Influence of milk cold on 24 h energy expenditure, resting metabolism and diet-induced thermogenesis
Energy expenditure of 9 women was continuously measured for 30 hours in a whole-body calorimeter at 28 degrees (comfortably warm) and also at 22 degrees (cool). Heat production was significantly higher at the lower temperature, increasing from 2-12%. Total heat loss increased by 6% with the colder e...
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Veröffentlicht in: | British journal of nutrition 1981, Vol.45 (2), p.257-267 |
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Sprache: | eng |
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Zusammenfassung: | Energy expenditure of 9 women was continuously measured for 30 hours in a whole-body calorimeter at 28 degrees (comfortably warm) and also at 22 degrees (cool). Heat production was significantly higher at the lower temperature, increasing from 2-12%. Total heat loss increased by 6% with the colder environment; sensitive heat loss increased by 29% and evaporative heat loss decreased by 39%. Resting metabolic rate measured 12 hours after the last meal was significantly higher at 22 degrees, but no difference was observed if measurements were taken 2-5 hours following a meal. Thus, environmental temperature appears to play an important role in energy balance. A reduction in ambient temperature of only 6 degrees caused an increase in 24 hour energy expenditure. These findings also suggest that cold-induced (thermoregulatory) thermogenesis was partially replaced by diet-induced thermogenesis. |
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ISSN: | 0007-1145 1475-2662 |