摘要
目的:通过饮食诱导小鼠以攀爬运动形式进行抗阻训练,观察自主攀爬运动对小鼠体成分的影响。方法:小鼠分为攀爬组(E)和对照组(C),攀爬组逐渐递增攀爬高度。分别在7、12周后用双能X射线吸收法(DEXA)测试小鼠体成分,肌肉采样称量湿重并计算肌肉肥大比率。结果:7周自主攀爬训练后,DEXA测试数据显示小鼠脂肪质量、脂肪百分比低于对照组(分别P<0.01,P<0.05),且小鼠胫骨前肌湿重及肥大比率均高于对照组(分别P<0.05,P<0.01);12周自主攀爬训练后,攀爬组小鼠瘦体重高于对照组(P<0.05),脂肪质量、脂肪百分比低于对照组(均P<0.01)。攀爬组小鼠腓肠肌、比目鱼肌、胫骨前肌、趾长伸肌、肱三头肌肥大比率高于对照组(P<0.01),肱二头肌肥大比率高于对照组(P<0.05)。结论通过饮食诱导的小鼠自主攀爬运动引起肌肉肥大,增加瘦体重和肌肉质量,减少脂肪质量及脂肪百分比。因此可认为小鼠这种对抗自身体重的自主攀爬是一种应激小、对体成分有良好影响的递增负荷运动训练模型。
Objective：We studied the effects of mice＇s voluntarily climbing-diet-induced resistance exercise-on body composition. Methods：The mice were divided into the sedentary control group（ C） and the climbing group（ E） in which the height of climbing was progressively increased.At 7thand 12 thweeks respectively,the body compositions of the mice were assessed via DEXA. After muscle sampled,the wet weights and the hypertrophy ratios of the muscles were measured. Results： After 7 weeks of training,the DEXA results indicated that fat mass and fat% of the E group were lower（ P 〈0. 01,P 〈0. 05 respectively） than the C group. The wet weight and the hypertrophy ratio of tibialis anterior were greater（ P〈 0. 05,P〈 0. 01 respectively） than the C group. At 12^th week,compared with the C group,the lean mass in the E group was higher（P 〈0.05）,but fat mass and fat%（P〈 0.01both） significantly decreased;the hypertrophies of gastrocnemius,soleus,tibialis anterior,extensor digitorum longus,triceps（P 〈0.01all） and biceps（P 〈0.05） were greater in E group. Conclusion： The diet-induced voluntarily climbing exercise could cause muscle hypertrophies,increase the lean mass and muscle wet weight,and decrease the fat mass and fat% in mice. So it is concluded that mices voluntarily climbing with bearing body weight is the model of progressive load exercise training which causes little stess and has a positive impact on body composition.
出处
《南京体育学院学报（自然科学版）》
2014年第4期30-35,共6页
Joournal of Nanjing Institute of Physical Education:Natural Science
基金
国家自然科学基金资助项目(编号:30971419)
关键词
运动训练模型
攀爬
肌肉肥大
体成分
小鼠
exercise model
climbing
muscle hypertrophy
body composition
mice
