The effects of dietary nitrate supplementation on the adaptations to sprint interval training in previously untrained males
Muggeridge DJ, Sculthorpe N, James PE, Easton C
Journal of science and medicine in sport · 24 citas
Etiquetas de revisión
Financiación no declaradaDatos neutrales que nuestra revisión registró sobre cómo se hizo este estudio. Describen el método, nunca si nos gusta el resultado.
Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación no declarada
Publicación
- Publicado
- 2016-05-23 · J Sci Med Sport · vol. 20 · número 1 · págs. 92–97
- Editorial
- Elsevier BV
- Citado
- 32 citas · más que el 97% de estudios similares · 7.7× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 28 trabajos
- Acceso
- Acceso abierto (copia en repositorio)
- Áreas de investigación
- Cardiovascular and exercise physiology · Sports Performance and Training · Exercise and Physiological Responses
- Palabras clave
- nitrate supplementation, sprint interval training, training effects, untrained men, VO2max, ventilatory threshold, fatigue index, high-intensity exercise performance
- MeSH
- humans, nitrates, exercise test, adaptation, physiological, oxygen consumption, muscle fatigue, dietary supplements, adult, male, young adult, high-intensity interval training
4 autores
- David J. Muggeridge🇬🇧University of the West of Scotland
- Nicholas F. Sculthorpe🇬🇧University of the West of Scotland
- Philip Eurig James🇬🇧Cardiff University
- Chris Easton🇬🇧 · autor de correspondenciaUniversity of the West of Scotland
Resumen
El texto original del estudio, en el idioma en que se publicó.
Objectives
Dietary nitrate can improve repeated high-intensity and supramaximal exercise performance, although the effect on adaptations to training has received limited attention. The purpose of this study was to investigate the effects of dietary nitrate on the response to 3-weeks of sprint interval training (SIT).
Design
Randomized control trial.
Methods
Twenty-seven untrained males (Age: 28±7 y, V⋅O2Max: 42±7mlkg-1min-1) completed an incremental exercise test at the beginning and end of the study. Participants were matched for V⋅O2Max and randomly assigned to a control group (CON; n=8), SIT+placebo group (PLA; n=10), or SIT+nitrate group (NIT; n=9). The SIT comprised 4-6 repeated 15 s all out sprints on a cycle ergometer, interspersed with 4min active recovery, 3-times per week. Approximately 2.5h prior to exercise, participants consumed gels containing ∼0.1mmol (PLA) or ∼8mmol nitrate (NIT).
Results
Following SIT, V⋅O2Max (PLA: 5%, p=0.057, d=0.34; NIT: 6.3%, p=0.041, d=0.34) and ventilatory threshold (VT) increased to a similar extent in both SIT groups. Maximum work rate tended to increase to a greater extent in NIT (8.7%, d=0.55) compared to PLA (4.7%, d=0.31, p=0.073). Fatigue index, calculated by the change in mean power from the first to the last sprint, tended to be reduced following SIT in NIT compared to PLA (PLA: 7.3±7.4%, NIT: 0.5±7.1%, p=0.058).
Conclusions
While dietary nitrate supplementation does not augment improvements to V⋅O2Max and VT following SIT, it may improve WRmax and indices of repeated high-intensity exercise.
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