Dietary nitrate improves sprint performance and cognitive function during prolonged intermittent exercise
Thompson C, Wylie LJ, Fulford J, Kelly J, Black MI, McDonagh ST, Jeukendrup AE, Vanhatalo A, Jones AM
European journal of applied physiology · 107 citas
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
- Financiación independiente
- Gobierno
- National Institute for Health and Care Research
Según 1 financiador declarado.
Publicación
- Publicado
- 2015-04-06 · Eur J Appl Physiol · vol. 115 · número 9 · págs. 1825–1834
- Editorial
- Springer Science+Business Media
- Citado
- 154 citas · más que el 99% de estudios similares · 13.9× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 41 trabajos
- Acceso
- De pago
- Áreas de investigación
- Exercise and Physiological Responses · Cardiovascular and exercise physiology · Sports Performance and Training
- Palabras clave
- dietary nitrate, beetroot juice, repeated sprint performance, cognitive function, reaction time, team sports, exercise fatigue, nitric oxide
- MeSH
- humans, nitrates, treatment outcome, exercise, administration, oral, double-blind method, cognition, running, dietary supplements, athletic performance, physical exertion, young adult
9 autores
- Christopher Thompson🇬🇧University of Exeter
- Lee J. Wylie🇬🇧University of Exeter
- Jonathan Fulford🇬🇧University of Exeter; NIHR Exeter Clinical Research Facility
- JAMES A. KELLY🇬🇧University of Exeter
- Matthew I. Black🇬🇧University of Exeter
- Sinéad T. J. McDonagh🇬🇧University of Exeter
- Asker Erik Jeukendrup🇺🇸Gatorade Sports Science Institute
- Anni Vanhatalo🇬🇧University of Exeter
- ANDREW MARK JONES🇬🇧 · autor de correspondenciaUniversity of Exeter
Resumen
El texto original del estudio, en el idioma en que se publicó.
Unlabelled
It is possible that dietary nitrate (NO3 (-)) supplementation may improve both physical and cognitive performance via its influence on blood flow and cellular energetics.
Purpose
To investigate the effects of dietary NO3 (-) supplementation on exercise performance and cognitive function during a prolonged intermittent sprint test (IST) protocol, which was designed to reflect typical work patterns during team sports.
Methods
In a double-blind randomised crossover study, 16 male team-sport players received NO3 (-)-rich (BR; 140 mL day(-1); 12.8 mmol of NO3 (-)), and NO3 (-)-depleted (PL; 140 mL day(-1); 0.08 mmol NO3 (-)) beetroot juice for 7 days. On day 7 of supplementation, subjects completed the IST (two 40-min "halves" of repeated 2-min blocks consisting of a 6-s "all-out" sprint, 100-s active recovery and 20 s of rest), on a cycle ergometer during which cognitive tasks were simultaneously performed.
Results
Total work done during the sprints of the IST was greater in BR (123 ± 19 kJ) compared to PL (119 ± 17 kJ; P < 0.05). Reaction time of response to the cognitive tasks in the second half of the IST was improved in BR compared to PL (BR first half: 820 ± 96 vs. second half: 817 ± 86 ms; PL first half: 824 ± 114 vs. second half: 847 ± 118 ms; P < 0.05). There was no difference in response accuracy.
Conclusions
These findings suggest that dietary NO3 (-) enhances repeated sprint performance and may attenuate the decline in cognitive function (and specifically reaction time) that may occur during prolonged intermittent exercise.
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