摘要
目的:从运动生物力学角度探索振动训练对提高肌肉力量的作用机制。方法:60只3月龄健康雄性SD大鼠随机分成安静对照组、25Hz训练组、35Hz训练组和45Hz训练组,使用日本岛津公司的AGIS-MS型电子万能试验机测试大鼠腓肠肌生物力学性能变化。结果:25Hz组的最大载荷、到最大载荷时的能量吸收、弹性模量和最大应力有非常显著的增加(P<0.01),到最大载荷时的应变有显著的减小(P<0.05);35Hz组的生物力学性能指标均无统计学意义的差异(P>0.05);45Hz组的最大载荷、到最大载荷时的能量吸收、弹性模量和最大应力有显著增加(P<0.05),到最大载荷时的应变无显著性变化(P>0.05)。结论:在振动训练中机械波的主要作用是影响肌肉中的弹性成分。
The purpose of this study is to discuss the mechanism of vibration training in improving muscle strength from the perspective of sports biomechanics. 60 male rats of 3 months old are randomly divided into quiet control group, 25Hz training group, 35Hz training group, 45Hz training group. The biomechanical parameters of gastrocnemius are measured by AGIS -MS material testing machine of the SHIMADZU Corporation. The results show that： in 25Hz training group, the maximum load, the energy absorbed to maximum load, elastic modulus and maximum stress increase very significantly （P 〈 0.01 ）, while the strain to maximum load decrease significantly （P 〈 0.05 ）. In 35Hz training group, the biomechanical parameters of rat gastrocnemius are of no statistical significance （ P 〉 0.05 ）. In 45 Hz training group, the maximum load, the energy absorbed to maximum load, elastic modulus and maximum stress increase significantly （P 〈 0.05 ） , while the strain to maximum load indicates no significant change （ P 〉 0.05 ）. It concludes that elastic elements in muscle mechanical model play the main role in vibration training.
出处
《成都体育学院学报》
CSSCI
北大核心
2014年第7期63-66,共4页
Journal of Chengdu Sport University
关键词
振动训练
腓肠肌
生物力学
肌肉力量
vibration training
gastrocnemius
biomechanics
muscle strength
