摘要
目的:探讨抗阻训练结合电刺激增加肌肉力量及含量的相关生物学机制,为抗阻训练提供科学依据。方法:16名健康男大学生随机分为常规抗阻训练组(CREG,n=8),抗阻训练结合电刺激组(HYBG,n=8),所有受试者均完成10组每组包括10次膝关节屈伸的练习,组间间歇时间为60秒,负荷约为65%IRM。分别在运动前、运动后即刻、15 min、30 min、60 min、120 min、24 h时取静脉血,测定血浆GH、IGF-1、NE及LA的浓度。结果:与CREG比较,HY-BG受试者血浆GH水平在训练后即刻至60min显著高于CREG(P<0.01,P<0.05,P<0.05,P<0.05);HYBG受试者血乳酸水平从训练后15 min至30 min显著高于CREG(P<0.05,P<0.05);而血浆IGF-1水平与NE水平的变化趋势,HYBG和CREG比较没有显著差异。结论:抗阻训练结合电刺激对GH和LA的影响比单纯抗阻训练更明显,且不会诱导较强的交感神经活动。这种训练手段提高肌肉力量及含量可能主要是通过提高GH分泌水平实现的。
Objective：The purpose of this study was to examine the effect of resistance exercise combined with electrical stimulation on plasma GH,IGF-1,NE and LA dynamic levels.Methods：16 healthy male college students were randomly divided into 2 groups： Conventional resistance exercise group（CREG,n=8） and resistance exercise combined with electrical stimulation group（HYBG,n=8）,the later with Hybrid Exercise Method.The bilateral leg resistance exercise with 10 sets of 10 knee flexion-and-extensions was applied for all subjects;with the load is about 65%1RM and 60 seconds interest rest intervals.Plasma concentration of GH,IGF-1,NE and LA were determined before exercise and 0 min,15 min,30 min,60 min,120 min and 24 h.Results：Plasma concentration of GH in HYBG is significantly higher than CREG from after exercise 0-60 min（P0.01,P0.05,P0.05,P0.05）;Plasma LA levels in HYBG is significantly higher than CREG from after exercise 15-30 min（P0.05,P0.05）;the concentration of IGF-1 and NE were increase after exercise,but no significant difference between HYBG and CREG.Conclusion：Hybrid Exercise Method is more efficient in stimulating acute increases in Plasma concentration of GH and LA without enhancing sympathetic nerve stimulation.
出处
《山东体育学院学报》
CSSCI
北大核心
2011年第10期57-60,共4页
Journal of Shandong Sport University
基金
天津市教委资助项目(项目编号:2008TY14)
