Functional differences in the activity of the hamstring muscles with increasing running speed
Functional differences in the activity of the hamstring muscles with increasing running speed
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DOI：
10.1080/02640414.2010.494308
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发表时间：
2010-01-01
影响因子：
3.4
通讯作者：
Fukubayashi, Toru
中科院分区：
文献类型：
--
作者：
Higashihara, Ayako;Ono, Takashi;Fukubayashi, Toru
在这项研究中，我们研究了不同跑步速度下的腿筋肌肉激活，以帮助更好地了解每个腿筋肌肉的功能特征。8名健康男性田径运动员（20.1 +/-1.1岁）以最大速度的50%、75%、85%和95%进行跑步机跑步。计算髋关节和膝关节的下肢运动学。同时记录股二头肌和半腱肌的表面肌电活动。将跑步速度从85%增加到95%显著增加了挥杆后期腿筋肌肉的激活，而下肢运动学没有显著变化。在中间摆动阶段，在75%，85%和95%的跑步速度下，半腱肌的活动显著大于股二头肌。在95%最大跑中，股二头肌和半腱肌的峰值激活时间存在统计学显著差异（站立相P0.05，摆动后期P0.01）。随着跑步速度的增加，股二头肌和半腱肌的激活模式之间存在显着差异，表明在接近最大冲刺速度的跑步周期中发生了复杂的神经肌肉协调模式。
In this study, we examined hamstring muscle activation at different running speeds to help better understand the functional characteristics of each hamstring muscle. Eight healthy male track and field athletes (20.1 +/- 1.1 years) performed treadmill running at 50%, 75%, 85%, and 95% of their maximum velocity. Lower extremity kinematics of the hip and knee joint were calculated. The surface electromyographic activities of the biceps femoris and semitendinosus muscles were also recorded. Increasing the running speed from 85% to 95% significantly increased the activation of the hamstring muscles during the late swing phase, while lower extremity kinematics did not change significantly. During the middle swing phase, the activity of the semitendinosus muscle was significantly greater than that of the biceps femoris muscle at 75%, 85%, and 95% of running speed. Statistically significant differences in peak activation time were observed between the biceps femoris and semitendinosus during 95%max running (P0.05 for stance phase, P0.01 for late swing phase). Significant differences in the activation patterns between the biceps femoris and semitendinosus muscles were observed as running speed was increased, indicating that complex neuromuscular coordination patterns occurred during the running cycle at near maximum sprinting speeds.