Glycogen Synthesis after Road Cycling in the Fed State
Abstract
The purpose of this study was to determine the effects of a recovery beverage immediately after exercise on rates of muscle glycogen resynthesis in response to road cycling when nutritional supplementation was supplied during exercise and a solid meal was served two hours after exercise. Eight trained male cyclists, (25+/-4 years, 69.3+/-5.2 kg, VO2 peak=4.5+/-0.4 L.min(-1)) performed two 62 km outdoor training rides in a double-blind, randomized cross-over experiment. Subjects received a food bar and a commercial sport drink during each ride. A recovery beverage (40 g CHO+20 g PRO) or a placebo (PL) was administered 30 min post-exercise. At 2 h post-exercise, a solid meal was provided for both trials. There was no difference between trials at any time point for glycogen (140+/-9, 56+/-8, and 70+/-8 mmol.kg(-1)wet wt.(-1).hr.(-1) for pre, post, and 4 h post, respectively). The addition of a supplemental recovery beverage ingested soon after exercise did not significantly increase the rate of muscle glycogen resynthesis after 4 h of recovery when nutritional supplementation is provided during exercise and a meal is consumed 2 h after exercise.
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Exogenous carbohydrate during exercise may alter endogenous depletion of glycogen and rates of subsequent glycogen re-synthesis.
“It is also important to note that exogenous carbohydrate during exercise may alter endogenous depletion of glycogen (De Bock 2005) and rates of subsequent glycogen re-synthesis (Reinert et al. 2009).”
From Males and females exhibit similar muscle glycogen recovery with varied recovery food sources (2020) · cites this paper as Reinert et al. 2009
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Males and females exhibit similar muscle glycogen recovery with varied recovery food sources
Flynn, S., Rosales, A., Hailes, W., & Ruby, B. (2020) · European Journal of Applied Physiology · doi:10.1007/s00421-020-04352-2 · Cited by 17 · see citing works
Self-citationMuscle glycogen depletion and resynthesis in highly trained male cyclists
Flockhart, M. (2011)
Influence of carbohydrate super compensationon VO2máx of physically active subjects
Zanetti, G. G., Morais, D. C., Brandão, D. A., Ferreira, G. R., Almeida, P. A. S., Guimarães, F. S. P., & da Silva, S. F. (2010) · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas)
Cramer, M. J. (2014) · The Mathematics Enthusiast
- Authors
- Reinert, A., Slivka, D., Cuddy, J., & Ruby, B.
- Affiliations
- University of Montana (US)
- ORCID
- Venue
- International Journal of Sports Medicine
- Publisher
- Georg Thieme Verlag KG
- Published
- 2009-05-19
- Volume
- 30
- Issue
- 07
- Pages
- 545-549
- ISSN
- 0172-4622 (ISSN-L)
- 1439-3964
- OpenAlex
- W1990647592
- Cited by
- 4
- References
- 0
- Citations by year
- 2020: 1 · 2014: 1
- FWCI
- 0.30
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- International Journal of Sports Medicine (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
- Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
- Keywords
- muscle glycogen resynthesis, road cycling, carbohydrate supplementation, protein supplementation, trained cyclists, post-exercise recovery
- MeSH terms
- Adult, Beverages, Bicycling, Dietary Carbohydrates, Dietary Proteins, Double-Blind Method, Glycogen, Humans, Male, Exercise, Cross-Over Studies, Dietary Supplements, Young Adult
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