk in a correct posture.

Background Art

[0002] As an easy exercise, running has attracted attention. For runners, by knowing their own running form and improving it to a more correct form, they can prevent injuries and improve running economy. However, not all runners can receive analysis and guidance by a professional coach.

[0003] On the other hand, various devices and programs have been proposed that can collect various data by sensors during running and use this data to analyze the form (for example, Patent Documents 1 to 4).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, conventional devices and equipment analyze highly specialized information and are not necessarily easy to understand, especially for beginners. For example, while runners with some experience and knowledge can use the analysis data to improve their running form, it is difficult for beginners who have just started running, and especially for middle-aged and older runners, to understand how to improve their running form just by looking at the data.

[0006] Furthermore, even when analyzing results after a run, it is difficult to predict how the results will change if one alters their running form. Therefore, it is desirable to provide runners with real-time feedback on their running form while they are running.

[0007] On the other hand, methods have been proposed to display acquired data in numerical form or other formats on mobile devices in real time, even with conventional equipment. However, this is dangerous because runners need to check various data while running. In particular, the more detailed information is displayed, the worse the visibility becomes, making it difficult for runners to accurately grasp the necessary information.

[0008] Furthermore, methods have been proposed to notify runners of a set pitch with sound during running, but like a metronome, they simply indicate the pitch and have little effect on improving running form. In addition, some devices emit a warning sound when certain parameters deviate from pre-set values, but as mentioned above, it is difficult for beginners in particular to understand how to set the parameters and how to respond to the warnings.

[0009] In response, the inventor observed beginner runners and middle-aged and older runners and found that many of them exhibited running forms such as slow and insufficient pelvic rotation speed, outward-pointing toes, and excessive backward leaning posture upon landing. Such running forms can lead to injuries to the hips, knees, and shins, so it is desirable to improve running form.

[0010] Therefore, after diligent research, the inventor focused primarily on the rotation of the pelvis and the magnitude and direction of the impact of landing (anterior pelvic tilt posture), and found that improving at least these factors can lead to a reduction in the risk of injury and an improvement in running economy. For example, by increasing the rotational speed and amount of the pelvis and running while maintaining a correct anterior tilt posture, especially anterior pelvic tilt, the upper body and pelvis rotate appropriately, which improves the outward turning of the toes, reduces the burden on the knees and lower back, and as a result the stride lengthens, leading to an improvement in running speed and a reduction in fatigue.

[0011] In this way, by limiting the information to as little as possible and making it easy for runners to grasp while running, even beginners can naturally acquire proper running form without needing detailed knowledge. However, conventional devices focused on obtaining more information and performing detailed analysis, and were not suitable for beginner runners to easily use to improve their running form while running.

[0012] This invention was made in view of the aforementioned problems, and aims to provide an exercise form feedback device that allows even beginners to easily grasp the information necessary during running. [Means for solving the problem]

[0013] To achieve the aforementioned objectives, the present invention provides an exercise form feedback device capable of providing feedback to a user on their running or walking form, comprising: a sensor unit having at least a sensor capable of detecting the rotation of the user's pelvis and two sensors in mutually orthogonal directions capable of detecting the user's landing impact and pelvic anterior tilt angle; a transmission unit that transmits the information detected by the sensor unit to the user; and a control unit that controls the transmission unit, wherein the control unit is capable of transmitting the magnitude of the information and the timing at which the information was obtained to the user in real time via the transmission unit based on the signal from the sensor unit.

[0014] The transmission unit comprises multiple lights, and it is desirable that the control unit, based on the signal from the sensor unit, be able to transmit the timing and magnitude of the information obtained in real time to the user through the lighting timing and brightness of the corresponding lights.

[0015] It is desirable to have a brightness adjustment unit that can adjust the maximum brightness of multiple lights.

[0016] At least three of the lights may be used, with the first light indicating the rotational speed of the user's pelvis to the left (counterclockwise), the second light indicating the rotational speed of the user's pelvis to the right (clockwise), and the third light indicating the impact upon landing and the anterior pelvic tilt angle.

[0017] In this case, the third light is configured by integrating at least two light sources of different colors, and the control unit may cause one of the light sources to emit light upon landing, and the greater the impact, the brighter the light source of the one light source will emit light, and the greater the anterior pelvic tilt angle of the user, the brighter the light source of the other light source will emit light, and the user may be able to see the mixed light of the two light sources in the third light.

