Individual variation in the relation between body temperature and energy expenditure in response to elevated ambient temperature

W. Marken Lichtenbelt, van, M.S. Westerterp-Plantenga, P. Hoydonk, van

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

The question we address here is whether a mild increase in environmental temperature affects body temperature and energy expenditure, focusing on the individual variation in the relation between energy expenditure and body temperature. We studied eight normal weight healthy females, 48 h at an ambient temperature of 22°C, and 48 h at 27°C. Energy expenditure (EE) was measured in a respiration chamber. Subjects' skin temperature was measured continuously from 8:00 a.m. until 12:00 p.m.: forehead, infraclavicular zone, thigh, hand, and foot. Core temperature was determined tympanically. Body composition was determined by under water weighing. Exposure to 27°C caused a significant increase in body temperature (both skin and core), a decrease in temperature gradients, and a decrease in energy expenditure. At 27°C 24 h EE, adjusted for body composition, was significantly related to body tympanic temperature. The decrease in 24 h EE, at 27°C ambient temperature, was significantly, negatively related to the increase in Ttym, indicating individual responses in adaptation to elevated ambient temperature. Changes in temperature gradient (comparing 27°C with 22°C) were negatively related to changes in EE. This shows that individuals differ in their response to an increase in environmental temperature regarding the relative contribution of insulative or metabolic adjustments.
Original languageEnglish
Pages (from-to)235-242
Number of pages8
JournalPhysiology & Behavior
Volume73
Issue number1-2
DOIs
Publication statusPublished - 2001

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Body Temperature
Energy Metabolism
Temperature
Body Composition
Forehead
Skin Temperature
Thigh
Foot
Respiration
Hand
Weights and Measures
Skin
Water

Cite this

Marken Lichtenbelt, van, W. ; Westerterp-Plantenga, M.S. ; Hoydonk, van, P. / Individual variation in the relation between body temperature and energy expenditure in response to elevated ambient temperature. In: Physiology & Behavior. 2001 ; Vol. 73, No. 1-2. pp. 235-242.
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abstract = "The question we address here is whether a mild increase in environmental temperature affects body temperature and energy expenditure, focusing on the individual variation in the relation between energy expenditure and body temperature. We studied eight normal weight healthy females, 48 h at an ambient temperature of 22°C, and 48 h at 27°C. Energy expenditure (EE) was measured in a respiration chamber. Subjects' skin temperature was measured continuously from 8:00 a.m. until 12:00 p.m.: forehead, infraclavicular zone, thigh, hand, and foot. Core temperature was determined tympanically. Body composition was determined by under water weighing. Exposure to 27°C caused a significant increase in body temperature (both skin and core), a decrease in temperature gradients, and a decrease in energy expenditure. At 27°C 24 h EE, adjusted for body composition, was significantly related to body tympanic temperature. The decrease in 24 h EE, at 27°C ambient temperature, was significantly, negatively related to the increase in Ttym, indicating individual responses in adaptation to elevated ambient temperature. Changes in temperature gradient (comparing 27°C with 22°C) were negatively related to changes in EE. This shows that individuals differ in their response to an increase in environmental temperature regarding the relative contribution of insulative or metabolic adjustments.",
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Individual variation in the relation between body temperature and energy expenditure in response to elevated ambient temperature. / Marken Lichtenbelt, van, W.; Westerterp-Plantenga, M.S.; Hoydonk, van, P.

In: Physiology & Behavior, Vol. 73, No. 1-2, 2001, p. 235-242.

Research output: Contribution to journalArticleAcademicpeer-review

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