Quick Feedback of Snatch Technique Based on Infrared Motion Capture System

Objective:The aim of this study is to develop a quick feedback system for snatch technique based on infrared motion capture system.Methods:the real-time 3D kinematics data of markers and GRF signals were collected synchronously with VICON system and imported to motion pattern identify procedure.After all markers were identified and all data gaps were filled with cube spine interpolation,the 3D stick figure and a series of technique parameters during snatching is presented by quick feedback system directly.Results:the feedback test on 20 trials of two elite weightlifters shows the quick feedback system developed in this study can identify the snatch action accurately just in few seconds and meet the need of training practice quite well.Conclusions:Developing a quick feedback system based on infrared motion capture system is a practicable and worth promoting solution for motion analysis.