[0018] Further, when the control unit rotates the pelvis in the left (counterclockwise) direction of the user, the control unit causes the light source of the first light to emit light, and the greater the rotation speed, the brighter the light source emits. When the pelvis rotates in the right (clockwise) direction of the user, the control unit causes the light source of the second light to emit light, and the greater the rotation speed, the brighter the light source emits.

[0019] The sensor for detecting the pelvic tilt angle may be calibrated to set the initial value of the in-sagittal-plane angle relative to the ground. After detecting a pelvic tilt of a predetermined angle or more, the pelvic tilt angle at a predetermined time is set to zero.

[0020] According to the present invention, in order to transmit information to the user during running, the user can know information regarding his / her own running form while running. Further, regarding the running form, since only the rotation of the pelvis, the landing impact, and the impact direction (pelvic tilt angle) are transmitted, it is easy for the user to understand, and even a beginner can easily improve the running form.

[0021] In addition, if the transmission unit is a plurality of lights, the user can easily grasp the information based on the lighting timing and brightness of the lights.

[0022] Further, by providing a brightness adjustment unit capable of adjusting the maximum brightness of the lights, for example, during running in the daytime, the maximum brightness is increased to improve visibility, and at night, the brightness is suppressed so as not to be too conspicuous to the surroundings and to suppress glare for the user.

[0023] In addition, by using at least three lights, two lights indicate the information of the rotation speed of each pelvis in the left and right directions of the user, and one light indicates the information of the impact at landing and the pelvic tilt angle, so that the necessary information can be transmitted with a minimum number of lights.

[0024] For example, one light is configured by integrating at least two light sources of different colors. Depending on the intensity of the colors of the two-color light source in one light, the user can grasp two pieces of information. For example, by using a blue light source to indicate the anterior pelvic tilt angle and a red light source to indicate the landing impact, as the anterior pelvic tilt angle increases, the color of the light at the time of landing becomes closer to purple to blue. Therefore, the user can grasp that the anterior pelvic tilt angle has increased.

[0025] Also, by using two lights that indicate the information of the rotational speed of each pelvic bone in the left-right direction of the user, if the rotational speed of the pelvic bone is high, the light is made to emit light with a higher brightness. Thus, the user can easily know the change in the usage of the waist (pelvic bone) during their own running through brightness and timing.

[0026] In addition, in order to eliminate the influence of the attachment method when the device is worn on the body and the normal posture of the user, etc., it is desirable to calibrate the sensor that detects the anterior pelvic tilt angle before use. At this time, after taking a forward tilt posture at an angle that is impossible during running, calibration is performed with the anterior pelvic tilt angle set to zero, making the operation easy.

Advantages of the Invention

[0027] According to the present invention, it is possible to provide a motion form feedback device that enables even beginners to easily grasp the information necessary during running.

Brief Description of the Drawings

[0028] [Figure 1] Schematic diagram showing the configuration of the motion form feedback device 1. [Figure 2] Diagram showing the usage state of the motion form feedback device 1. [Figure 3] It shows the attachment state of the light to the hat 21, (a) is a perspective view, and (b) is a bottom view. [Figure 4] Flowchart showing the operation of the motion form feedback device 1. [Figure 5] A flowchart illustrating the operation of the exercise form feedback device 1. [Figure 6] A diagram showing the illumination status of the lights during calibration. [Figure 7] A diagram showing the status of lights while running. [Modes for carrying out the invention]

[0029] Preferred embodiments of the present invention will be described in detail below with reference to the drawings. Figure 1 is a schematic diagram showing the configuration of the exercise form feedback device 1. The exercise form feedback device 1 is a device that can provide the user with real-time feedback of form information during running or walking, and mainly consists of a sensor unit 3, a control unit 5, a transmission unit 7, etc.

[0030] The sensor unit 3 has a sensor 9 capable of detecting acceleration or angular velocity in multiple axial directions. For example, the sensor 9 consists of at least an angular velocity sensor capable of detecting the rotation of the user's pelvis (described later) and two acceleration sensors in mutually orthogonal directions capable of detecting the user's landing impact and pelvic tilt angle. Details of each sensor will be described later.

