Exercise analysis method, exercise analysis device, exercise analysis system, and program

Abstract

An exercise analysis method of analyzing, using an output of an inertial sensor, an exercise in which a measurement target locates at a first position at a first time point and the measurement target passes through the first position at a second time point includes: correcting an exercise parameter of the measurement target acquired from the output of the inertial sensor based on a difference between the first position at the first time point and the first position at the second time point; and analyzing the exercise using the exercise parameter after the correction.

Description

BACKGROUND[0001]1. Technical Field[0002]The present invention relates to analysis method, an exercise analysis device, an exercise analysis system and a program.[0003]2. Related Art[0004]JP-A-2008-73210 discloses a method of mounting a triaxial acceleration sensor and a triaxial gyro sensor on a golf club and measuring swing characteristics based on outputs of such inertial sensors. According to the method of JP-A-2008-73210, it is possible to considerably reduce a calculation amount more than when a video of a swing photographed by a camera is subjected to image processing and the swing is analyzed. According to the method of JP-A-2008-73210, a large-scale device such as a camera is not necessary. Therefore, there is no restriction on places in which users perform swings and convenience is high.[0005]When swing analysis is performed using outputs of inertial sensors, it is necessary to perform second-order integration on acceleration to calculate a position and it is necessary to p...

AI Technical Summary

Benefits of technology

The patent describes a program that uses an inertial sensor to measure the movement of a target during a physical exercise. The program corrects the measurements based on the fact that the target is at different positions in the actual exercise. This allows for a more accurate analysis of the exercise and the suggestions provided to the user are more accurate as well.

Problems solved by technology

However, an integration error increases due to an output error of the inertial sensor and an error of the position or the posture increases on the side of the second half of a swing.

For this reason, for example, when a head speed is calculated using calculated position information, an error of the calculation also increases.

This situation is not limited to a swing and the same problem also arises in exercises (for example, a circular exercise of a pedal when a bicycle is pedaled) in which the same position is passed at different time points.

However, it is actually difficult to accurately estimate an output error of a sensor.

Accordingly, in a method of the related art, it is difficult to provide exercise analysis information with high accuracy.

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