24-h evaporative and sensible heat losses in relation to ambient humidity at 24 degrees C in clothed human subjects.
The effect of ambient humidity on the energy expenditure of clothed subjects was investigated. Fifty-six healthy men and women, weighing about 65 kg, spent 24 h in a large human calorimeter at 24 degrees C and performed either of two fixed activity programmes. The ambient humidity varied between experiments from 3 to 11 g m-3. The sensible heat output did not vary significantly with humidity but the evaporative heat loss decreased by about 1.5 W for each g m-3 increase in humidity.
D000293:Adolescent; D000328:Adult; D001833:Body Temperature Regulation; D002151:Calorimetry; D003020:Clothing; D004734:Energy Metabolism; D006801:Humans; D006813:Humidity; D008875:Middle Aged; D005082:Physical Exertion; D013696:Temperature; D013997:Time Factors; D014835:Volatilization