caa a22 4500 445367512 CHVBK 20180317142935.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s00484-010-0358-5 doi (NATIONALLICENCE)springer-10.1007/s00484-010-0358-5 Comparison of thermoregulatory responses to heat between Malaysian and Japanese males during leg immersion [Elektronische Daten] [Titis Wijayanto, Hitoshi Wakabayashi, Joo-Young Lee, Nobuko Hashiguchi, Mohamed Saat, Yutaka Tochihara] The objective of this study was to investigate thermoregulatory responses to heat in tropical (Malaysian) and temperate (Japanese) natives, during 60min of passive heating. Ten Japanese (mean ages: 20.8 ± 0.9years) and ten Malaysian males (mean ages: 22.3 ± 1.6years) with matched morphological characteristics and physical fitness participated in this study. Passive heating was induced through leg immersion in hot water (42°C) for 60min under conditions of 28°C air temperature and 50% RH. Local sweat rate on the forehead and thigh were significantly lower in Malaysians during leg immersion, but no significant differences in total sweat rate were observed between Malaysians (86.3 ± 11.8gm−2h−1) and Japanese (83.2 ± 6.4gm−2h−1) after leg immersion. In addition, Malaysians displayed a smaller rise in rectal temperature (0.3 ± 0.1°C) than Japanese (0.7 ± 0.1°C) during leg immersion, with a greater increase in hand skin temperature. Skin blood flow was significantly lower on the forehead and forearm in Malaysians during leg immersion. No significant different in mean skin temperature during leg immersion was observed between the two groups. These findings indicated that regional differences in body sweating distribution might exist between Malaysians and Japanese during heat exposure, with more uniform distribution of local sweat rate over the whole body among tropical Malaysians. Altogether, Malaysians appear to display enhanced efficiency of thermal sweating and thermoregulatory responses in dissipating heat loss during heat loading. Thermoregulatory differences between tropical and temperate natives in this study can be interpreted as a result of heat adaptations to physiological function. ISB, 2010 Thermoregulatory response nationallicence Heat acclimatization nationallicence Body temperature nationallicence Thermal sweating nationallicence Wijayanto Titis Department of Ergonomics, Faculty of Design, Kyushu University, 4-9-1, Shiobaru, Minami-ku, 815-8540, Fukuoka, Japan aut Wakabayashi Hitoshi Department of Ergonomics, Faculty of Design, Kyushu University, 4-9-1, Shiobaru, Minami-ku, 815-8540, Fukuoka, Japan aut Lee Joo-Young Department of Ergonomics, Faculty of Design, Kyushu University, 4-9-1, Shiobaru, Minami-ku, 815-8540, Fukuoka, Japan aut Hashiguchi Nobuko Department of Health Science, Faculty of Medicine, Kyushu University, 812-8581, Fukuoka, Japan aut Saat Mohamed School of Health Science, Universiti Sains Malaysia, Penang, Malaysia aut Tochihara Yutaka Department of Ergonomics, Faculty of Design, Kyushu University, 4-9-1, Shiobaru, Minami-ku, 815-8540, Fukuoka, Japan aut International Journal of Biometeorology Springer-Verlag 55/4(2011-07-01), 491-500 0020-7128 55:4<491 2011 55 484 https://doi.org/10.1007/s00484-010-0358-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00484-010-0358-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wijayanto Titis Department of Ergonomics, Faculty of Design, Kyushu University, 4-9-1, Shiobaru, Minami-ku, 815-8540, Fukuoka, Japan aut NATIONALLICENCE 700 1- Wakabayashi Hitoshi Department of Ergonomics, Faculty of Design, Kyushu University, 4-9-1, Shiobaru, Minami-ku, 815-8540, Fukuoka, Japan aut NATIONALLICENCE 700 1- Lee Joo-Young Department of Ergonomics, Faculty of Design, Kyushu University, 4-9-1, Shiobaru, Minami-ku, 815-8540, Fukuoka, Japan aut NATIONALLICENCE 700 1- Hashiguchi Nobuko Department of Health Science, Faculty of Medicine, Kyushu University, 812-8581, Fukuoka, Japan aut NATIONALLICENCE 700 1- Saat Mohamed School of Health Science, Universiti Sains Malaysia, Penang, Malaysia aut NATIONALLICENCE 700 1- Tochihara Yutaka Department of Ergonomics, Faculty of Design, Kyushu University, 4-9-1, Shiobaru, Minami-ku, 815-8540, Fukuoka, Japan aut NATIONALLICENCE 773 0- International Journal of Biometeorology Springer-Verlag 55/4(2011-07-01), 491-500 0020-7128 55:4<491 2011 55 484 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer