Financiado en parte por U.S. Highbush Blueberry Council, United States Highbush Blueberry Council
Blueberry supplementation reduces the blood lactate response to running in normobaric hypoxia but has no effect on performance in recreational runners
Brandenburg JP, Giles LV
Journal of the International Society of Sports Nutrition · 6 citas
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Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
- Consumo medido con
- No se indica
Quién lo pagó
- Financiación
- Financiado por la industria
- Grupo de la industria
- U.S. Highbush Blueberry Council
- Grupo de la industria
- United States Highbush Blueberry Council
Según 2 financiadores declarados y la declaración de financiación del texto completo.
Publicación
- Publicado
- 2021-01-02 · J Int Soc Sports Nutr · vol. 18 · número 1 · pág. 26
- Editorial
- Springer Science+Business Media
- Citado
- 11 citas · más que el 78% de estudios similares · 1.1× el promedio de su campo
- Referencias
- 33 trabajos
- Acceso
- Acceso abierto (revista) · CC-BY
- Áreas de investigación
- Exercise and Physiological Responses · High Altitude and Hypoxia · Sports Performance and Training
- Palabras clave
- anthocyanins, normobaric hypoxia, blood lactate, running performance, recreational runners, oxidative stress, antioxidant supplementation, post-exercise recovery, exhaled nitric oxide, heart rate, oxygen saturation, rating of perceived exertion
- MeSH
- saliva, humans, oxygen, lactic acid, anthocyanins, exercise test, cross-over studies, double-blind method, perception, oxidative stress, heart rate, physical endurance, running, dietary supplements, adult, female, male, athletic performance, young adult, performance-enhancing substances, biomarkers, hypoxia, blueberry plants
2 autores
- Jason P. Brandenburg🇨🇦 · autor de correspondenciaUniversity of the Fraser Valley
- Luisa V. Giles🇨🇦University of the Fraser Valley
Resumen
El texto original del estudio, en el idioma en que se publicó.
Background
Blueberries are concentrated with anthocyanins possessing antioxidant properties. As these properties counter fatigue, blueberry supplementation may improve performance and recovery, particularly in hypoxia, where oxidative stress is elevated.
Methods
This study examined the effects of blueberry supplementation on running performance, physiological responses, and recovery in normobaric hypoxia. Eleven experienced runners completed a 30-minute time-trial (TT) in normobaric hypoxia (%O2 = 15.5 %) on separate days after supplementation with four days of blueberries (BLU) or four days of placebo (PLA). Heart rate (HR), oxygen saturation (SaO2) and ratings of perceived exertion (RPE) were monitored during the TT. Blood lactate and fraction of exhaled nitric oxide (FENO) were assessed pre-TT, post-TT, and during recovery.
Results
No significant differences were observed in the distance run during the TT, HR, SaO2, and RPE. The post-TT increase in blood lactate was significantly lower in BLU than PLA (p = 0.036). Pre-TT and post-TT FENO did not differ between conditions. Blood lactate recovery following the TT was similar between conditions.
Conclusions
Four days of blueberry supplementation did not alter running performance or cardiovascular and perceptual responses in normobaric hypoxia. Supplementation lowered the blood lactate response to running, however, the significance of this finding is uncertain given the absence of an ergogenic effect.
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