![]() ![]() One kilocalorie is the amount of heat needed to raise the temperature of one kilogram of water by 1☌. Metabolic heat production is measured in kilocalories (kcal) per hour. ![]() However, tables are available in literature showing metabolic rates for a variety of activities. Physical Activity: The production of body heat by physical activity (metabolic rate) is difficult to measure. The absorbed moisture “wicks” away (evaporates) which can accelerate heat loss through conduction. As humidity increases, more moisture from the air can be absorbed by clothing, which reduces its ability to insulate. Humidity (wetness): Air humidity is measured by a hygrometer in percent relative humidity (%RH).
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