Postural movement pattern and muscle action sequence associated with self-paced bilateral arm flexion during standing
Postural movement pattern and muscle action sequence associated with self-paced bilateral arm flexion during standing
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DOI：
10.2466/pms.104.1.327-334
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发表时间：
2007-02-01
影响因子：
1.6
通讯作者：
Tomita, Hidehito
中科院分区：
文献类型：
--
作者：
Fujiwara, Katsuo;Maeda, Kaoru;Tomita, Hidehito
研究受试者站立时双臂快速屈曲时体位肌的运动模式和动作顺序。手臂运动以受试者自己的速度开始。受试者为健康个体；48名男性和53名女性。根据足-腿（踝关节）和腿-干（髋关节）的运动角度对体位运动模式进行分类。记录前三角肌、股二头肌和竖脊肌肌电图。分析后两块肌肉与前三角肌动作开始的时间差异。男女踝关节和髋关节的运动角度呈相似的线性回归线分布(gamma=-2.092x - 2.552 （r=- 0.71）。体位运动模式根据分布分为髋屈（第二象限）、后倾（第三象限）和髋伸（第四象限）三种类型。髋屈曲型占26%，后倾型占55%，髋伸型占19%。股骨二头肌和竖脊肌的作用在后倾型和髋伸型中明显先于前三角肌，而在髋屈型中则没有。
Investigated were postural movement pattern and action sequence of Postural muscles while subjects rapidly flexed both arms during standing. The arm movement was started at the subject's own pace. Subjects were healthy individuals; 48 men and 53 women. Postural movement pattern was classified based on the movement angles of foot-leg (ankle joint) and leg-trunk (hip joint). Electromyograms were recorded from the anterior deltoid, biceps femoris, and erector spinae. The time difference between action onsets of the latter two muscles and the anterior deltoid was analyzed. Movement angles of the ankle and hip for both sexes were distributed on a similar linear regression line (gamma=-2.092x - 2.552 (r=-.71). The postural movement pattern was categorized based on the distribution into three types: hip flexion (in the 2nd quadrant), backward leaning (the 3rd), and hip extension (the 4th). The proportion of subjects was 26%, in the hip flexion type, 55%) in backward leaning type, and 19% in hip extension type. The action of biceps femoris and erector spinae significantly preceded that of anterior deltoid in the backward leaning and hip extension types but did not in the hip flexion type.