Factors Affecting Trunk Fatigue and the Maximum Endurance Time of One-Leg Static Squat

Abstract—One-leg static squat is a classic movement of lower limb muscle strength training and functional rehabilitation of the lower limbs. It is often used in the fields of exercise and exercise rehabilitation. This study was designed to determine the effects of gender, leg used, and back support mode on the maximum endurance time (MET) and CR-10 score of trunk fatigue under the two experimental conditions. Thirty adults participated in the study. A three-factor (sex, support legs, back support mode) experiment was performed. Descriptive statistics, analysis of variance (ANOVA), and correlation analysis were performed. The results showed that gender (p<0.01), supporting leg (p<0.05), and gender×back support mode (p <0.01) were all significant on the MET. Gender (p<0.01) was significant on the CR-10 score. There was a significant difference in the supporting time between the left and right legs of males and females. Whether it was supported by the wall or the yoga ball, the trunk of the males was significantly higher than those of the females. The coordination ability of the males' trunk and lower limbs was significantly different.