Walking training system, walking training method, and walking training program

Abstract

A walking training system according to an embodiment comprises a setting unit, a detection unit, and an output control unit. The setting unit sets a first exercise intensity necessary for achieving a walking goal of a user on the basis of the walking goal. The detection unit detects a second exercise intensity while the user is walking on the basis of the heart rate from a heart rate sensor attached to the user. The output control unit causes an output apparatus to output audiovisual information pertaining to the required manner of movement of the body so that the second exercise intensity matches the first exercise intensity.

Description

Gait training system, gait training method, and gait training program

[0001] The present invention relates to a gait training system, a gait training method, and a gait training program.

[0002] Walking (hereinafter, unless otherwise specified, includes running) is one of the most familiar sports. People walk for various purposes (e.g., maintaining health, losing weight, improving muscle strength). To help users walk at a pace suitable for their walking purpose, there are technologies that display the walking pace during walking, either after exercise or in real time (see, for example, Non-Patent Document 1, Non-Patent Document 2, or Non-Patent Document 3).

[0003] Naka Gotoda, Kenji Matsuura, Shinji Otsuka, Toshio Tanaka, and Yoneo Yano, "Web Training System to Support Self-Pace Adjustment of Running," Journal of the Society for Information and Systems in Education, Vol. 29, No. 3, 2012, pp. 152-164. "Asics Runmetrix," [online], [Retrieved May 14, 2024], Internet <URL: https: / / runmetrix.casio.com / jp / >. "Nike Run Club," [online], [Retrieved May 14, 2024], Internet <URL: https: / / www.nike.com / jp / nrc-app>.

[0004] However, simply showing the walking pace while walking does not allow the user to understand how to acquire an appropriate walking pace, for example, the user cannot understand how to move their body, such as when to place their feet on the ground or when to breathe.

[0005] An object of the present invention is to assist a user in learning a walking pace that is suitable for their walking purpose.

[0006] A walking training system according to an embodiment includes a setting unit, a detection unit, and an output control unit. The setting unit sets a first exercise intensity necessary to achieve a user's walking purpose based on the user's walking purpose. The detection unit detects a second exercise intensity while the user is walking based on a heart rate detected by a heart rate sensor attached to the user. The output control unit outputs, to an output device, audiovisual information related to a body movement required to match the second exercise intensity with the first exercise intensity.

[0007] According to the present invention, it is possible to support a user in learning a walking pace that is suitable for the walking purpose.

[0008] FIG. 1 is a configuration diagram of a walking training system. FIG. 2 is a configuration diagram of a control device. FIG. 3 is an explanatory diagram of an environment in which the walking training system is implemented. FIG. 4 is a flowchart of the operation of the walking training system. FIG. 5 is a flowchart of the presentation of a suitable walking pace. FIG. 6 is an explanatory diagram of walking purpose and walking quota. FIG. 7 is a graph of the time length of each movement section. FIG. 8 is an explanatory diagram of a method of presenting ground contact timing. FIG. 9 is an explanatory diagram of a method of presenting breathing timing.

[0009] An embodiment of the present invention will be described below with reference to the accompanying drawings. In this embodiment, multiple parts with the same reference numerals are considered to operate in the same manner, and redundant explanations will be omitted as appropriate. "Audiovisual information" includes at least one of "visual information" and "auditory information." "Visual information" includes images, videos, etc. "Auditory information" includes sounds, voices, etc.

[0010] 1 is a configuration diagram of a walking training system 1. The walking training system 1 is a system for training the walking of a user U. The walking training system 1 includes an HMD 11, a heart rate sensor 12, a treadmill 13, and a control device 14. The HMD 11, the heart rate sensor 12, and the treadmill 13 are connected to the control device 14 so as to be able to communicate with each other via wire or wirelessly.

[0011] The HMD 11 is a display (head-mounted display) that can be worn on the head of the user U. The HMD 11 outputs (or presents) visual information to the user U based on a control signal from the control device 14. The HMD 11 may be XR (cross reality) goggles. The HMD 11 is an example of an output device (particularly, a display device).

[0012] The HMD 11 according to this embodiment has a built-in speaker. The speaker outputs (or presents) auditory information to the user U based on a control signal from the control device 14. The speaker may be mounted on the heart rate sensor 12, the treadmill 13, the control device 14, or another device. The speaker is an example of an output device (particularly, an audio device).

