Development of a wide range motion capture system capable of kinetic analysis

• Project/Area Number: 26702024
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Sports science
• Research Institution: The University of Tokyo
• Principal Investigator: YOSHIOKA Shinsuke 東京大学, 大学院総合文化研究科, 准教授 (20512312)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000); Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2014: ¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
• Keywords: motion capture / kinetics / IMU / ground reaction force / 疲労動作計測 / 広範囲動作計測 / パラメータ推定 / 動力学計算 / ジャイロセンサ / 校正 / 慣性センサ / モーションキャプチャ / 屋外計測

Outline of Final Research Achievements

The purpose of this study was to develop a wide range motion capture system capable of kinetic analysis. This study is based on the previous study (the development of a wide range motion capture system with MEMS inertia sensors) and consisted of three sub studies (1: Improvement of inertial measurement unit, 2: Estimation of body inertial properties and 3: Application to 100 m sprint running and evaluation of the method developed in the current study). It was revealed that ground reaction force can be estimated under small impact condition. Additionally, it was suggested that the estimation of COP was difficult because of some factors such as measurement error, and modeling error. The advantage of the method developed is that kinetic data can be obtained without additional sensors.