Hypohydration and acute thermal stress affect mood state but not cognition or dynamic postural balance
Ely BR, Sollanek KJ, Cheuvront SN, Lieberman HR, Kenefick RW
European journal of applied physiology · 50 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
- Gobierno
- U.S. Department of Defense
Según 1 financiador declarado.
Publicación
- Publicado
- 2012-10-11 · Eur J Appl Physiol · vol. 113 · número 4 · págs. 1027–1034
- Editorial
- Springer Science+Business Media
- Citado
- 85 citas · más que el 89% de estudios similares · 2.6× el promedio de su campo
- Referencias
- 44 trabajos
- Acceso
- De pago
- Áreas de investigación
- Thermoregulation and physiological responses · Effects of Environmental Stressors on Livestock · Cardiovascular and exercise physiology
- Palabras clave
- hypohydration, acute heat stress, ambient temperature, mood, cognitive performance, dynamic balance, total mood disturbance, shivering, core body temperature, skin temperature, thermal sensation, fluid deficit
- MeSH
- humans, dehydration, heat stress disorders, physical examination, hyperthermia, induced, hypothermia, induced, analysis of variance, affect, cognition, psychomotor performance, reaction time, neuropsychological tests, military medicine, water-electrolyte balance, body temperature regulation, heat-shock response, time factors, adult, massachusetts, male, postural balance, young adult, thermosensing, cold-shock response
5 autores
- Brett Romano Ely🇺🇸U.S. Army Research Institute of Environmental Medicine; United States Army
- Kurt J. Sollanek🇺🇸U.S. Army Research Institute of Environmental Medicine; United States Army
- Samuel N. Cheuvront🇺🇸U.S. Army Research Institute of Environmental Medicine; United States Army
- Harris R. Lieberman🇺🇸U.S. Army Research Institute of Environmental Medicine; United States Army
- Robert William Kenefick🇺🇸 · autor de correspondenciaU.S. Army Research Institute of Environmental Medicine; United States Army
Resumen
El texto original del estudio, en el idioma en que se publicó.
Equivocal findings have been reported in the few studies that examined the impact of ambient temperature (T a) and hypohydration on cognition and dynamic balance. The purpose of this study was to determine the impact of acute exposure to a range of ambient temperatures (T(a) 10-40 °C) in euhydration (EUH) and hypohydration (HYP) states on cognition, mood and dynamic balance. Thirty-two men (age 22 ± 4 years, height 1.80 ± 0.05 m, body mass 85.4 ± 10.8 kg) were grouped into four matched cohorts (n = 8), and tested in one of the four T(a) (10, 20, 30, 40 °C) when EUH and HYP (-4 % body mass via exercise-heat exposure). Cognition was assessed using psychomotor vigilance, 4-choice reaction time, matching to sample, and grammatical reasoning. Mood was evaluated by profile of mood states and dynamic postural balance was tested using a Biodex Balance System. Thermal sensation (TS), core (T core) and skin temperature (T(sk)) were obtained throughout testing. Volunteers lost -4.1 ± 0.4 % body mass during HYP. T sk and TS increased with increasing T(a), with no effect of hydration. Cognitive performance was not altered by HYP or thermal stress. Total mood disturbance (TMD), fatigue, confusion, anger, and depression increased during HYP at all T(a). Dynamic balance was unaffected by HYP, but 10 °C exposure impaired balance compared to all other T(a). Despite an increase in TMD during HYP, cognitive function was maintained in all testing environments, demonstrating cognitive resiliency in response to body fluid deficits. Dynamic postural stability at 10 °C appeared to be hampered by low-grade shivering, but was otherwise maintained during HYP and thermal stress.
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.