Document Detail


Comparative studies on thermoregulatory responses to heat between Japanese Brazilians and Japanese.
MedLine Citation:
PMID:  1590876     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Eight male Japanese Brazilians (20-32 yrs) and 11 male Japanese (22-24 yrs) volunteered for this study. The Brazilians had been staying for about 2-21 weeks in Japan. Their physical characteristics are not significantly different from those of the Japanese. Each one of them sat on a chair for 45 min at 40 degrees C (R.H. 50%) in a climatic chamber. Then, they exercised using a bicycle ergometer in a semi-reclining position for 45 min at 40% of maximal oxygen uptake. Forearm blood flow (FBF), oxygen uptake (VO2), heart rate (HR), skin temperature (Tsk), sweat rate (SR) at chest region and body weight loss (delta Wt) were measured. Thermal sensation and thermal comfort were also measured. Thermal and comfort sensation confirmed that Japanese Brazilians felt cooler and more comfortable in 40 degrees C environment than the Japanese. VO2, SR and delta Wt for both groups were not significantly different. FBF and HR for Brazilians were significantly lower than those for Japanese. Tsk at chest region for Brazilians was found to be significantly higher than that for Japanese. Thus the thermoregulatory responses observed in Japanese Brazilians may be largely attributed to the climate in their native places located on the Tropic of Capricorn.
Authors:
T Katsuura; M E Tachibana; C F Lee; A Okada; Y Kikuchi
Related Documents :
8853276 - Blunting the rise in body temperature reduces muscle glycogenolysis during exercise in ...
11482556 - Whole-body pre-cooling does not alter human muscle metabolism during sub-maximal exerci...
7096136 - Thermoregulatory influences on common carotid blood flow in the dog.
8559796 - Measurement of physiological parameters and activity in a mongolian gerbil during gravi...
16558526 - Effects of strength training on strength development and joint position sense in functi...
18584296 - Noninvasive detection of the hemodynamic stress of exercise using the photoplethysmogram.
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Annals of physiological anthropology = Seiri Jinruigaku Kenkyūkai kaishi     Volume:  11     ISSN:  0287-8429     ISO Abbreviation:  Ann Physiol Anthropol     Publication Date:  1992 Mar 
Date Detail:
Created Date:  1992-06-26     Completed Date:  1992-06-26     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8506625     Medline TA:  Ann Physiol Anthropol     Country:  JAPAN    
Other Details:
Languages:  eng     Pagination:  105-11     Citation Subset:  IM    
Affiliation:
Department of Ergonomics, Faculty of Engineering, Chiba University.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adult
Body Temperature Regulation / physiology*
Brazil / ethnology
Hot Temperature*
Humans
Japan
Male

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Uteroplacental Doppler flow velocity waveform indices in normal pregnancy: a statistical exercise an...
Next Document:  Physiological anthropology in Japan