[0031] The information detected by the sensor unit 3 is sent to the transmission unit 7 via the control unit 5. That is, the control unit 5 controls the transmission unit 7 to transmit the various types of information detected by the sensor unit 3 to the user. In the following description, the transmission unit 7 is described as a multiple LED light, but information may also be transmitted to the user by other methods such as sound.

[0032] The control unit 5 includes a microprocessor 11 for processing, a brightness adjustment unit 13 for adjusting the brightness of each light, and a PMW (Pulse Width Modulation) 15 for adjusting the brightness of the LED light source. The transmission unit 7 uses at least three lights: a right-side light 17a which is the first light, a left-side light 17b which is the second light, and a central light 17c which is the third light. In this embodiment, the right-side light 17a and the left-side light 17b use single-color green light sources 19a and 19b, respectively, while the central light 17c uses two-color blue light sources 19c and a red light source 19d.

[0033] For example, when the sensor 9 detects a value above a certain level, the microprocessor 11 turns on the corresponding light at that time and adjusts the brightness of the light emitted by the PMW 15 according to the magnitude of the value. In other words, each light starts emitting light when the numerical value of the target information reaches a predetermined level, and the brightness changes according to the magnitude of that numerical value. Details regarding the timing of each light's emission will be described later.

[0034] The brightness adjustment unit 13 can adjust the maximum brightness of each light source of the right light 17a, left light 17b, and center light 17c. For example, when using the device during bright daytime hours, the overall maximum brightness can be increased so that the user can easily perceive the light from each light source. On the other hand, at night, the maximum brightness can be reduced to prevent the user from feeling dazzled.

[0035] Next, we will explain how to use the exercise form feedback device 1. Figure 2 shows the exercise form feedback device 1 attached to the user 20. Here, the vertical direction is defined as the z direction, and the direction parallel to the user 20's direction of movement is defined as the y direction. The rotational direction around the z axis is defined as the R direction.

[0036] The sensor unit 3 is a modular unit and is attached to the user's 20 waist area with a band or the like. Inside the sensor unit 3, there is a sensor that can detect at least the acceleration in the vertical direction (z direction), the acceleration in the forward and backward direction (y direction) perpendicular to the z direction, and the angular velocity in the rotational direction (R direction) of the waist (pelvis).

[0037] Here, the right light 17a and the left light 17b are connected via an angular velocity sensor capable of detecting the rotational speed of the pelvis and a control unit 5. The blue light source 19c of the central light 17c is connected via an acceleration sensor capable of detecting acceleration in the anterior-posterior direction and a control unit 5, and the red light source 19d of the central light 17c is connected via an acceleration sensor capable of detecting acceleration in the posterior-posterior direction and a control unit 5. In other words, the right light 17a indicates information on the rotational speed of the user 20's pelvis to the left (counterclockwise), the left light 17b indicates information on the rotational speed of the user 20's pelvis to the right (clockwise), and the central light 17c indicates information on the magnitude of the impact upon landing and the anterior pelvic tilt angle.

[0038] Although the control unit 5 and battery are not shown in the illustration, they may be integrated into the same package as the sensor unit 3, or they may be attached to the body as separate components. In this embodiment, the transmission unit 7 is attached to the brim of the user's 20 hat 21.

[0039] Figure 3 shows the state in which the right light 17a, left light 17b, and central light 17c are attached to the hat 21, with Figure 3(a) being a perspective view and Figure 3(b) being a bottom view. The right light 17a, left light 17b, and central light 17c are each attached to the brim of the hat 21 at predetermined intervals, for example, by clips. For example, as viewed from the user 20, the right light 17a is positioned near the front of the right eye, the left light 17b is positioned near the front of the left eye, and the central light 17c is positioned in between.

[0040] In this embodiment, an example is shown in which each light is fixed to the brim of the hat 21, but this is not the only option. For example, each light may be fixed to the brim of a sun visor, or to the frame of sunglasses or eyeglasses, etc.

[0041] User 20 runs or performs other activities while looking ahead without focusing on each light. However, since the right light 17a is positioned within the field of view of the right eye, for example, the user can perceive when the right light 17a is emitting light and its brightness at the edge of their field of view. Similarly, the user can perceive when the left light 17b and the central light 17c are emitting light and their brightness at the time within their field of view while running. In other words, user 20 can perceive whether each light is emitting light (timing), its color, and its brightness at the time.

