Abstract: The exercise system includes a passive exercise device (10), an acceleration sensor (20), a posture evaluation device (30), and an indication device (40). The passive exercise device (10) is configured to allow a user (80) to perform a passive exercise. The acceleration sensor (20) is attached around the lower back of user (80), and is configured to measure accelerations respectively in three axial directions and output the measured accelerations to the posture evaluation device (30). The posture evaluation device (30) is configured to calculate, on the basis of the acceleration, a physical amount for evaluation of a posture of the user (80) performing the passive exercise, and make an evaluation of the posture of the user (80) by comparing the calculated physical amount with a predetermined reference value. The posture evaluation device (30) is configured to prepare, on the basis of the resultant evaluation, an exercise instruction for remediation of the posture of the user (80).

Abstract: A physical activity measuring system analyzes analyzing body motions of a user to accurately determine the exercise intensity. The system includes a portable device which is adapted to be carried by the user and is equipped with a body sensor and an indicator for indication of the exercise intensity. The body sensor senses the user's body motions to give corresponding motion strength. The portable device has a processor which constitutes an exercise calculator which has a predetermined relationship between a default standard deviation of the motion strength and an exercise intensity scale. The exercise intensity calculator collects a time series data of the motion strengths within a predetermined first time frame, obtains a standard deviation of thus collected motion strengths, and converting the standard deviation into an instant exercise intensity within the intensity scale in accordance with the predetermined relationship.

Abstract: A physical activity measuring system analyzes analyzing body motions of a user to accurately determine the exercise intensity. The system includes a portable device which is adapted to be carried by the user and is equipped with a body sensor and an indicator for indication of the exercise intensity. The body sensor senses the user's body motions to give corresponding motion strength. The portable device has a processor which constitutes an exercise calculator which has a predetermined relationship between a default standard deviation of the motion strength and an exercise intensity scale. The exercise intensity calculator collects a time series data of the motion strengths within a predetermined first time frame, obtains a standard deviation of thus collected motion strengths, and converting the standard deviation into an instant exercise intensity within the intensity scale in accordance with the predetermined relationship.

Abstract: This application involves the reform of the putting method. The main improvement is that the position of the ball has been changed to the left.

Abstract: An optical coupling device of the present invention includes: a light emitting device for converting an electric signal into an optical signal and outputting the optical signal; and a light receiving device for receiving the optical signal output from the light emitting device and converting the optical signal into the electric signal, wherein: the light emitting device has a light emitting surface for outputting the optical signal; the light receiving device has a light receiving surface for receiving the optical signal: and the light emitting device and the light receiving device are arranged so that the light emitting surface and the light receiving surface oppose each other, the optical coupling device further including: a first insulative substrate on which the light emitting device is mounted; and a second insulative substrate on which the light receiving device is mounted, wherein: the first insulative substrate has a first cross section; and the second insulative substrate has a second cross section;