交变负荷训练法对下肢肌肉力量训练效果的影响

Research on the Effects of Alternating Load Strength Training on Muscular Strength

目的：采用自制振动台为干预手段对下肢肌肉进行力量交变负荷力量训练,研究交变负荷力量训练对肌肉力量增长效果的影响.方法：上海体育学院体育教育专业男子跳远运动员10名,随机分为1）“交变负荷训练组”（Ⅰ组,n=5）,振动刺激的频率为20～25 Hz,加速度为15～20m/s^2;2）“传统力量训练组”（Ⅰ组,n=5）,两组共接受8周训练,实验前后一周内利用Biodex对原地纵跳能力和下肢三大关节屈伸肌肌群的一般、快速力量和功率等指标进行测定.结果：振动刺激训练能够有效地提高受试者的原地纵跳能力、肢三大关节屈伸肌肌群的一般和快速力量,组间比较具有显著性差异.结论：交变负荷力量训练法能有效地提高肌肉力量训练的效果.

Objective： The athletes received whole bodily vibration stimulation on the home-made vibration platform in order to investigate the effect of changing strength in the training to muscle strength. Methods： Ten male students of Shanghai Institute of P.E. volunteered to participate in the strength training and were assigned randomly to the alternating load strength training and traditional strength training groups. They trained for 8 weeks. The vibration stimulation group received whole bodily vibration stimulation on the vibration platform when do above training. The range of the vibration frequency was 20 - 25 Hz and the acceleration was 15 - 20 m/s^2 .The maximal isotonic strength of lower limb of knee＇s 120° were tested; the muscle strength of knee joints was measured on Biodex isokinetic system 60°/s and 300°/s; Results： The alternating load strength training could effected improved the ability of jump, the original and speed strength of flexor and extensor of the lower limbs and the shock attenuation ability. Conclusion： It was suggested that the alternating load strength training could obviously effectively improve the effects of the muscular strength.