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운동생리학 : 운동강도에 따른 탈진 운동이 혈중 5-HT 와 도파민의 농도에 미치는 영향
김성수(SungSooKim),송분도(BunDoSong),라성민(SeongMinRa),신말순(MalSoonShin),이명화(MyongHwaLee),윤범철(BumChulYoon) 한국체육학회 2001 한국체육학회지 Vol.40 No.3
The purpose of this study was carried to investigate the effects of exhaustive exercise with different on blood free fatty acid, 5-HT and dopamine. The experiments were performed in Sprague-Dawley rats weighing 250-300g. Sixty Sprague-Dawley rats were randomly assigned into two groups: the mild intensity exhaustive exercise group(MIE: n=30), high intensity exhaustive exercise group(HIE: n=30). Animals participating in the exercise protocols were acclimated to treadmill running(20m/min, 15-20 min/day at a 0% grade for 1 week). MIE groups were exercised at 20m/min, 0% grade(50% VO₂max) to physical exhaustion. HIE groups were exercised at 40m/min, 20% grade(80% VO₂max) to physical exhaustion. The results through the statistical analysis of free fatty acid, 5-HT, dopamine in rats were as follow: 1. Free fatty acid levels were reduced at post-exercise, but increased at the time of recovery 10mins, 60mins in the mild intensity exhaustive exercise. In the high intensity exhaustive exercise groups were increased according to time. There was significant difference between 10mins after recovery and exhaustion. There was significant difference between groups. 2. Plasma 5-HT levels were significantly higher in the mild intensity exercise groups compared with those in the high intensity exercise groups. 5-HT levels were significant difference between two groups. The mild intensity exercise groups were higher 10mins after recovery than exhaustion and decreased at the time of 60mins recovery. 3. Dopamine levels were elevated at the post-exercise and reduced at the 10mins after recovery in the mild intensity exhausted exercise groups. The high intensity exercise groups were reduced at the exhaustion time and elevated at the time of 10mins recovery. 5-HT levels were no significant difference between two groups, but time of period was significant. There was significant difference between 10mins after recovery and 60mins after recovery.
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