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전완의 등척성 수축시 상대적인 중력토크를 고려한 근지구력시간 추정의 회귀모델
이기영(Kiyoung Lee),장지훈(Jihoon Jang),원종칠(Jongchil Won),이근용(Keunyong Lee),엄혁주(Hyokju Eum),이상식(Sangsik Lee) 대한전기학회 2019 전기학회논문지 Vol.68 No.10
Despite of muscle group and posture variability, regression model to estimate endurance time have mainly developed by using the percentage of maximum voluntary contraction (%MVC). This paper presented two regression models by using the relative load intensity %MVC and the relative gravitational torque ratio %GTR (gravitational torque ratio) as a prediction variable for the biceps brachii muscle, and compared these models with the existing models. Sixty volunteers (30 females, 30 males) participated in this study, and performed isometric contraction exercises at 6 relative load intensities from 30% to 80% of MVC increasing by 10%, respectively, until their exhaustion to determine endurance times. Two regression models were induced from two relations between the measured endurance times and %MVC and between those and %GTR, and compared with the existing models by their correlation, determinant coefficients (r2) and mean square errors (MSE). The results demonstrated that the presented models were valid to estimate muscle endurance time by using %GTR of the biceps brachii muscle.