TIME COURSE OF MUSCLE ADAPTATION AFTER HIGH FORCE ECCENTRIC EXERCISE

被引:159
作者
NOSAKA, K
CLARKSON, PM
MCGUIGGIN, ME
BYRNE, JM
机构
[1] UNIV MASSACHUSETTS,DEPT EXERCISE SCI,BOYDEN BLDG,AMHERST,MA 01003
[2] YOKOHAMA CITY UNIV,INST SPORTS MED,KANAZAWA KU,YOKOHAMA 236,JAPAN
来源
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY AND OCCUPATIONAL PHYSIOLOGY | 1991年 / 63卷 / 01期
关键词
ECCENTRIC EXERCISE; MUSCLE DAMAGE; ADAPTATION; CREATINE KINASE;
D O I
10.1007/BF00760804
中图分类号
Q4 [生理学];
学科分类号
071003 ;
摘要
The repeated bout effect on changes in muscle damage indicators was examined in two groups of subjects following two bouts of 70 maximal eccentric actions of the forearm flexors. Fourteen college age female subjects were placed into two groups. The two bouts were separated by 6 weeks (n = 6), and 10 weeks (n = 8). The subjects performed the same amount of work for the bouts. The muscle damage indicators were isometric strength (STR), relaxed elbow joint angle (RANG), flexed elbow joint angle (FANG), perceived muscle soreness ratings (SOR), and plasma creatine kinase activity (CK). These measures were obtained pre-exercise and 5 days following each bout. The first bout showed significant changes in all measures over time for both groups (P < 0.01). For the 6-week group, significantly smaller changes in RANG (P < 0.01), SOR (P < 0.05), and CK (P < 0.01), as well as significantly faster recoveries (P < 0.05) for STR and FANG were produced in the second bout. For the 10-week group, significantly smaller changes in RANG (P < 0.05) and CK (P < 0.01) were demonstrated by the second bout, but no significant difference was found for STR, FANG, and SOR between bouts 1 and 2. Changes in CK were still significantly smaller than that of the first bout when 6 subjects (3 subjects from each group) performed the same exercise 6 months after the second bout, but no difference in other measures. It is concluded that the length of the adaptation effect varies among the indicators of muscle damage and that the duration of the adaptation for CK is dramatic.
引用
收藏
页码:70 / 76
页数:7
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