basal metabolic rate energy expenditure energy requirements body composition breastfeeding doubly labeled water lactation sleeping metabolic rate total energy expenditure Human nutritiona and metabolism adolescents and paediatric body mass index carbohydrate oxidation deelopment development of an international growth standard fo dyslipidemia eating behavior energy and protein metabolism energy deposition energy rrequirements fat oxidation food intake gene-nutrient interactions growth growth references humans hypertension infants insulin resistance lipid oxidation obesity obesity and eating disorders physical activity physical activity level pregnancy pregnancy and lactation school-aged shildren substrate oxidation toddlers weight women