This review discusses key findings and recommendations related to the role of physical activity in weight gain prevention, weight loss, and weight-loss maintenance across the lifespan. For weight gain prevention, epidemiological and clinical studies suggest that regular physical activity is critical, with increases above the recommended 30 min daily for health (e.g., to 45 to 60 min daily) potentially desirable for curtailing weight gain. For weight loss, clinical studies suggest that physical activity interventions alone usually produce only modest results. Combining physical activity with dietary interventions increases the chance of success, especially at higher levels of physical activity (e.g., 200 to 300 min or more weekly). For weight-loss maintenance, high levels of physical activity (e.g., 40 to 90 min daily) may be necessary. To manage weight across the lifespan, a comprehensive approach to physical activity is needed supported by public policy interventions that help make physical activity a part of daily life.

中文翻译：

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在整个生命周期中进行体育锻炼和体重管理。

这篇综述讨论了与体育活动在整个生命周期中预防体重增加，减肥和维持体重减轻有关的关键发现和建议。对于体重增加的预防，流行病学和临床研究表明，定期进行体育锻炼至关重要，对于控制健康，每天增加建议的30分钟以上摄入量（例如，每天增加45至60分钟）可能是减少体重增加所希望的。对于减肥，临床研究表明，仅体育锻炼通常只能产生适度的结果。将体育锻炼与饮食干预相结合会增加成功的机会，尤其是在体育锻炼水平较高时（例如，每周200至300分钟或更长时间）。为了保持体重减轻，可能需要进行大量体育锻炼（例如每天40至90分钟）。