Resting Metabolism in Conditions of Air Temperature between 20 and 28°C

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  • 気温20～28°Cにおける安静時代謝量
  • キオン 20 28ドC ニ オケル アンセイジ タイシャリョウ エイブン

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Eight male and six female students, wearing only shorts in male or Bikini swimming suits in female, were exposed to 20, 22, 24, 26 and 28°C in a climatic chamber for 60min in sitting posture on separate days. Air velocity was less than 20cm/sec and relative humidity was 50%. Metabolic rate, rectal temperature, mean skin temperature, heart rate and sweat rate were measured. Measurements between the 55th and 60th min of exposure were used for statistical analyses.<br>The analysis of variance comfirmed a significant effect of air temperature on metabolic rate. Metabolic rates at 24 and 26°C were significantly lower than that at 20, 22 and 28°C. The regression analysis disclosed that the relationships between metabolic rate and air temperature or mean skin temperature were curved. According to these parabolic regression equations of metabolic rate on air temperature or mean skin temperature, the minimal value of metabolic rate will be obtained when air temperature would become about 25°C or mean skin temperature would become about 32°C.

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