[0013] The heart rate sensor 12 is a sensor that measures the heart rate of the user U. The heart rate sensor 12 is attached to any part of the body of the user U (e.g., chest, arm). The heart rate sensor 12 may have a shape that allows it to be worn on that part of the body (e.g., wristband type). The heart rate sensor 12 transmits the measured heart rate to the control device 14.

[0014] The treadmill 13 is an exercise machine for the user U to walk in a fixed position. The treadmill 13 controls the rotation speed of the belt based on a control signal from the control device 14.

[0015] The control device 14 is a device that controls the overall operation of the walking training system 1. The control device 14 controls the operation of the HMD 11 and the treadmill 13 based on the heart rate from the heart rate sensor 12. The control device 14 may be mounted on the HMD 11, the heart rate sensor 12, or the treadmill 13. The control device 14 may be an information processing device such as a computer. The control device 14 may be called a "walking training device."

[0016] 2 is a configuration diagram of the control device 14. The control device 14 includes, as its components, a processing circuit 141, a memory 142, and a communication device 143. The components are connected to each other via an internal bus so that they can communicate with each other.

[0017] The processing circuit 141 is a circuit that controls the overall operation of the control device 14. The processing circuit 141 has at least one processor. The processor may be a central processing unit (CPU), a graphics processing unit (GPU), an application specific integrated circuit (ASIC), a programmable logic device (PLD), etc. The PLD may be a simple programmable logic device (SPLD), a complex programmable logic device (CPLD), a field programmable gate array (FPGA), etc.

[0018] If the processor is a CPU, the CPU reads and executes various programs stored in the memory 142 to realize various functions. If the processor is an ASIC, the various functions are incorporated as logic circuits inside the ASIC. The processor may be configured as a single circuit or as a combination of multiple circuits. The processor realizes, as various functions, an acquisition unit 141A, a setting unit 141B, a detection unit 141C, an output control unit 141D, a speed control unit 141E, and a system control unit 141F.

[0019] The memory 142 is a device for storing various types of data. The memory 142 is a magnetic disk, a semiconductor memory, etc. The memory 142 stores various programs.

[0020] The communication device 143 is a device that communicates various data or control signals. The communication device 143 communicates with various components belonging to the walking training system 1.

[0021] 3 is an explanatory diagram of an environment 300 in which the walking training system 1 is implemented. In the environment 300, a user U wears an HMD 11 on his / her head and a heart rate sensor 12 on his / her chest while walking on a treadmill 13. The HMD 11, heart rate sensor 12, and treadmill 13 communicate wirelessly with a control device 14 in real time.

[0022] Specifically, the treadmill 13 includes a belt 131, two pulleys 132, a motor 133, and a handle 134. The belt 131 is wound around the two pulleys 132 to form a ring shape. The motor 133 rotates at least one of the pulleys 132 based on a control signal from the control device 14, thereby rotating the belt 131. Therefore, the user U can walk on the rotating belt 131 semi-permanently.

[0023] The user U may walk on the belt 131 while holding a handle 134 connected to a non-rotating portion of the treadmill 13. The user U can walk comfortably while supporting his or her own weight with the handle 134. Furthermore, the user U can walk safely without feeling anxious while the user cannot see the surrounding scenery, such as while visual information is displayed on the HMD 11.

[0024] The user U does not have to walk on the treadmill 13. The user U may walk while wearing the HMD 11 and the heart rate sensor 12 in a safe environment.

[0025] 4 is a flowchart showing the operation of the walking training system 1. Each component of the walking training system 1 executes the following steps S1 to S9.

[0026] (Step S1) First, the control device 14 acquires the walking purpose and walking quota. Specifically, the acquisition unit 141A acquires the purpose for which the user U is walking (walking purpose) and the target value for the walking (walking quota). For example, the user U uses an input device (e.g., a smartphone or a tablet terminal) to input the walking purpose and walking quota into the input device. The input device transmits the input information to the communication device 143. The communication device 143 transmits the received information to the acquisition unit 141A. The acquisition unit 141A may acquire the walking purpose and walking quota by any other method (see FIG. 6 ).

