| Articles : Effects of Vitamin E & C Supplementation on the Cardiorespiratory Function during Training Phase in Taekwondo Players |
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| Abstract |
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This purpose of this study investigated the changes of cardiorespiratory function following in the supplementation of antioxidative vitamin E & C during 9 weeks of training phase in taekwondo players. college-aged male subjects were divided to taekwondo players group (N=7) and students group (N=7), and performed the graded treadmill test of 3 time(before, after 3 weeks and 9 weeks supplementation) as similar protocol. Respiratory gas variables and blood lactate concentration were measured during graded treadmill test and recovery phase, and physiological parameters relation to cardiorespiratory function and recovery rate of blood lactate concnetration were analyzed. Peak values of VO_(２) heart rate, and VE in takewondo players group showed the significant higher values than students group. Students group showed a decrease tendency of peak values of VO_(２) and VE after 3 weeks and 9 weeks of vitamin supplementation as compared before test, taekwondo players group showed a increase tendency of peak values of VO-(２) after 3 weeks and 9 weeks of vitamin supplementation as compared before test, but these tendency of 2 groups showed no significant difference. Ventilation threshold and OBLA in taekwondo players group showed the significant higher values than students group. These levels after 3 weeks and 9 weeks of vitamin supplementation showed a increase tendency as compared before test in both groups, so it could be suggested the positive effects of vitamin supplementation. Students group showed a significant increase of recovery rate of blood lactate concentration after 3 weeks and 9 weeks of vitamin supplementation as compared before test, but taekwondo players group showed a significant decrease recovery rate of blood lactate concentration after 9 weeks of vitamin supplementation as compared before test. Therefore it could be suggested the negative effects of over-training in taekwondo players and no effects of vitamin supplementation. These results could be suggested the positive effects of vitamin supplementation for the improvement of cardiorespiratory function and recovery rate of blood lactate concentration, but the consideration of training program and vitamin supplementation volume were controled for the maintain of optimal conditioning in taekwondo players. |
| Key Words:
antioxidant vitamin, taekwondo, cardiorespiratory function |
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