Effect of Blood fatigue factors following eccentric exercise on delayed muscle damage

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Exerc Sci > Volume 13(2); 2004 > Article

Exercise Science 2004;13(2): 251-262.

이심성 수축에 따른 혈중 피로 유발 요인들의 변화 형태가 운동 후 근육 손상의 지연 현상에 미치는 영향

김정규¹, 문희원²

¹강원대학교
²강릉원주대학교

Effect of Blood fatigue factors following eccentric exercise on delayed muscle damage

ABSTRACT

Effect of Blood fatigue factors following eccentric exercise on delayed muscle damage. Exercise Science, 13(2): 251-262, 2004. The purpose of this study was to examine the effect of blood fatigue factors following eccentric exercise on delayed muscle damage. The running tests were performed on a treadmill for 30 min and all subjects(n=10) of present study participated in two different kinds of experimental conditions.: one was level running(LR) and the others was downhill running(DR) at a decline angle -14 % with their favorable running speed.There were significant difference in the total VO2 between LR and DR conditions(p<.05). The mean blood CK activity of DR was higher than that of LR group at the 12 h, 24 h, and 48 h after finishing test, and there were significant difference between LR and DR conditions following the running exercise(p<.05). In the mean blood lactate concentration at the end of the 30 min running exercise, there were significant differences between LR and DR conditions(p<.05). In the mean blood ammonia concentration at the end of 30 min running exercise, there were significant differences between LR and DR conditions(p<.05). However, there were no significant differences in blood phosphorus concentration between LR and DR conditions at the end of 30 min running exercise(p>.05).In conclusion, an indirectly marker of muscle damage, serum CK activity was a significantly higher at the 12-24 h after downhill running in particular involves substantial eccentric exercise. Also, one of most effective blood fatigue factor on delayed muscle damage might be ammonia concentration and production during eccentric exercise.

Key words: eccentric exercise, fatigue factors, delayed muscle damage