[0027] (Step S2) Next, the control device 14 sets a required exercise intensity based on the walking purpose. Specifically, the setting unit 141B sets an exercise intensity (first exercise intensity) required to achieve the walking purpose based on the walking purpose acquired in step S1. For example, the setting unit 141B sets an intensity of perceived exertion corresponding to a certain walking purpose based on a table that associates walking purposes with ratings of perceived exertion (RPE) (see FIG. 6 ).

[0028] (Step S3) Next, the control device 14 starts up the system. Specifically, the system control unit 141F starts up the HMD 11, heart rate sensor 12, and treadmill 13 that belong to the walking training system 1. After startup, the user U starts walking on the treadmill 13 with the HMD 11 attached to his head and the heart rate sensor 12 attached to his chest (see FIG. 3 ).

[0029] (Step S4) Next, the control device 14 acquires the heart rate from the heart rate sensor 12. Specifically, the acquisition unit 141A acquires the heart rate while the user U is walking on the treadmill 13. For example, the heart rate sensor 12 measures the heart rate for the past minute and transmits the measured heart rate to the communication device 143. The communication device 143 transmits the received heart rate to the acquisition unit 141A (see FIG. 7 ).

[0030] (Step S5) Next, the control device 14 detects the current exercise intensity based on the heart rate. Specifically, the detection unit 141C detects the exercise intensity (second exercise intensity) while the user U is walking on the treadmill 13 based on the heart rate acquired in step S4. For example, the detection unit 141C detects the average rate of perceived exertion (RPE) for the past minute based on the heart rate for the past minute (see FIG. 7 ).

[0031] (Step S6) Next, the control device 14 determines whether the current exercise intensity is appropriate. Specifically, the detection unit 141C determines whether the current exercise intensity (second exercise intensity) detected in step S5 matches the required exercise intensity (first exercise intensity) set in step S2. If the current exercise intensity is appropriate (step S6—YES), the process proceeds to step S8. If the current exercise intensity is not appropriate (step S6—NO), the process proceeds to step S7.

[0032] (Step S7) Next, the control device 14 presents an appropriate walking pace. For example, the control device 14 causes the HMD 11 to output audiovisual information regarding how to move the body required to match the current exercise intensity (second exercise intensity) with the required exercise intensity (first exercise intensity) (see FIG. 5).

[0033] (Step S8) Next, the control device 14 determines whether the walking quota has been achieved. Specifically, the detection unit 141C determines whether the walking quota acquired in step S1 has been achieved. The detection unit 141C may determine whether the distance or time related to the walking quota has been achieved based on operation information received from the treadmill 13 (e.g., the number of rotations of the belt 131 or pulley 132, or the measurement value of the time counter). If the walking quota has been achieved (step S8-YES), the process proceeds to step S9. If the walking quota has not been achieved (step S8-NO), the process returns to step S4.

[0034] (Step S9) Finally, the control device 14 stops the system. Specifically, the system control unit 141F stops the HMD 11, the heart rate sensor 12, and the treadmill 13 that belong to the walking training system 1. After stopping, the user U removes the HMD 11 and the heart rate sensor 12 and gets off the treadmill 13.

[0035] 5 is a flowchart showing the process of suggesting a suitable walking pace. The control device 14 executes the following steps S71 to S72C.

[0036] (Step S71) First, the control device 14 determines the magnitude of the absolute value V of the difference between the two exercise intensities. Specifically, the detection unit 141C detects the absolute value V of the difference between the current exercise intensity (second exercise intensity) and the required exercise intensity (first exercise intensity). If the detected absolute value V is 3 or greater (3≦V), the process proceeds to step S72A. If the detected absolute value V is 2 or greater but less than 3 (2≦V<3), the process proceeds to step S72B. If the detected absolute value V is 1 or greater but less than 2 (1≦V<2), the process proceeds to step S72C.

[0037] (Step S72A) Next, the control device 14 controls the speed of the treadmill 13. Specifically, the speed control unit 141E controls the rotational speed of the belt 131 of the treadmill 13 so that the current exercise intensity (second exercise intensity) matches the required exercise intensity (first exercise intensity). After step S72A, the process proceeds to step S8.

[0038] When the rate of perceived exertion (RPE) is changed by 3 or more, the speed control unit 141E changes the rotation speed of the belt 131 by 1 km / h or more. In particular, the speed control unit 141E may change the rotation speed so that it does not fall below the minimum speed for each walking style. When the walking style is "walking", the speed control unit 141E may change the rotation speed so that it does not fall below "2 km / h". When the walking style is "running", the speed control unit 141E may change the rotation speed so that it does not fall below "4 km / h".

