The Influence of Age on Thermosensitivity During Cold Water Immersion
| Autor: | Ellen L. Glickman, Mark Blegen, Christopher C. Cheatham, N Caine, E S. Potkanowicz |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Adult
Male Aging medicine.medical_specialty Esophageal temperature Younger age Cold exposure Physical Therapy Sports Therapy and Rehabilitation Hypothermia Biology Core temperature Body Temperature Esophagus Animal science Immersion Humans Medicine Orthopedics and Sports Medicine business.industry Significant difference Public Health Environmental and Occupational Health Skin temperature Thermogenesis Middle Aged Surgery Cold Temperature Water immersion Emergency Medicine Metabolic heat production business Body Temperature Regulation |
| Zdroj: | Wilderness & Environmental Medicine. 13:194-202 |
| ISSN: | 1080-6032 |
| DOI: | 10.1580/1080-6032(2002)013[0194:tioaot]2.0.co;2 |
| Popis: | This investigation evaluated the influence of older age (OLD) vs younger age (YNG) on thermosensitivity and metabolic heat production (HP) during cold water immersion (20 degrees C) in 15 YNG (22.7 +/- 2.7 years) vs 7 OLD (41.7 +/- 2.7 years) individuals.After a 20-minute baseline (BASE) period, subjects were immersed in 20 degrees C water until esophageal temperature (Tes) reached 36.5 degrees C, or for a maximum preocclusion (pre-OCC) time of 40 minutes. Arm and thigh cuffs were then inflated to 180 and 220 mm Hg, respectively, for 10 minutes (termed "occlusion" [OCC]). After release of the inflated cuffs (postocclusion [post-OCC]), the slope (beta) of the relationship between the decrease in Tes and the increase in HP was used to quantify thermosensitivity.Analysis of variance showed no significant difference in thermosensitivity between OLD and YNG (OLD = 2.25 +/- 1.72 W x kg(-1) x degrees C(-1) vs YNG = 3.56 +/- 1.53 W x kg(-1) x degrees C(-1)). No significant differences (P.05) were found for mean skin temperature (Tsk; OLD = 23.8 degrees C +/- 0.31 degrees C vs YNG = 24.2 degrees C +/- 0.19 degrees C), HP (P.05; OLD = 3.10 +/- 0.38 W x kg(-1) vs YNG = 2.50 +/- 0.22 W x kg(-1)), or Tes (OLD = 36.61 degrees C +/- 0.11 degrees C vs YNG = 36.74 degrees C +/- 0.06 degrees C).Therefore, these data demonstrate that when faced with a cold challenge, there is a similar response in beta, HP, Tes, and Tsk between OLD and YNG individuals. |
| Databáze: | OpenAIRE |
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