[0042] Furthermore, if each light is an LED, the directivity of the light may be high, potentially making it difficult to see the light clearly within the user's field of view. In this case, lenses or light-diffusing components that can diffuse the light towards the user may be used for each light. Conversely, to prevent light from diffusing or leaking in directions other than the user, light-shielding sections may be provided on the front or sides as needed.

[0043] Next, the control process of the control unit 5 of the exercise form feedback device 1 will be described. Figures 4 and 5 are flowcharts showing the control of the exercise form feedback device 1. First, as described above, the control unit 5 reads the acceleration in the z and y directions using sensors, calculates the "acceleration" (magnitude of the composite acceleration vector), and calculates the "pelvic anterior tilt angle" from the angle of the acceleration vector (step 100). Note that the detection of the angle (tilt) by the acceleration sensor can be done using a known method. Thus, the "pelvic anterior tilt angle" indicates the degree of the forward tilt angle of the user's pelvis (degree of pelvic anterior tilt), and the "acceleration" indicates the magnitude of the acceleration vector calculated from the downward and forward accelerations.

[0044] Next, the control unit 5 determines whether the "pelvic anterior tilt angle" is greater than or equal to a predetermined value (step 101). If it determines that the "pelvic anterior tilt angle" is greater than or equal to a predetermined value, it moves to the calibration process (step A).

[0045] Figure 5 is a flowchart showing the calibration process, and Figure 6 is a conceptual diagram showing the operation during calibration. Calibration is a process of initializing the sagittal plane angle to eliminate the influence of, for example, the mounting state of the sensor. Before starting to run, the user 20 leans forward to a pelvic anterior tilt angle θ (e.g., θ = 45 degrees) or more, which would not occur during normal running. The control unit 5 starts calibration if the pelvic anterior tilt angle is above a predetermined level.

[0046] When calibration is initiated, the control unit 5 first illuminates the blue light source 19c of the central light 17c (for example, for about 2-3 seconds), as shown in Figure 6(a), to inform the user that calibration has been completed (step 200). After that, the user 20 corrects their posture to a straight standing position (or a slightly forward-leaning posture as when running).

[0047] The control unit 5 simultaneously illuminates the right light 17a and the left light 17b for a predetermined waiting time (for example, about 4 seconds) (step 201) to inform the user 20 that calibration is in progress.

[0048] Next, the control unit 5 calculates the "pelvic anterior tilt angle" during a predetermined waiting time during calibration (while the right light 17a and left light 17b are simultaneously lit) and sets the average value during the waiting time as the Ref value (step 202). In this way, for the sensor that detects the "pelvic anterior tilt angle," initial settings are made for the angle relative to the ground in the sagittal plane, so calibration is possible after detecting a pelvic anterior tilt of an angle greater than a predetermined angle, with the "pelvic anterior tilt angle" at a predetermined time set as the zero point. Furthermore, the Ref value can be arbitrarily set as the reference pelvic tilt angle during running. For example, once you become accustomed to it, you can increase the pelvic tilt angle during calibration and set the Ref value to be more forward-tilted, allowing for evaluation (feedback) in a more challenging posture.

[0049] Once calibration is complete, the control unit 5 turns off all lights and proceeds to step 102 (step 203). From this state, the user 20 can start running and receive feedback on their running form. The calibration method is not particularly limited. Also, as will be described later, it is possible to use the device without performing calibration.

[0050] First, the control unit 5 determines whether the "acceleration" is above a threshold (step 102). That is, it determines whether the user 20 has experienced a landing impact of a predetermined level or higher. For example, if the "acceleration" is above the threshold of 10 m / s² 2 If the threshold is exceeded, it is determined that there has been a landing impact, and the system proceeds to step 104. The control unit 5 sets the PMW15 of the red light source 19d of the central light 17c according to the value of (acceleration - threshold) (step 104). In other words, the greater the landing impact, the higher the brightness of the red light source 19d is to make the central light 17c illuminate. If the landing impact is less than the threshold, the control unit 5 turns off the central light 17c (step 103).

