ENERGY EXPENDITURE, PHYSICAL ACTIVITY, AND OBESITY IN CHILDREN

摘要: The average 5-year-old child consumes close to a half-million calories per year. Despite this huge energy intake, most healthy children are able strike remarkable balance between expenditure, and storage for growth through precise homeostatic regulation. This regulation of metabolism is achieved over the long term despite large fluctuations in intake expenditure within days. accuracy precision by which body regulates highlighted fact that even small error system can have detrimental consequences time. If exceeds needs as little 105 kJ day, then time, person will become obese. achievement overall driven first law thermodynamics, states neither be destroyed nor created. principle necessitates that, when equals stores must remain constant. In children, process complicated additional growth. Obesity result mismatch needs, resulting net accumulation development obesity. Whether obesity caused excess or reduction physical activity unclear, however. article, influence on cause reviewed.