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Carbohydrate-electrolyte feedings and 1 h time trial cycling performance.
Int J Sport Nutr Exerc Metab 2004; 14(5):541-9IJ

Abstract

The effects of a commercial sports drink on performance in high-intensity cycling was investigated. Nine well-trained subjects were asked to complete a set amount of work as fast as possible (time trial) following 24 h of dietary (subjects were provided with food, energy 57.4+/-2.4 kcal/kg and carbohydrate 9.1+/-0.4 g/kg) and exercise control. During exercise, subjects were provided with 14 mL/kg of either 6% carbohydrate-electrolyte (CHO-E) solution or carbohydrate-free placebo (P). Results showed that subjects' performances did not greatly improve (time, 62:34+/-6:44 min:sec (CHO-E) vs. 62:40+/-5:35 min:sec (P); average power output, 283.0+/-25.0 W (CHO-E) vs. 282.9+/-29.3 W (P), P > 0.05) while consuming the sports drink. It was concluded that CHO-E consumption throughout a 1-h time trial, following a pre-exercise dietary regimen designed to optimize glucose availability, did not improve time or power output to a greater degree than P in well-trained cyclists.

Authors+Show Affiliations

School of Health Science, Griffith University, Gold Coast, QLD 9726, Australia.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15673100

Citation

Desbrow, Ben, et al. "Carbohydrate-electrolyte Feedings and 1 H Time Trial Cycling Performance." International Journal of Sport Nutrition and Exercise Metabolism, vol. 14, no. 5, 2004, pp. 541-9.
Desbrow B, Anderson S, Barrett J, et al. Carbohydrate-electrolyte feedings and 1 h time trial cycling performance. Int J Sport Nutr Exerc Metab. 2004;14(5):541-9.
Desbrow, B., Anderson, S., Barrett, J., Rao, E., & Hargreaves, M. (2004). Carbohydrate-electrolyte feedings and 1 h time trial cycling performance. International Journal of Sport Nutrition and Exercise Metabolism, 14(5), pp. 541-9.
Desbrow B, et al. Carbohydrate-electrolyte Feedings and 1 H Time Trial Cycling Performance. Int J Sport Nutr Exerc Metab. 2004;14(5):541-9. PubMed PMID: 15673100.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Carbohydrate-electrolyte feedings and 1 h time trial cycling performance. AU - Desbrow,Ben, AU - Anderson,Sally, AU - Barrett,Jennifer, AU - Rao,Elissa, AU - Hargreaves,Mark, PY - 2005/1/28/pubmed PY - 2005/4/9/medline PY - 2005/1/28/entrez SP - 541 EP - 9 JF - International journal of sport nutrition and exercise metabolism JO - Int J Sport Nutr Exerc Metab VL - 14 IS - 5 N2 - The effects of a commercial sports drink on performance in high-intensity cycling was investigated. Nine well-trained subjects were asked to complete a set amount of work as fast as possible (time trial) following 24 h of dietary (subjects were provided with food, energy 57.4+/-2.4 kcal/kg and carbohydrate 9.1+/-0.4 g/kg) and exercise control. During exercise, subjects were provided with 14 mL/kg of either 6% carbohydrate-electrolyte (CHO-E) solution or carbohydrate-free placebo (P). Results showed that subjects' performances did not greatly improve (time, 62:34+/-6:44 min:sec (CHO-E) vs. 62:40+/-5:35 min:sec (P); average power output, 283.0+/-25.0 W (CHO-E) vs. 282.9+/-29.3 W (P), P > 0.05) while consuming the sports drink. It was concluded that CHO-E consumption throughout a 1-h time trial, following a pre-exercise dietary regimen designed to optimize glucose availability, did not improve time or power output to a greater degree than P in well-trained cyclists. SN - 1526-484X UR - https://www.unboundmedicine.com/medline/citation/15673100/Carbohydrate_electrolyte_feedings_and_1_h_time_trial_cycling_performance_ L2 - https://medlineplus.gov/carbohydrates.html DB - PRIME DP - Unbound Medicine ER -