METABOLIC CAPACITY, FIBER-TYPE AREA AND CAPILLARIZATION OF RAT PLANTARIS MUSCLE - EFFECTS OF AGE, OVERLOAD AND TRAINING AND RELATIONSHIP WITH FATIGUE RESISTANCE

被引：28

作者：

DEGENS, H ^{[1
]}

VEERKAMP, JH ^{[1
]}

VANMOERKERK, HTB ^{[1
]}

TUREK, Z ^{[1
]}

HOOFD, LJC ^{[1
]}

BINKHORST, RA ^{[1
]}

机构：

[1] CATHOLIC UNIV NIJMEGEN,DEPT BIOCHEM,6500 HB NIJMEGEN,NETHERLANDS

来源：

INTERNATIONAL JOURNAL OF BIOCHEMISTRY | 1993年 / 25卷 / 08期

关键词：

D O I：

10.1016/0020-711X(93)90592-3

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：

1. The influences of age (5, 13 and 25-month-old rats), overload as obtained by denervation of synergists, and training on the metabolic capacity, relative muscle cross-sectional area occupied by each fibre type, capillarization and fatigue resistance of the rat m. plantaris were investigated. 2. Creatine kinase, phosphorylase and citrate synthase activities were lower in muscles of 25 than in those of 13-month-old rats (P < 0.001). 3. Overload resulted in an increased relative area of type I and IIa fibres at all ages (P = 0.001). 4. Capillary density decreased with overload and increasing age (P < 0.001). 5. Fatigue resistance was higher in muscles of 13 than in those of 5-month-old rats (P < 0.05), and increased with overload (P < 0.05) at all ages. 6. Fatigue resistance of the whole muscle was not closely related to its oxidative capacity in contrast to what is generally found for single fibres or motor units.

引用

页码：1141 / 1148

页数：8

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