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Thermal Sensitivity To Warmth During Rest and Exercise: A Sex Comparison.

Gerrett, Nicola and Ouzzahra, Y. and Coleby, S. and Hobbs, S. and Redortier, B. and Voelcker, T. and Havenith, G. (2014) Thermal Sensitivity To Warmth During Rest and Exercise: A Sex Comparison. European Journal of Applied Physiology, 114 (7). pp. 1451-1462. ISSN Print: 1439-6319 Online: 1439-6327

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Abstract

Purpose The study aimed to compare thermal sensation in response to a fixed warm stimulus across 31 body locations in resting and active males and females. Methods Twelve males (20.6 ± 1.0 yrs, 78.1 ± 15.6 kg, 180 ± 8.9 cm, 34.4 ± 5.2 ml•kg-1•min-1) and 12 females (20.6 ± 1.4 yrs, 62.9 ± 5.5 kg, 167 ± 5.7 cm, 36.5 ± 6.6 ml•kg-1•min-1) rested in a thermoneutral (22.2 ± 2.2°C, 35.1 ± 5.8% RH) room whilst a thermal probe (25 cm2), set at 40°C was applied in a balanced order to 31 locations across the body. Participants reported their thermal sensation 10 seconds after initial application. Following this, participants began cycling at 50% 〖"V" ̇"O" 〗_"2max" for 20 minutes, which was then lowered to 30% 〖"V" ̇"O" 〗_"2max" and the sensitivity test repeated. Results Females had significantly warmer magnitude sensations than males at all locations (4.7 ± 1.8 vs 3.6 ± 2.2, p<0.05, respectively). Regional differences in thermal sensation were evident but were more prominent for females. Thermal sensation was greatest at the head then the torso and declined towards the extremities. In comparison to rest, exercise caused a significant reduction in thermal sensation for males (∆thermal sensation; 0.86 ± 0.3, p<0.05) but only at select locations in females (0.31 ± 0.56, p>0.05). Conclusion The data provides evidence that the thermal sensation response to warmth varies between genders and between body regions and reduces during exercise. These findings have important implications for clothing design and thermophysiological modelling

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Uncontrolled Keywords: warm sensation, body mapping, gender, exercise, regional, thermal sensitivity
Subjects: Q Science > QP Physiology
Divisions: Academic Departments > Institute of Sport and Exercise Science
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Depositing User: Nicola Gerrett
Date Deposited: 03 Jul 2014 14:50
Last Modified: 23 Jul 2015 21:01
URI: https://eprints.worc.ac.uk/id/eprint/3167

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