[0051] Next, the control unit 5 determines whether a Ref setting value exists (step 105). As mentioned above, if calibration is performed before use, a Ref value is set, but if calibration is not performed, Ref is not set, so in this case, no feedback is given regarding the "pelvic anterior tilt angle," and the system proceeds to step 109.

[0052] If a Ref setting exists, the control unit 5 determines whether the current ("pelvic anterior tilt angle" - "Ref") is 0 or greater (step 105). That is, if the pelvic anterior tilt angle increases further than the reference pelvic anterior tilt, the PMW15 of the blue light source 19c of the central light 17c is set according to the value of ("pelvic anterior tilt angle" - "Ref") (step 108). In other words, if the pelvis is tilted more forward than the reference, the larger the angle, the higher the brightness of the blue light of the central light 17c. If ("pelvic anterior tilt angle" - "Ref") is less than 0 (i.e., tilted more backward than the reference), the control unit 5 turns off the blue light source 19c of the central light 17c (step 107).

[0053] Next, the control unit 5 reads the "angular velocity" (step 109). Here, the direction of the angular velocity is read with, for example, the left (counterclockwise) direction being positive. That is, when the waist (pelvis) rotates to the left (counterclockwise), the angular velocity takes a positive value, and when it rotates to the right (clockwise), the angular velocity takes a negative value.

[0054] The control unit 5 first determines whether the angular velocity is positive or negative (step 110). If it is positive, it proceeds to step 111; otherwise, it proceeds to step 112. In step 111 (i.e., when turning to the left), it sets the PMW15 of the right light 17a (green light source 19a) according to the angular velocity value. In step 112 (i.e., when turning to the right), it sets the PMW15 of the left light 17b (green light source 19b) according to the angular velocity value (absolute value). In other words, the greater the angular velocity in each turning direction, the brighter the light in the corresponding direction is made to emit light.

[0055] By repeating the above steps, it is possible to provide real-time feedback on the user's running form during running. In the above explanation, the pelvic anterior tilt angle at landing is evaluated and feedback is provided using the central light 17c (blue light source 19c), and then the blue light source 19c is turned off (step 103). However, the blue light source 19c may be kept on to reflect the pelvic anterior tilt at ground contact.

[0056] Figure 7 is a schematic diagram showing the form of feedback to the user in the above process. The state in Figure 7(a) is immediately after the left foot has pushed off the ground and just before the right foot makes contact with the ground. In this state, the user's left arm is extended forward and the pelvis rotates significantly to the right (clockwise). For example, if the user swings their left arm forward and simultaneously twists their pelvis significantly, a larger angular velocity is generated, causing the left light 17b (green light source 19b) to emit light at a high brightness. Therefore, for example, if the user's stride length decreases due to fatigue and their pelvis does not rotate sufficiently, the brightness decreases, allowing the user to understand that the rotation of their pelvis has decreased.

[0057] Figure 7(b) shows the state after landing on the right foot from the state in Figure 7(a). The impact at this time causes the red light source 19d of the central light 17c to light up. In this case, the greater the impact of the landing, the brighter the red light source 19d becomes. For example, if the impact cannot be properly dispersed when landing, or if a landing accompanied by strong braking is performed, the impact ("acceleration") will be greater, and the brightness of the red light source 19d will increase.

[0058] Furthermore, in this case, if the pelvic anterior tilt angle is more anterior than the standard posture, the blue light source 19c of the central light 17c will illuminate according to that angle, but if the posture is standard or posterior, the central light 17c will not illuminate. On the other hand, the optimal running form is a posture in which the pelvis is slightly tilted forward from a straight standing position. For this reason, it is desirable to maintain a state in which the blue light source 19c of the central light 17c is slightly illuminated.

[0059] Furthermore, when the blue light source 19c and the red light source 19d are illuminated simultaneously upon landing, the user can perceive the light as a mixed color (purple). In this case, the user can understand the pelvic tilt angle and the state of the landing impact based on the color (the intensity of red or blue). For example, if the user's pelvis tilts backward due to fatigue, the brightness of the blue light source 19c of the central light 17c decreases. As a result, the central light 17c becomes closer to red. Therefore, the user can understand that their posture and landing have changed based on the brightness and color of the central light 17c.

