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American Journal of Clinical Nutrition, Vol 60, 849-854, Copyright © 1994 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Reproducible measurement of postprandial energy expenditure in young healthy males

M Dabbech, R Aubert, M Apfelbaum and A Boulier
INSERM U 286 Faculte Xavier Bichat, Paris, France.

The reproducibility of measurements of postprandial energy expenditure (PEE) was determined by assessing, for 345 min, the diet-induced thermogenesis (DIT) of a 4055-kJ mixed meal in 10 lean young men on four occasions. The DIT was determined by using either a 20-min premeal baseline metabolic rate (method 1) or a single resting metabolic rate (RMR) measured on a separate day (method 2). The DIT, in kilojoules, for a given subject calculated by method 1 varied significantly between occasions, CV 15.4% (P < 0.05). The D peak (PEE peak minus baseline) did not vary significantly between the four trials (CV 13%). The results obtained by using method 2 were much more reproducible for both the DIT (CV 4.2%) and the D peak (CV 4.8%). Thus, the reproducibility of the PEE measurement is enhanced by using an RMR measured on a separate day and by using the postprandial peak value instead of the DIT.


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Copyright © 1994 by The American Society for Nutrition