摘要: Objective To summarise the literature on energy requirements and aging. Design An analysis review of published data components expenditure total (TEE). Setting Data basal metabolic rate (BMR) TEE were obtained from US Institute Medicine National Academies database (all available studies before 2001, collected 20 researchers willing to provide individual subject results). Subjects Those individuals who 20-100 years age. Results physical activity level (PAL, defined as ratio resting expenditure) declined progressively throughout adult life in both normal weight overweight men women. In (defined body mass index (BMI) 18.5-25.0 kg m(-2)) fell by approximately 150 kcal per decade, PAL an average 1.75 second decade 1.28 ninth decade. Thermic effect feeding other indicated no consistent change associated with Conclusions Aging is progressive declines TEE, which have implications for defining dietary at different stages life.