[0060] Figure 7(c) shows the state immediately after the right foot has finished pushing off the ground, and just before the left foot touches the ground, from the state shown in Figure 7(b). In this state, the user's right arm is extended forward, and the pelvis rotates significantly to the left (counterclockwise). For example, if the user swings their right arm forward and simultaneously twists their pelvis significantly, a larger angular velocity is generated, causing the right-side light 17a (green light source 19a) to emit light at a high brightness. Therefore, for example, if the user's stride length decreases due to fatigue, and at the same time the pelvis does not rotate sufficiently, the brightness decreases, allowing the user to understand that the rotation of the pelvis has decreased.

[0061] Figure 7(d) shows the state after landing on the left foot from the state shown in Figure 7(c). The impact at this time causes the red light source 19d of the central light 17c to illuminate. In this case, the greater the impact of the landing, the brighter the red light source 19d becomes. As mentioned above, in this case, the user can understand that their posture and landing have changed by the brightness and color of the central light 17c.

[0062] After Figure 7(d), the process returns to Figure 7(a), and the running motion and the illumination of each light are repeated. In this way, the user can perceive the four illumination states during one step of the running motion and understand their own running form in real time.

[0063] For example, when running while maintaining a consistent running form, each light will repeatedly turn on and off at the same brightness in a consistent rhythm. For instance, the lights will cycle in the following order: right green → center purple → left green → center purple → right green →... This allows the user to maintain a consistent rhythm of brightness and color while running, thereby suppressing variations in running form. For example, if fatigue disrupts the form, the changes in the light's flashing rhythm, brightness, and color will help the user recognize the change and attempt to return their body movements to their original state.

[0064] For example, by ensuring that the red light brightness does not become too high upon landing, the impact of landing can be suppressed. Also, by ensuring that the green light brightness of the left and right lights is sufficiently high, it becomes possible to rotate the pelvis while running, thereby improving running economy.

[0065] As described above, according to this embodiment, based on the signal from the sensor unit 3, the transmission unit 7 can transmit the magnitude of the information (angular velocity of the pelvis, impact of landing, anterior pelvic tilt angle) and the timing at which the information was obtained to the user 20 in real time, so that the user 20 can understand their own running form while road running.

[0066] In particular, based on signals from the sensor unit, the timing and magnitude of information obtained in real time can be communicated to the user through the illumination timing and brightness of the corresponding right-side light 17a, left-side light 17b, and center light 17c. Therefore, the user can grasp each piece of information through the light that enters their field of vision. As a result, the user can always grasp the information while looking ahead while driving.

[0067] For example, when the user rotates their pelvis to the left (counterclockwise), the right-side light 17a is illuminated, and the greater the rotation speed, the brighter the light source illuminates. When the user rotates their pelvis to the right (clockwise), the left-side light 17b is illuminated, and the greater the rotation speed, the brighter the light source illuminates. In this way, one light for each direction allows for the perception of both the rotational rhythm and the magnitude of the rotation.

[0068] Furthermore, the central light 17c is composed of at least two light sources of different colors (blue light source 19c and red light source 19d) integrated into one unit. In this configuration, the red light source 19d is illuminated upon landing, and the greater the impact, the brighter the red light source 19d illuminates. Simultaneously, the greater the user's pelvic anterior tilt angle, the brighter the blue light source 19c illuminates. In this way, the user can see the mixed light of the two light sources in the central light 17c. Therefore, information on the timing of landing, the magnitude of the landing impact, and the pelvic anterior tilt angle can be grasped from a single central light 17c.

[0069] Thus, according to this embodiment, more information can be easily transmitted to the user 20 while they are running with a minimal configuration. For example, if various information is displayed on a mobile device or wristwatch as in the conventional method, the user must lower their gaze to check it while running, and if the information is presented numerically or graphically, there is too much information, making it difficult to understand. Also, simply using sound to notify the user of abnormal running tempo or posture requires setting various data in advance, and it does not allow the user to understand how to correct a broken form.

[0070] According to this embodiment, even beginners with little knowledge, or especially middle-aged and elderly runners, can, by being conscious of their hip rotation, cause the left and right lights to illuminate with greater brightness, and this information is fed back to them. By adjusting their running form so that the left and right lights illuminate brightly and rhythmically, they can naturally run with the correct posture.

