The effect of pre exercise feeding on endurance performance

[摘要] Glycogen depletion can have a deleterious effect on endurance performance. The useof carbohydrates ingested either before exercise or during has been a topic ofnumerous studies. However previous studies have been seriously limited by the useof non-athletically representative outcome measures. This study was designed to testwhether or not ingesting a carbohydrate solution 30 min prior to endurance exercisewould have an effect on endurance performance. Ten well-trained cyclists performedthree 40 km time trials (one for habituation purposes), using a control and acarbohydrate solution (35 grams). Time to completion, power output, velocity, bloodlactate, blood glucose (BG), HR, and RPE were measured during the ride. Therewere no significant differences, except for a significant drop in BG at the beginningof the ride. Based on these results, the use of carbohydrates before enduranceexercise does not hinder endurance performance.

[发布机构] University of Wisconsin

[效力级别] Carbohydrates - Metabolism

[关键词] Glycogen;Carbohydrates - Metabolism;Cycling - Physiological aspects