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KMID : 0359420020200010057
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Korean Journal of Sports Medicine
2002 Volume.20 No. 1 p.57 ~ p.64
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The Effect of Aerobic Training & MCT , LCT Supplement on Exercise Performance , Energy Substrate Changes in Rats
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Ji Young-Suk
Kim Seong-Su
Um Sang-Yong
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Abstract
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The purpose of this study was to investigate the effects of medium-chain triglyceride(MCT) and long-chain triglyceride (LCT) supplement on exercise performance time, energy substrate usage and change of fatigue factors in rats. Thirty male Sprague-Dawley rats were divided into six groups(n=5): Non-supplement untrained Exercise(NUTE), Non-supplement trained Exercise(NTE), MCT-supplement untrained Exercise(MUTE), MCT-supplement trained Exercise(MTE), LCT-supplement untrained Exercise(LUTE), and LCT-supplement trained Exercise(LTE). At the end of 8 weeks swimming training, the subjects were fasted for 12 hours, and blood samples were taken from their abdominal aortas in the Medical Research Center. Among the 6 groups, MTE had the greatest increase in swimming performance time. There was significant increase of free fatty acid(FFA) levels in NTE and LTE group compared with that in NUTE group(p<.05). However, there was no significant increase in other groups. The lactate levels of five groups were significantly decreased in comparison with that of NUTE group(p<.05). The pyruvate levels of MUTE, MTE and LUTE groups were significantly decreased in comparison with that of NUTE group(p<.05). In conclusion, this study suggested that the regular endurance training with supplementary MCT could reduce the fatigue factors and improve exercise performance time by increasing the ability to use energy substrate.
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KEYWORD
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MCT, LCT, FFA, Lactate, Pyruvate
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