[0039] (Step S72B) Subsequently, the control device 14 presents the ground contact timing through the HMD 11. Specifically, the output control unit 141D causes the HMD 11 to output audiovisual information indicating the timing at which the user U puts their foot down (ground contact timing). After step S72B, the process proceeds to step S8.

[0040] When changing the rate of perceived exertion (RPE) by about 2, the output control unit 141D changes the tempo of the sound by about 10 beats per minute (bpm). The output control unit 141D transmits a control signal to the HMD 11 to play sound at the changed tempo. The HMD 11 plays sound at a predetermined tempo based on the received control signal. The sound to be played may be a voice saying "1 (one), 2 (two), 1 (one), 2 (two)" or an electronic sound such as "beep, beep, beep, beep." The sound to be played is synchronized with the timing when one foot touches the ground and the other foot touches the ground.

[0041] The output control unit 141D may transmit a control signal for displaying an image indicating the ground contact timing to the HMD 11. The HMD 11 displays the image based on the received control signal. The HMD 11 may alternately display two images indicating the ground contact timing in synchronization with the tempo of the sound being played (see FIG. 8 ).

[0042] (Step S72C) Subsequently, the control device 14 presents the breathing timing through the HMD 11. Specifically, the output control unit 141D causes the HMD 11 to output audiovisual information indicating the timing (breathing timing) of the user U's breathing. After step S72C, the process proceeds to step S8.

[0043] When changing the rate of perceived exertion (RPE) by about 1, the output control unit 141D changes the number of breaths per minute by about 2. The output control unit 141D sends a control signal to the HMD 11 to play sound at a tempo that matches the changed number of breaths. The HMD 11 plays sound at a predetermined tempo based on the received control signal. The sound that is played may be a voice saying "inhale, exhale, inhale, exhale" or an electronic sound that sounds like "beep, beep, beep, beep." The sound that is played is synchronized with the number of breaths and the length of the breaths.

[0044] The output control unit 141D may transmit a control signal for displaying an image indicating breathing timing to the HMD 11. The HMD 11 displays the image based on the received control signal. The HMD 11 may alternately display two images indicating breathing timing in synchronization with the tempo of the sound being played (see FIG. 9 ).

[0045] 6A and 6B are explanatory diagrams relating to walking purposes and walking quotas. FIG. 6A shows the correspondence between a walking purpose table 610 and an RPE table 620. The walking purpose table 610 and the RPE table 620 are stored in the memory 142. The walking purpose table 610 and the RPE table 620 may be integrated into a single table. FIG. 6B shows an input screen 630 for a walking quota. The input screen 630 is displayed on an input device operated by the user U. The input screen 630 may further include a box for inputting the walking purpose.

[0046] As shown in FIG. 6A, the walking purpose table 610 includes multiple values ​​related to walking purposes (e.g., walking fast, walking long, walking comfortably). The RPE table 620 includes multiple values ​​related to RPE and subjective evaluation. RPE is defined in the range of 7 to 19. The subjective evaluation qualitatively indicates the degree of fatigue perceived by the user U at that RPE.

[0047] Various walking purposes in the walking purpose table 610 are associated with a predetermined range of RPE in the RPE table 620. For example, "walk fast" is associated with an RPE range of "15 to 17." "walk long" is associated with an RPE range of "11 to 13." "walk comfortably" is associated with an RPE range of "7 to 9."

[0048] The setting unit 141B sets an RPE corresponding to a certain walking purpose based on the above association. For example, if the walking purpose is "walking comfortably," the setting unit 141B sets an RPE range of "7 to 9."

[0049] 6(B), the input screen 630 includes three boxes 631, 632, and 633 for inputting values ​​for three items (mode, distance, and time) related to the walking quota. The user U inputs "walk" or "run" in the box 631. The user U inputs a desired distance (e.g., 5 km) in the box 632. The user U inputs a desired time (e.g., 30 minutes) in the box 633.

[0050] That is, the user U can specify any walking quota by inputting values ​​into three boxes 631, 632, and 633 on the input screen 630. The control device 14 presents an appropriate walking pace so as to maintain the RPE range corresponding to the user U's walking purpose until the specified walking quota (particularly, distance or time) is achieved.

