COP-based Feature Extraction and Analysis of Plantar Pressure in Tai Chi Stake

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COP-based Feature Extraction and Analysis of Plantar Pressure in Tai Chi Stake

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[1]WAN Hong,GU Zhi yuan,LI Mengmeng.COP-based Feature Extraction and Analysis of Plantar Pressure in Tai Chi Stake[J].Journal of Zhengzhou University (Engineering Science),2024,45(pre):2-.[doi:10.13705/j.issn.1671-6833.2025.01.016]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 45 Number of periods: 2024 pre Page number: 2- Column: Public date: 2024-11-30

Title:: COP-based Feature Extraction and Analysis of Plantar Pressure in Tai Chi Stake

Author(s):: WAN Hong1; 2; GU Zhi yuan1; 2; LI Mengmeng1; 2; (1. School of Electrical and Information Engineering, Zhengzhou University, Zhengzhou 45000 1, China; 2. Henan Key Laboratory of Brain Science and Brain-Computer Interface Technology, Zhengzhou 45000 1, China)

Keywords:: Tai Chi Stake; Plantar pressure; Center of pressure; Feature extraction; Sample entropy

CLC:: R318

DOI:: 10.13705/j.issn.1671-6833.2025.01.016

Abstract:: To explore the inherent characteristics of Tai Chi Stake training and digitally interpret its movement essentials, effective plantar pressure detection equipment was used to collect plantar pressure signals from participants, and the relative position, time-domain, frequency-domain, and regularity indicators of the center of pressure (COP) movement between the expert group and the trainee group were compared and analyzed. The results show that the relative position of COP of the expert group is closer to 50% compared to the trainee group. In terms of time-domain indicators, the root mean square of COP movement of the expert group is significantly larger than that of the trainee group in both the left -right and front-back directions, while the frequency-domain peak frequency of the movement is significantly lower than that of the trainee group in both directions. For the sample entropy analysis of COP that measures the regularity, the expert group showed significantly lower values in both the left-right and front-back directions compared to the trainee group. These results indicate that the Tai Chi Stake COP of the expert group is more concentrated in the central position, reflecting the technical essential of " stand straight and be centered". The regular low-frequency adjustment reflects the characteristic of " motion in quiescence" in Tai Chi Stake

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Last Update: 2024-10-10