Modulation of muscle metaboreceptor activation upon sweating and cutaneous vascular responses to rising core temperature in humans
Amano T, Ichinose M, Inoue Y, Nishiyasu T, Koga S, Kondo N
American journal of physiology. Regulatory, integrative and comparative physiology · 11 citas
Cómo se estudió
- Diseño
- Ensayo clínico controlado (clasificado por nuestro filtro de IA)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación independiente
- Gobierno
- Japan Society for the Promotion of Science
- Gobierno
- Japan Society for the Promotion of Science (JSPS)
- Subvenciones
- Japan Society for the Promotion of Science (23300231); Japan Society for the Promotion of Science (23247046); Japan Society for the Promotion of Science (26882026)
Según 2 financiadores declarados.
Publicación
- Publicado
- 2015-04-09 · Am J Physiol Regul Integr Comp Physiol · vol. 308 · número 12 · págs. R990–R997
- Editorial
- American Physiological Society
- Citado
- 11 citas · más que el 79% de estudios similares · 1.3× el promedio de su campo
- Referencias
- 52 trabajos
- Acceso
- De pago
- Áreas de investigación
- Thermoregulation and physiological responses · Infrared Thermography in Medicine · Heart Rate Variability and Autonomic Control
- Palabras clave
- Forearm, Isometric exercise, Thermoregulation, Vasodilation, Medicine, Core temperature, Perfusion, Peripheral, Core (optical fiber), Internal medicine, Stimulation, Endocrinology, Chemistry, Cardiology, Anesthesia, Anatomy, Materials science
- MeSH
- muscle, skeletal, skin, humans, ischemia, water, reflex, hand strength, immersion, signal transduction, body temperature regulation, sweating, regional blood flow, vasodilation, muscle contraction, time factors, female, male, hot temperature, sensory receptor cells, young adult
6 autores
- Tatsuro Amano🇯🇵Kobe University
- Masashi Ichinose🇯🇵Meiji University
- Yoshimitsu Inoue🇯🇵Osaka International University
- Takeshi Nishiyasu🇯🇵University of Tsukuba
- Shunsaku Koga🇯🇵Kobe Design University
- Narihiko Kondo🇯🇵 · autor de correspondenciaKobe University
Resumen
El texto original del estudio, en el idioma en que se publicó.
The present study investigated the role of muscle metaboreceptor activation on human thermoregulation by measuring core temperature thresholds and slopes for sweating and cutaneous vascular responses during passive heating associated with central and peripheral mechanisms. Six male and eight female subjects inserted their lower legs into hot water (43°C) while wearing a water perfusion suit on the upper body (34°C). One minute after immersion, an isometric handgrip exercise--40% of maximum voluntary contraction-was conducted for 1.5 min in both control and experimental conditions, while postexercise occlusion was performed in the experimental condition only for 9 min. The postexercise forearm occlusion during passive heating consistently stimulated muscle metaboreceptors, as implicated by significantly elevated mean arterial blood pressure throughout the experimental period (P <0.05). Stimulation of the forearm muscle metaboreceptors increased sweating and cutaneous vascular responses during passive heating, and was associated with significant reductions in esophageal temperature threshold of sweating and cutaneous vasodilation (Δ threshold, sweating: 0.33 ± 0.05 and 0.16 ± 0.04°C, cutaneous vascular conductance: 0.38 ± 0.08 and 0.16 ± 0.05°C for control and experimental groups, respectively, P < 0.05). The slopes of these responses were not different between the conditions. These results suggest that muscle metaboreceptor activation in the forearm accelerates sweating and cutaneous vasodilation during passive heating associated with a reduction in core temperature thresholds and may be related to central mechanisms controlling heat loss responses.
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