태권도선수의 단기간 체중감량이 체력과 혈중 전해질 농도에 미치는 영향

다국어 초록 (Multilingual Abstract)

This study was conducted to investigate whether the short-term weight loss had an effect on physical fitness and blood electrolytes in high school Taekwondo players. Sixteen subjects were selected by intentional sampling method, and divided into two groups of eight, test group and control group. All the subjects physical fitness and blood electrolytes before and after weight loss. Test group had to lose their weight by 5% for 6 days. Control group didn`t have to lose their weight. After 6 day, both group members` physical fitness and blood electrolytes density were measured. The results of the test are as following; 1. In the change of physical fitness before and after weight loss, there was significant decreased in muscle endurance of test group. 2. In the change of blood electrolytes density before and after weight loss, there was significant increased on Na^+, K^+, Cl^-, Mg^++ and so on. The results of this study suggest that the Taekwondo players short term weight loss more than 5% in their weight is possibility that decreaing of muscle endurance, unbalance of water and acid-base has a negative influence on their health and game. But because of contrary conclusion It is necessary that we must achieve continuative study.