Articles : Effect of Reseeding Diet Composition after Rapid Weight Loss on High-intensity Exercise Performance in Taekwondo Players

Journal of Exercise Nutrition & Biochemistry 2002;6(3):213-225.

Abstract

This study compared the high-intensity exercise performance of 3min-3bouls and exercise-induced fatigue variables of blood between high CHO and moderate CHO of refeeding diet after rapid weight loss. Subjects were 24 college aged male taekwondo players, and divided to three groups as high CHo refeeding group, moderate CHO refeeding group, and contol group. High CHO refeeding group and moderate CHO refeeding group lost body mass following restricted energy and dehydration to a significant decrease, but changes in body fat were inconsistent. High CHO refeeding group and moderate CHO refeeding group showed a decrease tendency of total work output and mean power output in 3 min-3 bouts exercise after rapid weight loss and refeeding diet, especially moderate CHO refeeding group showed a prominent decrease of total work output, but these changes showed no significant differences. Peak power output of moderate CHO refeeding group showd a highest decrease after refeeding diet among three grpous. High-intensity exercise performance of 3 min-3 bouts showed a significant decrease after raid weight loss, but difference of refeeding diet composition showed no significant effect to the high-intensity exercise performance of 3 min-3 bouts. In high CHO refeeding group and moderatc CHO refeeding gorup, blood lactate concentration and heart rate showed a slowdown tendency of increase during high-intensity exercise after rapid weight loss, but these changes were caused by the decrease of exercise performance. Hematoerit value, blood hemoglobin, ammonia, and glucose concentration showed a slowdown tendency of increase during high-intensity exercise after rapid weight loss, but these changes showed no showed no significant effect to these changes. In conclusion, high intensity exercise perfornamce of 3min-3bouts showed a significant decrease after rapid weight loss, and the difference of refeeding diet composition after rapid weight loss was no significant effect to the changes of exercise-induced fatigue variables of blood, but high CHO of refeeding diet could be suggested th effective recovery method on a decline of peak power output after rapid weight loss.

Key Words: rapid weight loss, reseeding diet composition, high-intensity exercise performance, taekwondo