松田, 柊斗, 平野, 智也, 古田, なつみ, 木内, 聖, 藤戸, 靖則, 山本, 智貴, 増本, 達哉, 熊川, 大介, 船渡, 和男
体育・スポーツ科学研究 24 27-36 2025年3月31日 査読有り
This study aimed to determine the cause of the sticking region (SR) that occurs in the back squat (BS) from biomechanical analysis. Six male college weightlifters (age:20.5±2.2 years, height:173.4±7.6 cm, weight:79.3±16.9 kg, 1RM:149±27.4 kg) performed one rep. with different loads (0, 30, 50, 70, 90, 100% 1RM) and BS without counter movement (0, 30, 50, 70, 90%1RM) for one rep. followed by BS exhaustion trial at 70%1RM. We calculated barbell velocity, joint angles, angular velocity, moments, and power in the lifting phase. Identification of SR became more pronounced with increased loading. In SR phase during BS, ankle plantar flexion angular velocity and power and knee joint extension angular decreased. On the other hand, knee joint extension power decreased in the middle phase. These results suggest that the appearance of SR might be related to moment and power attenuations in knee joint during BS exercise.