Thépaut-Mathieu C, Van Hoecke J, Maton B
Laboratoire de Biomécanique, Institut National Supéricur d'Education Physique, Paris, France.
J Appl Physiol (1985). 1988 Apr;64(4):1500-5. doi: 10.1152/jappl.1988.64.4.1500.
Mechanical and neural activation changes that accompanied muscle isometric training were studied in males. Training and testing sessions consisted of right elbow isometric flexions. Each experimental group was trained during 5 wk at one of the following angles: 25, 80, and 120 degrees. Bipolar surface electromyogram (EMG) was recorded from the biceps brachii and brachioradialis muscles. An improvement of maximal voluntary contraction (MVC) was always found at the training angle and was systematically greater than at the other angles. Moreover, the shorter the muscle length at which the training has been carried out, the more the gain was limited to the training angle. An increase of the maximal integrated EMG of both biceps brachii and brachioradialis frequently accompanied the improvement of MVC at the training angle.
在男性中研究了伴随肌肉等长训练的机械和神经激活变化。训练和测试环节包括右肘等长屈曲。每个实验组在5周内于以下角度之一进行训练：25度、80度和120度。从肱二头肌和肱桡肌记录双极表面肌电图（EMG）。在训练角度总是能发现最大自主收缩（MVC）有所改善，且系统性地大于其他角度。此外，训练时肌肉长度越短，增益越局限于训练角度。肱二头肌和肱桡肌的最大积分EMG增加常常伴随训练角度处MVC的改善。
