抗负荷力量训练中应用电刺激对肌力及FT％的影响

以１８名男性运动员为研究对象，随机分为对照组（Ⅰ）与实验组（Ⅱ），进行下肢抗负荷力量训练。实验组进行力量训练的同时，对受试者股四头肌实施电刺激。实验前后对受试者进行６０°／ｓ、２４０°／ｓ的等速肌力矩测试和ＦＴ％的无损伤测定。据测试，对照组６０°／ｓ、２４０°／ｓ等速伸膝肌力矩以及ＦＴ％分别提高５．７２％、７．７１％（Ｐ＜０．０１）和２．５０％（Ｐ＞０．０５）；实验组相应值分别为８．６０％、１１．２３％（Ｐ＜０．０１）和８．９０％（Ｐ＜０．０１）。组间比较，两种速度下的等速肌力矩及ＦＴ％的增长差异显著。表明肌肉动态力量训练中辅以电刺激，能有效地提高肌肉力量，并对骨骼肌ＦＴ％有显著性影响。

Effects of Electrical Stimulation on Muscular Strength and FT% in Strength Training Against Resistance in Athletes

Eighteen male athletes were randomly assigned to experimental and control groups and the quadriceps of the experimental group received electrical stimulation during the experiment with a T90-Ⅰcomputer equipment.The equal speed muscular torques of the 2 groups were determined and FT% was examined non-invasively.The results indicated that 60°/s,240°/s equal speed muscular torques and FT% of the quadriceps of the controls increased by 5.72%,7.71%(p<0.01)and 2.5%(n<0.05)respectively while the corresponding values of experimental groups increased by 8.60%(p<0.05),11.23(p<0.01)and 8.90%(n<0.01)compared with those before the experiment.The result revealed that there is significant difference between the 2 groups in the above values which suggested that electrical stimulation could help athletes to increase muscular strength effectively and has significant effect on FT%.