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Whole-body calorimetry studies in adult men

2. The interaction of exercise and over-feeding on the thermic effect of a meal

Published online by Cambridge University Press:  09 March 2007

Helen M. Dallosso  and
W. P. T. James
Helen M. Dallosso
Affiliation:
Medical Research Council Dunn Clinical Nutrition Centre, Addenbrooke's Hospital, Trumpington Street, Cambridge CE2 1QU
W. P. T. James
Affiliation:
Medical Research Council Dunn Clinical Nutrition Centre, Addenbrooke's Hospital, Trumpington Street, Cambridge CE2 1QU
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Abstract

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1. Studies have claimed that an enhancement of the thermic effect of a meal (TEM) is an important adaptive mechanism to account for energy wastage during over-feeding.

2. Eight healthy normal-weight young men were studied during 1 week on a weight-maintenance diet and again during 1 week when they were over-fed by 50% with fat. During each experimental week, the subject occupied a whole-body indirect calorimeter at 26° for two separate periods of 36 h. The periods differed in the amount of exercise they contained. The thermic responses to the identical meals were measured during rest on one occasion and during exercise on a bicycle ergometer on the other.

3. On the maintenance diet the absolute TEM (kJ/min) was 1.51 (SD 0.42) at rest and 1.31 (SD 0.75) during exercise (no significant difference). The equivalent values (kJ/min) on the over-feeding diet were 2.2 (SD 0.48) and 1.97 (SD 0.64) (no significant difference).

4. The absence of a significant interaction between TEM and exercise was also demonstrated by the fact that the effect of over-feeding on total 24 h energy expenditure was unaffected by the subject's level of physical activity while in the calorimeter.

5. In conclusion, the present study has provided no evidence to support the hypothesis that TEM is enhanced during exercise.

Type
Papers of direct relevance to Clinical and Human Nutrition
Information
British Journal of Nutrition , Volume 52 , Issue 1 , July 1984 , pp. 65 - 72
Copyright
Copyright © The Nutrition Society 1984

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