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The Effects of 24-h Fasting on Exercise Performance and Metabolic Parameters in a Pilot Study of Female CrossFit Athletes

Many studies have tested intermittent fasting (IF) in athletes, but its effects on female CrossFit athletes remain relatively unexplored in the existing literature. The aim of this study was to evaluate and compare the effects of 24-h IF on the physical performance of female CrossFit practitioners....

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Autores principales: Eroglu, Melike Nur, Rodríguez-Longobardo, Celia, Ramírez-Adrados, Ana, Colina-Coca, Clara, Burgos-Postigo, Silvia, López-Torres, Olga, Fernández-Elías, Valentín E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10674902/
https://www.ncbi.nlm.nih.gov/pubmed/38004236
http://dx.doi.org/10.3390/nu15224841
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author Eroglu, Melike Nur
Rodríguez-Longobardo, Celia
Ramírez-Adrados, Ana
Colina-Coca, Clara
Burgos-Postigo, Silvia
López-Torres, Olga
Fernández-Elías, Valentín E.
author_facet Eroglu, Melike Nur
Rodríguez-Longobardo, Celia
Ramírez-Adrados, Ana
Colina-Coca, Clara
Burgos-Postigo, Silvia
López-Torres, Olga
Fernández-Elías, Valentín E.
author_sort Eroglu, Melike Nur
collection PubMed
description Many studies have tested intermittent fasting (IF) in athletes, but its effects on female CrossFit athletes remain relatively unexplored in the existing literature. The aim of this study was to evaluate and compare the effects of 24-h IF on the physical performance of female CrossFit practitioners. Eleven female CrossFit athletes (age: 30.91 ± 3.42, weight: 65.26 ± 7.55 kg, height: 1.66 ± 0.05 m) participated in the study. The study used a crossover design with fasting and eating conditions. Participants completed an exercise test, standing long jump, and handgrip strength assessment. Hydration status, heart rate, blood lactate, blood glucose, rates of perceived exertion, and hunger were measured. Results showed significant differences in blood lactate concentration (F = 5.435, p = 0.042, η2p = 0.352). Resting blood lactate concentration was significantly lower in the fasting trial than in the eating trial (p < 0.001), but post-exercise blood lactate concentrations were higher in the fasting trial than in the eating trial (p < 0.001). No differences were found in performance times (p > 0.05). In conclusion, this pilot study of females suggests that 24-h fasting does not impair exercise performance or negatively affect physiological parameters in CrossFit athletes.
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spelling pubmed-106749022023-11-20 The Effects of 24-h Fasting on Exercise Performance and Metabolic Parameters in a Pilot Study of Female CrossFit Athletes Eroglu, Melike Nur Rodríguez-Longobardo, Celia Ramírez-Adrados, Ana Colina-Coca, Clara Burgos-Postigo, Silvia López-Torres, Olga Fernández-Elías, Valentín E. Nutrients Article Many studies have tested intermittent fasting (IF) in athletes, but its effects on female CrossFit athletes remain relatively unexplored in the existing literature. The aim of this study was to evaluate and compare the effects of 24-h IF on the physical performance of female CrossFit practitioners. Eleven female CrossFit athletes (age: 30.91 ± 3.42, weight: 65.26 ± 7.55 kg, height: 1.66 ± 0.05 m) participated in the study. The study used a crossover design with fasting and eating conditions. Participants completed an exercise test, standing long jump, and handgrip strength assessment. Hydration status, heart rate, blood lactate, blood glucose, rates of perceived exertion, and hunger were measured. Results showed significant differences in blood lactate concentration (F = 5.435, p = 0.042, η2p = 0.352). Resting blood lactate concentration was significantly lower in the fasting trial than in the eating trial (p < 0.001), but post-exercise blood lactate concentrations were higher in the fasting trial than in the eating trial (p < 0.001). No differences were found in performance times (p > 0.05). In conclusion, this pilot study of females suggests that 24-h fasting does not impair exercise performance or negatively affect physiological parameters in CrossFit athletes. MDPI 2023-11-20 /pmc/articles/PMC10674902/ /pubmed/38004236 http://dx.doi.org/10.3390/nu15224841 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Eroglu, Melike Nur
Rodríguez-Longobardo, Celia
Ramírez-Adrados, Ana
Colina-Coca, Clara
Burgos-Postigo, Silvia
López-Torres, Olga
Fernández-Elías, Valentín E.
The Effects of 24-h Fasting on Exercise Performance and Metabolic Parameters in a Pilot Study of Female CrossFit Athletes
title The Effects of 24-h Fasting on Exercise Performance and Metabolic Parameters in a Pilot Study of Female CrossFit Athletes
title_full The Effects of 24-h Fasting on Exercise Performance and Metabolic Parameters in a Pilot Study of Female CrossFit Athletes
title_fullStr The Effects of 24-h Fasting on Exercise Performance and Metabolic Parameters in a Pilot Study of Female CrossFit Athletes
title_full_unstemmed The Effects of 24-h Fasting on Exercise Performance and Metabolic Parameters in a Pilot Study of Female CrossFit Athletes
title_short The Effects of 24-h Fasting on Exercise Performance and Metabolic Parameters in a Pilot Study of Female CrossFit Athletes
title_sort effects of 24-h fasting on exercise performance and metabolic parameters in a pilot study of female crossfit athletes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10674902/
https://www.ncbi.nlm.nih.gov/pubmed/38004236
http://dx.doi.org/10.3390/nu15224841
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