Hamstring muscles' function deficit during overground sprinting in track and field athletes with a history of strain injury
Hamstring muscles' function deficit during overground sprinting in track and field athletes with a history of strain injury
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DOI：
10.1080/02640414.2019.1664030
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发表时间：
2019-09-07
影响因子：
3.4
通讯作者：
Hirose, Norikazu
中科院分区：
文献类型：
--
作者：
Higashihara, Ayako;Ono, Takashi;Hirose, Norikazu
本研究旨在阐明有拉伤病史的田径运动员在短跑过程中的神经肌肉功能、运动学和运动学特征。十名有单侧肌腱损伤史的男大学生短跑运动员在一条田径赛道上进行了最大努力的冲刺。记录股二头肌长头肌(BFlh)和臀大肌长头肌(Gmax)肌电活动及三维运动学数据。比较两组患者的肌电活动、骨盆前倾角、髋关节和膝关节角度及扭矩、BFlh的肌腱长度。短跑摆动后期患肢BFlh活性显著低于健侧(p<；0.05)。然而，GMAX的肌电活动在既往损伤的肢体和未受伤的肢体之间没有显著差异。此外，在挥杆后期，受伤肢体的膝关节屈曲角度显著增加(p<；0.05)，BFlh肌肉长度明显缩短(p<；0.05)。结论是，与未受伤的对侧肌肉相比，在短跑摆动后期，先前受伤的腿筋肌显示出功能缺陷。
In this study, we aimed to clarify the characteristics of neuromuscular function, kinetics, and kinematics of the lower extremity during sprinting in track and field athletes with a history of strain injury. Ten male college sprinters with a history of unilateral hamstring injury performed maximum effort sprint on an athletic track. The electromyographic (EMG) activity of the long head of the biceps femoris (BFlh) and gluteus maximus (Gmax) muscles and three-dimensional kinematic data were recorded. Bilateral comparisons were performed for the EMG activities, pelvic anterior tilt angle, hip and knee joint angles and torques, and the musculotendon length of BFlh. The activity of BFlh in the previously injured limb was significantly lower than that in the uninjured limb during the late-swing phase of sprinting (p < 0.05). However, the EMG activity of Gmax was not significantly different between the previously injured and uninjured limbs. Furthermore, during the late-swing phase, a significantly more flexed knee angle (p < 0.05) and a decrease in BFlh muscle length (p < 0.05) were noted in the injured limb. It was concluded that previously injured hamstring muscles demonstrate functional deficits during the late swing phase of sprinting in comparison with the uninjured contralateral muscles.