A rat model of progressive isometric strength training

被引：16
|
作者：
Lac, G [1 ]
Cavalie, H [1 ]
机构：
[1] UFR STAPS, Lab Performance Motrice, F-63172 Aubiere, France
来源：
ARCHIVES OF PHYSIOLOGY AND BIOCHEMISTRY | 1999年 / 107卷 / 02期
关键词：
rat; isometric training; strength; fibres type;
D O I：
10.1076/apab.107.2.144.4337
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
This study presents an isometric model of strength resistance training in rats. Seven rats were trained for five weeks with increasing load, once a day for six days per week while seven rats served as control group. Mechanical strength of the hindlimb muscle group was measured on anaesthetised rats with a force transducer linked to the Achilles tendon after electrical stimulation of the sciatic nerve. Training resulted in a 74 +/- 2% strength gain in experimental (E) vs control (C) rats and in a reduction of fatigability with no change in gastrocnemius, soleus and extensor digitorum longus weights. The fibres composition of the gastrocnemius showed a 50% increase of IIA fibres and a 17% fall of IIB fibres. Consequently, this new model of isometric training is suitable for physiological studies.
引用
收藏
页码：144 / 151
页数：8
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