[0071] As mentioned above, the transmission unit 7 may be sound instead of light. In this case, for example, the timing and magnitude of various information may be expressed by the timing of sound generation, pitch, and volume. Furthermore, the type of information may be changed by timbre and pitch. For example, the timbre of the transmitted sounds for angular velocity and acceleration may be changed, with the pitch increasing as the speed increases for angular velocity, and the volume increasing as the acceleration increases for acceleration. In this case, by changing the pitch for landing impact and pelvic tilt, the magnitude of each piece of information can also be grasped by the difference in timbre (chord). The sound may be transmitted to the user using general earphones or the like via air vibration transmission, but bone conduction devices or the like may also be used.

[0072] On the other hand, by transmitting information through light, for example, when riding while listening to music, the information sounds will not be disruptive, and the lights can also function as safety lights when riding at night. Furthermore, if the light reflected from the user's body is visible from the outside, it can be used to check form after riding by recording a video of riding in dim light conditions. Note that the color of the light source of each light mentioned above is not limited to the embodiment. Also, for example, the information to be fed back can be narrowed down and used with only the left and right lights, or only the center light. In addition, other information may be transmitted to the user with additional lights, etc.

[0073] Furthermore, although the above embodiment described the improvement of running form, the same method can also be used to improve walking form during walking.

[0074] Preferred embodiments of the present invention have been described above with reference to the attached drawings, but the present invention is not limited to these examples. It will be obvious to those skilled in the art that various modifications or alterations can be conceived within the scope of the technical idea disclosed herein, and these will naturally also fall within the technical scope of the present invention. [Explanation of Symbols]

[0075] 1. Exercise form feedback device 3…Sensor section 5... Control Unit 7…Communication Department 9...Sensor 11… Microprocessor 13... Brightness adjustment section 15………PMW 17a... Right-side headlight 17b... Left side light 17c... Central Light 19a, 19b……green light source 19c……Blue light source 19d……Red light source 20……User 21……hat

Claims

1. An exercise form feedback device that can provide feedback to the user on their running or walking form, A sensor unit having at least one sensor capable of detecting the rotation of the user's pelvis, and two sensors in mutually orthogonal directions capable of detecting the user's landing impact and pelvic anterior tilt angle, A transmission unit that transmits the information detected by the sensor unit to the user, A control unit that controls the transmission unit, It is equipped with, The control unit is characterized in that, based on the signal from the sensor unit, it can transmit the magnitude of the information and the timing at which the information was obtained to the user in real time via the transmission unit.

2. The aforementioned transmission unit consists of multiple lights, The exercise form feedback device according to claim 1, characterized in that the control unit can transmit the timing and magnitude of information obtained in real time based on the signal from the sensor unit to the user by the timing and brightness of the corresponding light.

3. The exercise form feedback device according to claim 2, characterized in that it has a brightness adjustment unit capable of adjusting the maximum brightness of multiple lights.

4. The exercise form feedback device according to claim 2, characterized in that at least three lights are used, the first light indicates information on the user's pelvic rotation speed in the counterclockwise direction, the second light indicates information on the user's pelvic rotation speed in the clockwise direction, and the third light indicates information on the impact of landing and the pelvic anterior tilt angle.

5. The exercise form feedback device according to claim 4, wherein the third light is configured by integrating at least two light sources of different colors, the control unit causes one of the light sources to emit light upon landing, and the greater the impact, the brighter the light source of the one light source emits light, and the greater the user's pelvic anterior tilt angle, the brighter the light source of the other light source emits light, and the user can see the mixed light of the two light sources in the third light.

6. The control unit is characterized in that it causes the light source of the first light to emit light when the user rotates their pelvis in a counterclockwise direction, and the light source to emit light more brightly as the rotation speed increases, and causes the light source of the second light to emit light when the user rotates their pelvis in a clockwise direction, and the light source to emit light more brightly as the rotation speed increases, as described in claim 4.

7. The motion form feedback device according to claim 1, characterized in that the sensor for detecting the pelvic anterior tilt angle is capable of calibration by setting the pelvic anterior tilt angle at a predetermined time to zero after detecting a pelvic anterior tilt of an angle greater than or equal to a predetermined angle, in order to perform an initial setting of the angle relative to the ground in the sagittal plane.

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