슬라이드 레그 운동 시 경골 회전이 젊은 남녀의 햄스트링 근활성도에 미치는 영향

초록

This study aimed to investigate the effect of tibia rotation and gender on hamstring muscle activity during slide leg exercise. Twelve males (25.9±5.5 years, 81.8±5.5 kg, and 176.9±2.3 cm) and twelve females (21.5±1.1 years, 57.9±10.1 kg, and 161.8±6.5 cm) performed slide leg exercise with three different tibia rotations (internal, external, and neutral). Electromyography (EMG) data was collected from the biceps femoris and semitendinosus of the hamstring. Root mean square of EMG (RMS EMG) during maximal voluntary isometric contraction was used to normalize the RMS EMG across the three different tibia rotations of slide leg exercise. Two-way repeated measures was use to analyze the variance for each muscle. Tibia rotation during slide leg exercise had an effect on the semitendinosus (F2,44=4.714, p=.014). Contrasts revealed that internal rotation was significantly higher than external rotation (F1,22=10.36, p=.004). However, there was no such significant effect for the biceps femoris. Additionally, gender did not have a significant effect. Our results suggest that slide leg exercise in internal rotation can help selectively maximize the EMG activity of the semitendinosus. This study may help prevent hamstring injuries and aid in the development of more effective treatments.

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