Abstract
Previous studies have shown that body fat, serum cortisol levels, and dehydroepiandrosterone sulfate(DHEA-S) are closely associated with insulin sensitivity and whole-body glycemic control. Detraining is one of the major factors, which influences exercise performance and training adaptations. PURPOSE: To investigate the effect of 2-month detraining on DHEA-S, cortisol levels and whole-body glucose metabolism in elite badminton players. METHODS: Eight elite college badminton players (weight: 68±4.48 kg; height: 175±4.87 cm) were detrained for 2 month after the normal training season terminated. Oral glucose tolerance test (OGTT) was performed before and after detraining. Blood samples taken during OGTT were analyzed for insulin, cortrisol and DHEA-S levels. Waist-hip ratios (WHR), body mass index (BMI) were used for body composition measurement resULts: After a 2-month detraining there was a significant increase in body weight (68±4.48 VS. 79±10.4 Kg, p<0.05), BMI (22±2.02 VS. 26±3.47, p<0.05), WHR (0.82±0.038 VS. 0.92±0.037, p<0.05) and a decrease in DHEA-S (16.87±6.67 VS. 3.55±1.95 ug /dl, p<0.05), and the DHEA-S/cortisolratio(D/Cratio) (17.38±1.54 VS. 4.3±2.22, p<0.05). However there were no changes in either glucose tolerance (2272±526 VS. 2401±653 area under OGTT curve (AUC)) or insulin sensitivity (2559±959 VS. 2750±1499 AUC). CONCLUSION: A 2-month detraining does not alter glucose tolerance and insulin sensitivity in elite college badminton players. However, the lower DHEA-S level, D/C ratio and increasing obesity status might further influence retraining and performance.
Published Version
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