title: The effect of a high protein-low calorie diet on the energy expenditure of obese adolescents.
abstract: Resting energy expenditure (REE), and body composition, as fat-free mass (FFM) and fat mass, were determined in seven obese adolescents before and after weight loss of a mean 13.5 kg on an approximately 800 kcal/d (3349 kJ), high protein reducing diet regimen. Ideal body weight decreased from 166% to 142% in 8 weeks. There were no significant changes in total body potassium (TBK), extracellular water (ECW), intracellular water (ICW) or total body water (TBW) with weight loss. The REE (kcal/d) fell from 2034 +/- 392 (8514 +/- 1641 kJ) to 1762 +/- 453 (7376 +/- 1896 kJ) with weight loss (P < 0.05). However, when the REE was expressed as kcal/body weight there was no difference between before and after weight loss, 21.4 +/- 2.8 (90 +/- 21 kJ) and 21.6 +/- 4.5 (90 +/- 19 kJ). Similarly, when REE was examined in relation to FFM (kcal/kg) before and after weight loss, there were also no significant differences: 34.6 +/- 5.1 (145 +/- 21 kJ) and 32.1 +/- 7.9 (134 +/- 33 kJ).
authors: Division of Gastroenterology and Nutrition, Children's Hospital of Philadelphia, PA 19104.
authors: V A
authors: VA
authors: Stallings
authors: P B
authors: PB
authors: Pencharz
mesh_terms: D000293:Adolescent; D017195:Adolescent Nutritional Physiological Phenomena; D001823:Body Composition; D001827:Body Height; D001835:Body Weight; D002648:Child; D004038:Diet, Reducing / Q000592:standards*; D004044:Dietary Proteins / Q000008:administration & dosage*; D002149:Energy Intake; D004734:Energy Metabolism; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D009765:Obesity / Q000178:diet therapy* / Q000378:metabolism / Q000517:prevention & control; D015431:Weight Loss
chemical_list: D004044:Dietary Proteins