RT Journal Article T1 Physical activity, energy balance and obesity A1 Griera, José Luís A1 Manzanares, José María A1 Barbany, Montserrat A1 Contreras, José A1 Amigó, P A1 Salas-Salvadó, Jordi K1 Physical Activity K1 Energy K1 Obesity K1 Actividad física K1 Energía K1 Obesidad AB Obesity appears when energy intake exceeds energy expenditure. The most important variable compound of energy expenditure is physical activity. The global epidemics of obesity seem closely related to reduced physical activity and sedentariness widely increasing nowadays. Once obesity has developed, caloric intake becomes similar to energy expenditure. To lose weight, besides decreasing energy intake, energy expenditure must be increased. The promotion of physical activity is difficult and so the results of treatment of obesity are discouraging for doctors, other health professionals and patients. Proactive efforts from patients and health providers with an intensive feedback between them may be extremely helpful. Nevertheless, more studies are needed to provide better approaches on the role of physical activity for the prevention and treatment of obesity and for long-term weight-loss maintenance. PB Cambridge University Press SN 1368-9800 YR 2007 FD 2007-10 LK http://hdl.handle.net/10668/391 UL http://hdl.handle.net/10668/391 LA en NO Griera JL, Manzanares JM, Barbany M, Contreras J, Amigó P, Salas-Salvadó J. Physical activity, energy balance and obesity. Public Health Nutr. 2007 Oct;10(10A):1194-9. DS RISalud RD Apr 17, 2025