Influence of dietary nitrate supplementation on local sweating and cutaneous vascular responses during exercise in a hot environment
Amano T, Okushima D, Breese BC, Bailey SJ, Koga S, Kondo N
European journal of applied physiology · 13 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
- Japan Society for the Promotion of Science
- Subvenciones
- Japan Society for the Promotion of Science (17H02153); Japan Society for the Promotion of Science (18H03146); Japan Society for the Promotion of Science (17J09854); Japan Society for the Promotion of Science (18K17875); Japan Society for the Promotion of Science (26882026); Japan Society for the Promotion of Science (15K14618)
Según 1 financiador declarado.
Publicación
- Publicado
- 2018-05-15 · Eur J Appl Physiol · vol. 118 · número 8 · págs. 1579–1588
- Editorial
- Springer Science+Business Media
- Citado
- 16 citas · más que el 76% de estudios similares · 1.0× el promedio de su campo
- Referencias
- 63 trabajos
- Acceso
- Acceso abierto (copia en repositorio)
- Áreas de investigación
- Thermoregulation and physiological responses · Cardiovascular and exercise physiology · Exercise and Physiological Responses
- Palabras clave
- dietary nitrate, beetroot juice, cutaneous vascular conductance, skin blood flow, exercise in the heat, blood pressure, nitrite, nitric oxide, thermoregulation
- MeSH
- skin, humans, beta vulgaris, nitrates, blood flow velocity, exercise, cross-over studies, double-blind method, environmental exposure, sweating, blood pressure, regional blood flow, time factors, dietary supplements, adult, japan, female, male, hot temperature, young adult, fruit and vegetable juices
6 autores
- Tatsuro Amano🇯🇵Kobe University; Niigata University
- Dai Okushima🇯🇵Kobe Design University
- Brynmor C. Breese🇬🇧University of Plymouth
- Stephen J. Bailey🇬🇧Loughborough University
- Shunsaku Koga🇯🇵Kobe Design University
- Narihiko Kondo🇯🇵 · autor de correspondenciaKobe University
Resumen
El texto original del estudio, en el idioma en que se publicó.
Purpose
We investigated the influence of inorganic nitrate ([Formula: see text]) supplementation on local sweating and cutaneous vascular responses during exercise in hot conditions.
Method
Eight healthy, young subjects were assigned in a randomized, double-blind, crossover design to receive [Formula: see text]-rich beetroot (BR) juice (140 mL/day, containing ~ 8 mmol of [Formula: see text]) and [Formula: see text]-depleted placebo (PL) juice (140 mL/day, containing ~ 0.003 mmol of [Formula: see text]) for 3 days. On day 3 of supplementation, subjects cycled at an intensity corresponding to 55% of [Formula: see text]O2max for 30 min in hot conditions (30 °C, 50% relative humidity). Chest and forearm sweat rate (SR) and skin blood flow (SkBF), were measured continuously. Cutaneous vascular conductance (CVC) was calculated by SkBF/mean arterial pressure (MAP).
Results
Prior to exercise, plasma [Formula: see text] (21 ± 6 and 581 ± 161 µM) and nitrite ([Formula: see text], 87 ± 28 and 336 ± 156 nM) concentrations were higher after BR compared to PL supplementation (P ≤ 0.011, n = 6). Oesophageal, mean skin, and mean body temperatures during exercise were not different between conditions. In addition, BR supplementation did not affect SR, SkBF, and CVC during exercise. A lower MAP was found after 30 min of exercise following BR supplementation (112 ± 6 and 103 ± 6 mmHg for PL and BR, respectively, P = 0.021).
Conclusion
These results suggest that inorganic [Formula: see text] supplementation, which increases the potential for O2-independent NO production, does not affect local sweating and cutaneous vascular responses, but attenuates blood pressure in young healthy subjects exercising in a hot environment.
Resumen vía Europe PMC. Los derechos de autor siguen siendo de los autores o la editorial.
Confianza de la comunidad
Cargando…
¿Cuánto confías en los hallazgos de este estudio?
Comentarios
¿Algo está mal aquí?
Señala este estudio si su información, etiquetas o financiación parecen incorrectas. Un editor revisa cada señalamiento.
Información educativa sobre investigación publicada. No es consejo médico ni una recomendación para empezar o dejar nada.