Divisions of Cardiology and Clinical Epidemiology, Jewish General Hospital/McGill University, Montreal, Quebec, Canada.
Am J Med. 2011 Aug;124(8):747-55. doi: 10.1016/j.amjmed.2011.02.037.
Aerobic exercise is a common nonpharmacological intervention for the management of obesity. However, the efficacy of isolated aerobic exercise at promoting weight loss is unclear. We conducted a systematic review and meta-analysis to evaluate the efficacy of isolated aerobic exercise programs in overweight and obese populations.
We searched for published randomized controlled trial reports of aerobic exercise through January 20, 2010. Trials with an isolated aerobic exercise intervention were included. A random-effect model was used to synthesize the results of each intervention.
We identified 14 trials involving 1847 patients. The duration of aerobic exercise programs ranged from 12 weeks to 12 months. Results were pooled for programs with 6-month duration and programs with 12-month duration. Six-month programs were associated with a modest reduction in weight (weighted mean difference [WMD]=-1.6 kg; 95% confidence interval [CI], -1.64 to -1.56) and waist circumference (WMD=-2.12 cm; 95% CI, -2.81 to -1.44). Twelve-month programs also were associated with modest reductions in weight (WMD=-1.7 kg; 95% CI, -2.29 to -1.11) and waist circumference (WMD=-1.95 cm; 95% CI, -3.62 to -0.29).
Moderate-intensity aerobic exercise programs of 6-12 months induce a modest reduction in weight and waist circumference in overweight and obese populations. Our results show that isolated aerobic exercise is not an effective weight loss therapy in these patients. Isolated aerobic exercise provides modest benefits to blood pressure and lipid levels and may still be an effective weight loss therapy in conjunction with diets.
有氧运动是肥胖管理中常用的非药物干预措施。然而，单独进行有氧运动对减肥的疗效尚不清楚。我们进行了一项系统评价和荟萃分析，以评估单独进行有氧运动方案对超重和肥胖人群的疗效。
我们搜索了截至 2010 年 1 月 20 日发表的关于有氧运动的随机对照试验报告。纳入了单独进行有氧运动干预的试验。采用随机效应模型综合每个干预的结果。
我们确定了 14 项涉及 1847 名患者的试验。有氧运动方案的持续时间从 12 周到 12 个月不等。对持续 6 个月和 12 个月的方案进行了汇总。6 个月的方案与体重适度降低相关（加权均数差[WMD]=-1.6 kg；95%置信区间[CI]，-1.64 至-1.56）和腰围（WMD=-2.12 cm；95%CI，-2.81 至-1.44）。12 个月的方案也与体重适度降低相关（WMD=-1.7 kg；95%CI，-2.29 至-1.11）和腰围（WMD=-1.95 cm；95%CI，-3.62 至-0.29）。
6-12 个月的中等强度有氧运动方案可使超重和肥胖人群的体重和腰围适度降低。我们的结果表明，单独的有氧运动对这些患者不是一种有效的减肥疗法。单独的有氧运动对血压和血脂水平有适度的益处，与饮食结合可能仍然是一种有效的减肥疗法。
