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.

What is claimed is: 
     
         1 . 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, the exercise analysis method comprising:
 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.   
     
     
         2 . The exercise analysis method according to  claim 1 ,
 wherein the exercise is a swing performed using an exercise tool, and   wherein the measurement target is a hitting portion of the exercise tool.   
     
     
         3 . The exercise analysis method according to  claim 2 ,
 wherein the first position is a position of the hitting portion of the exercise tool before the beginning of the swing.   
     
     
         4 . The exercise analysis method according to  claim 2 ,
 wherein in the correcting of the exercise parameter, the exercise parameter is corrected based on a condition that a position of the hitting portion of the exercise tool at an immediately previous or immediately subsequent time of the beginning of the swing which is the first time point is the same as a position of the hitting portion of the exercise tool at a time of an impact which is the second time point.   
     
     
         5 . The exercise analysis method according to  claim 2 ,
 wherein in the correcting of the exercise parameter, the exercise parameter is corrected based on a condition that a position of the hitting portion of the exercise tool at an immediately previous or immediately subsequent time of the beginning of the swing which is the first time point is the same as a position of the hitting portion of the exercise tool at an immediately previous time of an impact which is the second time point.   
     
     
         6 . The exercise analysis method according to  claim 1 ,
 wherein the exercise parameter is position information.   
     
     
         7 . The exercise analysis method according to  claim 1 ,
 wherein the exercise parameter is velocity information.   
     
     
         8 . An exercise analysis device that analyzes, 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, the exercise analysis device comprising:
 a correction unit that corrects 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   an analysis unit that analyzes the exercise using the exercise parameter after the correction.   
     
     
         9 . The exercise analysis device according to  claim 8 ,
 wherein the exercise is a swing performed using an exercise tool, and   wherein the measurement target is a hitting portion of the exercise tool.   
     
     
         10 . The exercise analysis device according to  claim 9 ,
 wherein the first position is a position of the hitting portion of the exercise tool before the beginning of the swing.   
     
     
         11 . The exercise analysis device according to  claim 9 ,
 wherein the correction unit corrects the exercise parameter based on a condition that a position of the hitting portion of the exercise tool at an immediately previous or immediately subsequent time of the beginning of the swing which is the first time point is the same as a position of the hitting portion of the exercise tool at a time of an impact which is the second time point.   
     
     
         12 . The exercise analysis device according to  claim 9 ,
 wherein the correction unit corrects the exercise parameter based on a condition that a position of the hitting portion of the exercise tool at an immediately previous or immediately subsequent time of the beginning of the swing which is the first time point is the same as a position of the hitting portion of the exercise tool at an immediately previous time of an impact which is the second time point.   
     
     
         13 . The exercise analysis device according to  claim 8 ,
 wherein the exercise parameter is position information.   
     
     
         14 . The exercise analysis method according to  claim 8 ,
 wherein the exercise parameter is velocity information.   
     
     
         15 . An exercise analysis system comprising:
 the exercise analysis device according to  claim 8 : and   an inertial sensor.