Sauna exposure immediately prior to short-term heat acclimation accelerates phenotypic adaptation in females
Mee JA, Peters S, Doust JH, Maxwell NS
Journal of science and medicine in sport · 27 citas
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 independiente
- Universidad u hospital
- University of Brighton
Según 1 financiador declarado.
Publicación
- Publicado
- 2017-07-04 · J Sci Med Sport · vol. 21 · número 2 · págs. 190–195
- Editorial
- Elsevier BV
- Citado
- 35 citas · más que el 91% de estudios similares · 2.9× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 33 trabajos
- Acceso
- Lectura gratuita
- Áreas de investigación
- Thermoregulation and physiological responses · Cardiovascular and exercise physiology · Sports Performance and Training
- Palabras clave
- heat acclimation, plasma expansion, heart rate, thermal sensation, menstrual cycle, follicular phase, estradiol, progesterone, thermoregulatory adaptation, cardiovascular strain, perceived exertion, sweat rate, plasma volume
- MeSH
- sweat, humans, steam bath, cross-over studies, acclimatization, body temperature regulation, follicular phase, heart rate, running, time factors, adolescent, adult, female, young adult
4 autores
- Jessica A. Mee🇬🇧 · autor de correspondenciaBangor University; University of Brighton
- Sophie Peters🇬🇧University of Brighton
- Jonathan H. Doust🇬🇧University of Brighton
- Neil Maxwell🇬🇧University of Brighton
Resumen
El texto original del estudio, en el idioma en que se publicó.
Objectives
Investigate whether a sauna exposure prior to short-term heat acclimation (HA) accelerates phenotypic adaptation in females.
Design
Randomised, repeated measures, cross-over trial.
Methods
Nine females performed two 5-d HA interventions (controlled hyperthermia Tre≥38.5°C), separated by 7-wk, during the follicular phase of the menstrual cycle confirmed by plasma concentrations of 17-β estradiol and progesterone. Prior to each 90-min HA session participants sat for 20-min in either a temperate environment (20°C, 40% RH; HAtemp) wearing shorts and sports bra or a hot environment (50°C, 30% RH) wearing a sauna suit to replicate sauna conditions (HAsauna). Participants performed a running heat tolerance test (RHTT) 24-h pre and 24-h post HA.
Results
Mean heart rate (HR) (85±4 vs. 68±5 bpm, p≤0.001), sweat rate (0.4±0.2 vs. 0.0±0.0Lh-1, p≤0.001), and thermal sensation (6±0 vs. 5±1, p=0.050) were higher during the sauna compared to temperate exposure. Resting rectal temperature (Tre) (-0.28±0.16°C), peak Tre (-0.42±0.22°C), resting HR (-10±4 bpm), peak HR (-12±7 bpm), Tre at sweating onset (-0.29±0.17°C) (p≤0.001), thermal sensation (-0.5±0.5; p=0.002), and perceived exertion (-3±2; p≤0.001) reduced during the RHTT, following HAsauna; but not HAtemp. Plasma volume expansion was greater following HAsauna (HAsauna, 9±7%; HAtemp, 1±5%; p=0.013). Sweat rate (p≤0.001) increased and sweat NaCl (p=0.006) reduced during the RHTT following HAsauna and HAtemp.
Conclusions
This novel strategy initiated HA with an attenuation of thermoregulatory, cardiovascular, and perceptual strain in females due to a measurably greater strain in the sauna compared to temperate exposure when adopted prior to STHA.
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