Effects of carbohydrate ingestion on gastric emptying and exercise performance.

摘要: In an effort to determine the effects of 5 (CHO-5), 6 (CHO-6), and 7.5 (CHO-7.5) percent carbohydrate solutions on gastric emptying performance, 8 trained male cyclists performed 4 trials intermittent (7- x ;12-min bout) cycling at 70% VO2max. A final 12-min self-paced "performance" ride was isokinetic ergometer (Fitron) interfaced with a computer provide total work output. water placebo (WP) used as control. Each followed by 3-min rest, during which drink consumed (8.5 ml.kg-1; mean = 1,336 ml.2 h-1). Blood samples were taken 0, 25, 55, 85, 115 min for blood glucose analysis. Following performance ride, residue obtained intubation aspiration. Of original ml ingested each trial, volumes emptied stomach four 1,306 +/- 76, 1,262 82, 1,288 75, 1,278 77 (+/- SE) WP, CHO-5, CHO-6, CHO-7.5, respectively. Only volume in CHO-5 trial significantly different from WP. The data showed that all CHO trials, more produced compared WP (CHO-5 1.98 0.09 10(5) Nm vs 1.83 0.11 Nm). There no significant differences between any trials.(ABSTRACT TRUNCATED AT 250 WORDS)