[0051] 7 is a graph 700 showing the duration of each movement section. The graph 700 shows the duration of four movement sections (walking section, warm-up section, heart rate acquisition section, and pace presentation section) during the 10 minutes from system startup (step S3) to system shutdown (step S9). The duration of each section is indicated by bands p1 to p44.

[0052] The walking section is a section in which the user U walks. As shown in band p1, the walking section is "0 to 10" minutes.

[0053] The warm-up section is a section in which the user U warms up. The warm-up section is set regardless of the walking quota specified by the user U. As shown in band p2, the warm-up section is "0 to 2" minutes.

[0054] The speed control unit 141E may control the speed of the treadmill 13 in the warm-up section to a default speed based on the walking style set as the walking quota. When the walking style is "walking," the speed control unit 141E controls the speed of the treadmill 13 to "4 km / h." At this time, the tempo of the ground contact timing is "83 bpm." When the walking style is "running," the speed control unit 141E controls the speed of the treadmill 13 to "8 km / h." At this time, the tempo of the ground contact timing is "166 bpm."

[0055] The heart rate acquisition interval is an interval during which the control device 14 acquires the heart rate from the heart rate sensor 12 (step S4). The heart rate acquisition interval is set alternately with the pace presentation interval. As shown in bands p31, p32, p33, and p34, the heart rate acquisition intervals are "2 to 3" minutes, "4 to 5" minutes, "6 to 7" minutes, and "8 to 9" minutes.

[0056] The pace indication section is a section in which the control device 14 indicates a suitable walking pace (step S7). The pace indication section is set following the heart rate acquisition section. As shown in bands p41, p42, p43, and p44, the pace indication sections are "3 to 4" minutes, "5 to 6" minutes, "7 to 8" minutes, and "9 to 10" minutes.

[0057] That is, after the warm-up section, the control device 14 alternately repeats a one-minute heart rate acquisition section and a one-minute pace indication section. The control device 14 detects the exercise intensity (second exercise intensity) for that section based on the heart rate acquired during the heart rate acquisition section. If the detected exercise intensity is appropriate (step S6—YES), the control device 14 does not present an appropriate walking pace during the subsequent pace indication section. Instead, the control device 14 may present audiovisual information indicating that the current walking pace is appropriate. If the detected exercise intensity is not appropriate (step S6—NO), the control device 14 presents an appropriate walking pace during the subsequent pace indication section (step S7).

[0058] 8A and 8B are explanatory diagrams relating to a method of presenting ground contact timing. Fig. 8A shows an image 810 indicating the ground contact timing of the left foot. Fig. 8B shows an image 820 indicating the ground contact timing of the right foot. The two images 810 and 820 are displayed alternately on the HMD 11.

[0059] 8A, image 810 displays a footprint 811 representing the left foot in front of and to the left of the foot of actual user U. In other words, image 810 is an augmented reality (AR) image in which footprint 811 is synthesized with an image of the real world.

[0060] 8B, image 820 displays a footprint graphic 821 representing the right foot in front of the right of the foot of the actual user U. Image 820 is an augmented reality (AR) image similar to image 810.

[0061] 9A and 9B are explanatory diagrams relating to a method of presenting breathing timing. Fig. 9A shows an image 910 that is displayed when the user U finishes inhaling. Fig. 9B shows an image 920 that is displayed when the user U finishes exhaling. The two images 910 and 920 are displayed alternately on the HMD 11.

[0062] 9A, an image 910 displays an inflated object 911. The object 911 includes a large number of particles dispersed in a spherical shape.

[0063] 9B, an image 920 displays an object 921 in a contracted state. The object 921 includes a large number of particles, similar to the object 911. The object 921 includes a large number of particles aggregated in a smaller area, and therefore has a smaller size than the object 911.

[0064] A plurality of images may exist between the two images 910 and 920. The plurality of images continuously show how the object 911 gradually shrinks and changes into the object 921. From another perspective, the plurality of images continuously show how the object 921 gradually expands and changes into the object 911. The HMD 11 may display the plurality of images (i.e., videos) in synchronization with the breathing timing of the user U.

[0065] According to the embodiment described above, the walking training system 1 (particularly the control device 14) sets a first exercise intensity necessary to achieve the walking purpose of the user U, based on the walking purpose of the user U. The walking training system 1 detects a second exercise intensity while the user U is walking, based on the heart rate from the heart rate sensor 12 attached to the user U. The walking training system 1 outputs, to the output device, audiovisual information related to the body movement required to match the second exercise intensity with the first exercise intensity.

