단기간 체중감량차이가 체급운동선수의 스트레스 호르몬과 뇌파에 미치는 영향
Effects of Short-term Weight Loss on Stress Hormone and EEG in Weight Athletes
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PURPOSE: The aim of this research was to examine the effects of short-term weight loss on stress hormone and EEG in weight athletes. METHODS: Subjects were divided into 3 groups: CON (n=7, control), LWL (n=7, low weight loss), and HWL (n=7, high weight loss). RESULTS: The results were as follows: 1) There were significantly decreased on body fat and WHR in HWL group (p<.001). However, body mass was significantly increased in HWL group (p<.01). 2) There were no significant group by time interactions for stress hormones on all items. Epinephrine was significantly decreased after weight loss in HWL group (p<.05). While, norepinephrine (p<.05) and cortisol (p<.001) was significantly increased after weight loss in HWL group. 3) There were no significant group by time interactions for theta and SMR waves of EEG. However, alpha, mid-beta, high-beta and gamma waves showed significant difference group by time interactions (p<.001). CONCLUSIONS: It is recommended that you lose no more than 5% of your weight for stress hormones to stay in the best condition before the match. However, it is recommended that you keep your normal weight at the weight of the match to participate in the competition to maintain your best condition in the brain wave shift.
Abstract
PURPOSE: The aim of this research was to examine the effects of short-term weight loss on stress hormone and EEG in weight athletes. METHODS: Subjects were divided into 3 groups: CON (n=7, control), LWL (n=7, low weight loss), and HWL (n=7, high weight loss). RESULTS: The results were as follows: 1) There were significantly decreased on body fat and WHR in HWL group (p<.001). However, body mass was significantly increased in HWL group (p<.01). 2) There were no significant group by time interactions for stress hormones on all items. Epinephrine was significantly decreased after weight loss in HWL group (p<.05). While, norepinephrine (p<.05) and cortisol (p<.001) was significantly increased after weight loss in HWL group. 3) There were no significant group by time interactions for theta and SMR waves of EEG. However, alpha, mid-beta, high-beta and gamma waves showed significant difference group by time interactions (p<.001). CONCLUSIONS: It is recommended that you lose no more than 5% of your weight for stress hormones to stay in the best condition before the match. However, it is recommended that you keep your normal weight at the weight of the match to participate in the competition to maintain your best condition in the brain wave shift.
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