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역학 일 기반 근피로도 피팅 모델을 이용한 수영 시 유속의 영향 고찰
정진성(Jinsung Jung),고창훈(Changhun Ko),김종휘(Jonghwi Kim),김성용(Sung Yong Kim),김정(Jung Kim),김진환(Jinwhan Kim),박수경(Sukyung Park) 대한기계학회 2020 대한기계학회 춘추학술대회 Vol.2020 No.12
In this study, a mechanical work-based muscle fatigue fitting model is proposed through the correlation between muscle fatigue and the mechanical work of the joint model, and through the proposed model, I would like to confirm the results of previous studies that swimming in an open-water environment has a greater change in energy cost than swimming in a swimming pool environment. The proposed model showed an overall NRMS Error of about 13% and a R square value of about 0.5, and compared with the results of linear regression analysis, the NRMS Error of about 6% low and a R square value of about 0.3 high. In the proposed muscle fatigue fitting model, it was shown that the fatigue in the case of the external force due to the flow velocity increased faster than that in the case where the external force term due to the flow velocity was not present, and that the fatigue was about 0.75% faster after 2 minutes. From this, compared to the linear regression analysis, the proposed model is more suitable for modeling muscle fatigue. And the results of previous study was shown that fatigue is faster during open-water swimming.