TRAINING EFFECTS OF SUB-MAXIMAL ELECTROSTIMULATION IN A HUMAN-MUSCLE
TRAINING EFFECTS OF SUB-MAXIMAL ELECTROSTIMULATION IN A HUMAN-MUSCLE
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DOI：
10.1249/00005768-198802000-00015
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发表时间：
1988-02-01
影响因子：
4.1
通讯作者：
HAINAUT, K
中科院分区：
文献类型：
--
作者：
DUCHATEAU, J;HAINAUT, K
本文比较了6周的亚极量电刺激训练（100 Hz）和随意收缩训练对正常人拇内收肌收缩特性的影响。在最大自主收缩和电诱发收缩中测试的所观察到的肌肉力量的增加在电刺激期间似乎显著小于在通过自主收缩进行的训练期间。电刺激过程中记录的力的增加与张力发展和张力松弛的强直率（dP 0/dt）的变化无关。相反，发现通过自主收缩训练的肌肉的破伤风时程显着加速。在两种训练程序中均未观察到表面动作电位总面积的变化。此外，电刺激并不能改善肌肉对疲劳的抵抗力，据观察，在训练后，通过随意收缩，肌肉对疲劳的抵抗力显著增加。这项研究表明，电刺激通过改变与细胞内事件相关的外周过程来增强肌肉收缩力，而不修改收缩的神经命令。通过电刺激和自主收缩记录的次最大训练期间的外周变化的比较表明，电刺激是效率较低的，但补充自主训练，因为在两个程序中训练的运动单位的数量和类型是不同的。
This paper compares the effects of 6 wk of sub-maximal training by electrostimulation (100 Hz) and voluntary contractions on the contractile properties of the adductor pollicis muscle in intact man. The daily training program consisted of ten series of twenty 1-s isotonic contractions (60 to 65% of maximum) separated by 1-s intervals. The observed increase in muscle force, tested in maximal voluntary and electrically evoked contractions, appears to be significantly smaller during electrostimulation than during a training session performed by voluntary contractions. The increase in force recorded during electrostimulation is not associated with changes in the tetanus rates of tension development and tension relaxation (dP0/dt). Conversely, the tetanus time course is found to be significantly accelerated in muscles trained by voluntary contractions. No change of the surface action potential total area was observed during both training procedures. Furthermore, electrostimulation does not improve muscle resistance to fatigue, which is observed to be significantly increased after training by voluntary contractions. This study indicates that electrostimulation augments the muscle force of contraction by changing peripheral processes associated with intra-cellular events, without modifying the nervous command of the contraction. The comparison of the peripheral changes recorded during sub-maximal training by electrostimulation and voluntary contractions suggest that electrostimulation is less efficient, but complementary to voluntary training because the number and the type of trained motor units are different in the two procedures.