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Journal of Nutrition and Metabolism
Volume 2010, Article ID 171490, 7 pages
Clinical Study

Energy Expenditure and Physical Activity in Recovering Malnourished Infants

1D & S Consulting Inc., 1 Horizon Rd, #1407, Fort Lee, NJ 07024, USA
2Department of Health Sciences, Lehman College, CUNY, 250 Bedford Park Blvd West, Bronx, NY 10468, USA

Received 4 June 2009; Revised 29 September 2009; Accepted 1 December 2009

Academic Editor: Maurizio Muscaritoli

Copyright © 2010 Russell Rising and Gul Tiryaki Sonmez. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background. Malnourished infants are small for age and weight. Objectives. Determine profiles in 24-hour energy metabolism in recovering malnourished infants and compare to similarly aged healthy controls. Methods. 10 malnourished infants (  cm, months) were healthy prior to spending 22 hours in the Enhanced Metabolic Testing Activity Chamber for measurement of EE (kcal/min), sleeping metabolic rate (SMR; kcal/min), respiratory quotient (RQ; / ), and physical activity (PA; oscillations in wt/min/kg body weight). Metabolic data were extrapolated to 24 hours (kcal/kg/d). Energy intake (kcal/kg/d) and the proportions (%) of carbohydrate, protein, and fat were calculated. Anthropometrics for malnourished infants were obtained. Statistical differences ( ) between groups were determined (SPSS, version 13). Results. In comparison to controls, malnourished infants were lighter ( versus  kg; ), had less body fat % ( versus ), and lower BMI ( versus ; ). In contrast, they had greater energy intake ( versus ; ) with a greater percentage of carbohydrates ( versus ; ). However, malnourished infants had greater 24-hour EE ( versus ; ), SMR ( versus ; ), and RQ ( versus ; ) along with a lower amount of PA ( versus ; ). Conclusions. Malnourished infants require more energy, possibly for growth.