[0066] Based on the output audiovisual information, the user U can visually or audibly understand how to move their body. For example, the user U can understand how to move their body, such as when to place their feet on the ground or when to breathe. Therefore, the walking training system 1 can help the user U learn a walking pace that is appropriate for their walking purpose.

[0067] Furthermore, the walking training system 1 may change the type of audiovisual information depending on the magnitude of the difference between the second exercise intensity and the first exercise intensity (particularly the magnitude of the absolute value V). For example, when the difference between the second exercise intensity and the first exercise intensity is somewhat large (2≦V<3), the walking training system 1 presents audiovisual information indicating the ground contact timing.

[0068] It is assumed that changing the ground contact timing rather than the breathing timing is more reasonable in order to make a greater change to the second exercise intensity. Based on this assumption, the walking training system 1 presents audiovisual information indicating the ground contact timing to the user U via the output device. Therefore, the walking training system 1 can assist the user U in learning a rational way to move their body.

[0069] Furthermore, when the user U is walking on the treadmill 13, the walking training system 1 may control the speed of the treadmill 13 so that the second exercise intensity matches the first exercise intensity. In particular, the walking training system 1 may control the speed of the treadmill 13 when the difference between the second exercise intensity and the first exercise intensity is relatively large (3≦V).

[0070] It is assumed that in order to make a greater change to the second exercise intensity, it is more reasonable to change the speed of the treadmill 13 rather than suggesting ground contact timing or breathing timing. Based on this assumption, the walking training system 1 changes the speed of the treadmill 13 so that the second exercise intensity matches the first exercise intensity. It is expected that the user U will acquire a ground contact timing or breathing timing that is realistically possible at the changed speed. Therefore, the walking training system 1 can support the user U in acquiring a rational way of moving their body.

[0071] Each embodiment of the present invention is presented as an example and does not limit the scope of the present invention. Each embodiment can be implemented in various forms without departing from the spirit of the present invention. Each embodiment may be combined with other embodiments, and in such cases, combined effects can be obtained. Each embodiment includes multiple components, and various combinations of these multiple components can result in various inventions. Each embodiment or combination of each component is included within the scope of the present invention.

[0072] 1...gait training system, 11...HMD, 12...heart rate sensor, 13...treadmill, 14...control device, 131...belt, 132...pulley, 133...motor, 134...handle, 141...processing circuit, 141A...acquisition unit, 141B...setting unit, 141C...detection unit, 141D...output control unit, 141E...speed control unit, 141F...system control unit, 142...memory, 143...communication device, 300...environment, 610...gait purpose table, 620...RPE table, 630...input screen, 631, 632, 633...box, 700...graph, 810, 820, 910, 920...image, 811, 821...footprint figure, 911, 921...object, U...user, V...absolute value

Claims

1. A walking training system comprising: a setting unit that sets a first exercise intensity required to achieve a user's walking purpose based on the user's walking purpose; a detection unit that detects a second exercise intensity while the user is walking based on the heart rate from a heart rate sensor attached to the user; and an output control unit that outputs audiovisual information to an output device regarding how to move the body required to match the second exercise intensity to the first exercise intensity.

2. The gait training system according to claim 1, wherein the audiovisual information indicates the timing at which the user's feet touch the ground.

3. The gait training system according to claim 1, wherein the audiovisual information indicates when the user should breathe.

4. The walking training system according to claim 1, wherein the output control unit changes the type of the audiovisual information based on the magnitude of the difference between the second exercise intensity and the first exercise intensity.

5. The walking training system of claim 1, further comprising: a speed control unit that controls the speed of the treadmill so that the second exercise intensity is the exercise intensity while the user is walking on a treadmill, and the second exercise intensity is equal to the first exercise intensity.

6. A walking training method, in which a computer sets a first exercise intensity required to achieve a user's walking purpose based on the user's walking purpose, detects a second exercise intensity while the user is walking based on the heart rate from a heart rate sensor attached to the user, and outputs audiovisual information to an output device regarding how to move the body required to match the second exercise intensity with the first exercise intensity.

7. A walking training program that causes a computer to function as each part of the walking training system described in claim 1.

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