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Males and females exhibit similar muscle glycogen recovery with varied recovery food sources

PURPOSE: Research has elucidated the impact of post-exercise carbohydrate nutrition and environmental conditions on muscle glycogen re-synthesis. However, research has minimally considered the implications of glycogen recovery in females and has mostly focused on commercial sport nutrition products....

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Autores principales: Flynn, Shannon, Rosales, Alejandro, Hailes, Walter, Ruby, Brent
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7181447/
https://www.ncbi.nlm.nih.gov/pubmed/32215726
http://dx.doi.org/10.1007/s00421-020-04352-2
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author Flynn, Shannon
Rosales, Alejandro
Hailes, Walter
Ruby, Brent
author_facet Flynn, Shannon
Rosales, Alejandro
Hailes, Walter
Ruby, Brent
author_sort Flynn, Shannon
collection PubMed
description PURPOSE: Research has elucidated the impact of post-exercise carbohydrate nutrition and environmental conditions on muscle glycogen re-synthesis. However, research has minimally considered the implications of glycogen recovery in females and has mostly focused on commercial sport nutrition products. The purpose of this study was to determine the effects of varied mixed macronutrient feedings on glycogen recovery and subsequent exercise performance in both sexes. METHODS: Males (n = 8) and females (n = 8) participated in a crossover study. Subjects completed a 90-min cycling glycogen depletion trial, then rested for 4 h. Two carbohydrate feedings (1.6 g kg(−1)) of either sport supplements or potato-based products were delivered at 0 and 2 h post-exercise. Muscle biopsies (glycogen) and blood samples (glucose, insulin) were collected during the recovery. Afterwards, subjects completed a 20 km cycling time trial. RESULTS: There was no difference between sexes or trials for glycogen recovery rates (male: 7.9 ± 2.7, female: 8.2 ± 2.7, potato-based: 8.0 ± 2.5, sport supplement: 8.1 ± 3.1 mM kg wet wt(−1) h(−1), p > 0.05). Time trial performance was not different between diets (38.3 ± 4.4 and 37.8 ± 3.9 min for potato and sport supplement, respectively, p > 0.05). CONCLUSIONS: These results indicate that food items, such as potato-based products, can be as effective as commercially marketed sports supplements when developing glycogen recovery oriented menus and that absolute carbohydrate dose feedings (g kg(−1)) can be effectively applied to both males and females.
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spelling pubmed-71814472020-04-29 Males and females exhibit similar muscle glycogen recovery with varied recovery food sources Flynn, Shannon Rosales, Alejandro Hailes, Walter Ruby, Brent Eur J Appl Physiol Original Article PURPOSE: Research has elucidated the impact of post-exercise carbohydrate nutrition and environmental conditions on muscle glycogen re-synthesis. However, research has minimally considered the implications of glycogen recovery in females and has mostly focused on commercial sport nutrition products. The purpose of this study was to determine the effects of varied mixed macronutrient feedings on glycogen recovery and subsequent exercise performance in both sexes. METHODS: Males (n = 8) and females (n = 8) participated in a crossover study. Subjects completed a 90-min cycling glycogen depletion trial, then rested for 4 h. Two carbohydrate feedings (1.6 g kg(−1)) of either sport supplements or potato-based products were delivered at 0 and 2 h post-exercise. Muscle biopsies (glycogen) and blood samples (glucose, insulin) were collected during the recovery. Afterwards, subjects completed a 20 km cycling time trial. RESULTS: There was no difference between sexes or trials for glycogen recovery rates (male: 7.9 ± 2.7, female: 8.2 ± 2.7, potato-based: 8.0 ± 2.5, sport supplement: 8.1 ± 3.1 mM kg wet wt(−1) h(−1), p > 0.05). Time trial performance was not different between diets (38.3 ± 4.4 and 37.8 ± 3.9 min for potato and sport supplement, respectively, p > 0.05). CONCLUSIONS: These results indicate that food items, such as potato-based products, can be as effective as commercially marketed sports supplements when developing glycogen recovery oriented menus and that absolute carbohydrate dose feedings (g kg(−1)) can be effectively applied to both males and females. Springer Berlin Heidelberg 2020-03-25 2020 /pmc/articles/PMC7181447/ /pubmed/32215726 http://dx.doi.org/10.1007/s00421-020-04352-2 Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Original Article
Flynn, Shannon
Rosales, Alejandro
Hailes, Walter
Ruby, Brent
Males and females exhibit similar muscle glycogen recovery with varied recovery food sources
title Males and females exhibit similar muscle glycogen recovery with varied recovery food sources
title_full Males and females exhibit similar muscle glycogen recovery with varied recovery food sources
title_fullStr Males and females exhibit similar muscle glycogen recovery with varied recovery food sources
title_full_unstemmed Males and females exhibit similar muscle glycogen recovery with varied recovery food sources
title_short Males and females exhibit similar muscle glycogen recovery with varied recovery food sources
title_sort males and females exhibit similar muscle glycogen recovery with varied recovery food sources
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7181447/
https://www.ncbi.nlm.nih.gov/pubmed/32215726
http://dx.doi.org/10.1007/s00421-020-04352-2
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