Changes in human body composition during calorie restriction with two levels of protein

• Published in: Nutrition research (New York, N.Y.) Vol. 13; no. 4; pp. 407 - 415
• Main Authors: Johnson, Herman L., Van Loan, Marta D., Belko, Amy Z., Barbieri, Teresa F., Mayclin, Patrick L., Virk, Satinder P.S.
• Format: Journal Article
• Language: English
• Published: New York, NY Elsevier Inc 01.04.1993; Elsevier Science
• Subjects: ABSORCION DE SUBSTANCIAS NUTRITIVAS; ABSORPTION DE SUBSTANCES NUTRITIVES; AGUA METABOLICA; Biological and medical sciences; DIETA; EAU METABOLIQUE; EXPERIMENTATION; EXPERIMENTOS; Extracellular fluid; Fat mass; FEMME; Lean body mass; LIQUIDE BIOLOGIQUE; LIQUIDOS CORPORALES; Medical sciences; Miscellaneous; MUJERES; Obese women; PERDIDA DE PESO; PERTE DE POIDS; PESO; POIDS; PROTEINAS; PROTEINE; Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects); REDUCCION DEL PESO; REGIME ALIMENTAIRE; REGIME POUR REDUCTION DE POIDS; TEJIDO ADIPOSO; TISSU ADIPEUX; Total body water; VALEUR CALORIQUE; VALOR CALORICO; Weight loss; Lean body mass; Extracellular fluid; Obese women; Fat mass; Total body water; Weight loss; Human; Obesity; Energy metabolism; Nutrition; Body weight; Body composition; Feeding; Proteins; Energy balance; Diet therapy; Female; Restricted diet; Macronutrient; Low calorie diet
• ISSN: 0271-5317; 1879-0739
• DOI: 10.1016/S0271-5317(05)80705-5

Four women (140–160% of ideal weight, 32–42 yr old) were monitored for 6 weeks of weight maintenance, 12 weeks of calorie restriction (1000–1200 kcal/day) and 6 weeks of maintaining reduced body weights. To observe the effects of dietary protein levels in the weight reducing diet upon changes in body composition and energy stores, the restriction diet of two women was reduced 50% for all macronutrients while that of the remaining two women was reduced about 60% in fat and carbohydrate while maintaining the protein intake at the prerestriction level. Body composition changes were monitored with bioelectrical analyzers as well as the traditional density and deuterium dilution techniques. Maintaining daily protein intakes at the prerestriction quantities did not affect lean body tissue losses nor body weight losses, 9.6 to 19.0kg/person for the study. Minimal changes in resting metabolic rates were consistent with minimal changes in lean body mass. The total body electrical conductivity instrument (TOBEC) 3 and the underwater weighing-density method yielded similar body composition changes during weight loss.