Hamstring Functions During Hip-Extension Exercise Assessed With Electromyography and Magnetic Resonance Imaging
Hamstring Functions During Hip-Extension Exercise Assessed With Electromyography and Magnetic Resonance Imaging
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DOI：
10.1080/15438627.2011.535769
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发表时间：
2011-01-01
影响因子：
2.4
通讯作者：
Fukubayashi, Toru
中科院分区：
文献类型：
--
作者：
Ono, Takashi;Higashihara, Ayako;Fukubayashi, Toru
本研究的目的是比较肌电图（EMG）和肌肉功能磁共振成像（mfMRI）在髋关节伸展运动中的腘绳肌募集模式。6名男性志愿者进行了5组10次重复的髋关节伸展运动。记录运动过程中股二头肌长头（BFlh）、半腱肌（ST）和半膜肌（SM）肌肉的肌电图（EMG）活动;测量静息时、运动后立即、运动后2天和7天相同肌肉的mfMRI T2值和横截面积（CSA）。研究发现，BFlh和SM的EMG值均显著高于ST。运动后即刻，SM的T2值和CSA变化均呈显著性增加。结论是在髋关节伸展运动期间选择性地招募BFlh和SM。
The purpose of this study was to compare the recruitment patterns in hamstring muscles during hip extension exercise by electromyography (EMG) and muscle functional magnetic resonance imaging (mfMRI). Six male volunteers performed 5 sets of 10 repetitions of the hip extension exercise. Electromyography (EMG) activity during the exercise was recorded for the biceps femoris long head (BFlh), semitendinosus (ST), and semimembranosus (SM) muscles; mfMRI T2 values and cross-sectional areas (CSAs) of the same muscles were measured at rest, immediately after, 2 and 7 days after the exercise. The study found that EMG of the BFlh and SM were significantly higher than that of the ST. Immediately after the exercise, the T2 value and CSA changes in the SM showed a significant increase. It was concluded that the BFlh and SM were selectively recruited during the hip extension exercise.