博士 / 國立臺灣師範大學 / 體育學系 / 93 / The purpose of this study was to investigate the effect of oral creatine (Cr) and carbohydrate (CHO) supplementation on aerobic and anaerobic performance in elite rowers during intense training program. Seventeen subjects were voluntary to participate in this study and randomly assigned to three groups: CrCG (0.3 g•kg-1•day-1 creatine plus 4•50 g•day-1 glucose, n=6), CrG (0.3 g•kg-1•day-1 creatine plus 4•50 g•day-1 placebo, n=5), and PlG (0.3 g•kg-1•day-1 placebo plus 4•50 g•day-1 placebo, n=6). Before and after a 5-day load of creatine or placebo, subjects performed the incremental rowing exercise test, 2x30s Wingate’s test and simulated 2000 m rowing time trial. Lactate threshold (LT) and individual anaerobic threshold (IAT) were determined to refer as the aerobic capacity, as well as the Wingate’s test for the anaerobic performance. Body composition was measured by bioelectrical impedance analyzer and heart rate variability was measured continuously in sited position. There was significantly increased body weight only in CrCG, however, the fat-free mass and intercellular water in CrCG and CrG were significantly increased after supplementation. No significant changes were found on the VO2max, LT and IAT in three groups after supplementation, but the time to exhaustion was increased by creatine ingestion. The performances of Wingate’s test were improved in CrCG and CrG after supplementation, but there were no significant differences among three groups. The 500-m split times and average powers at the first and last 500 m of the 2000 m rowing test were significantly improved by creatine supplementation. The HF (high frequency) power in sited position in CrG was significantly decreased after a 5-day load. These results indicate that the intermittent high-intensity exercise and the 2000 m rowing performance could be improved by creatine supplementation, whether combined with glucose ingestion or not, during heavy training program in the elite rowers.
| Identifer | oai:union.ndltd.org:TW/093NTNU5567093 |
| Date | January 2005 |
| Creators | Ching-Feng Cheng, 鄭景峰 |
| Contributors | Jung-Charng Lin, 林正常 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 139 |
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