| 摘要: | This study examined the effects of carbohydrate ingestion on acute hormonal responses to a single bout of resistance exercise (RE). Ten university male students regularly performing RE participated in this study. All subjects performed a RM test, and then performed two treatments: carbohydrate (CHO, 1g/kg) and control (CON) in counter balance order. All subjects took in supplement 1 hour prior to RE, and then performed RE (eight exercises, 3 sets of 10 repetitions at 75% of 1RM). Blood samples were collected prior to supplement intake (pre-60), immediately prior to RE (pre-exe), and 0, 15, 30 minutes after RE (P0, P15, P30) for analysis of testosterone, cortisol, growth hormone, insulin, glucose and lactic acid. Each experiment was separated by 7 days. In this study, the statistical analysis of a two-way analysis of variance (treatment by time) with repeated measures was applied. After RE, CHO's response of insulin (P0, P15) and growth hormone (P0) were significantly higher than CON. The response of testosterone (P0, P15, P30) and cortisol (P0, P15) were significantly lower than CON (p＜.05), but there was no significant difference on blood glucose, lactic acid between CHO and CON (p＞.05). The results of this study indicated that intake of carbohydrate prior to RE increased the response of insulin and growth hormone, decreased the concentration of testosterone and inhibited the response of cortisol. Thus, this study finds that intake of carbohydrate prior to RE can induce hormonal responses as RE is favorable for anabolism. |
