The Effectiveness of Nonsurgical Interventions for Weight Loss Maintenance in Adults: An Updated, GRADE-Assessed Systematic Review and Meta-Analysis of Randomized Clinical Trials.
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Abstract
Context: Today, there are many discussions about the best way to maintain weight and prevent weight regain after a period of weight loss.
Objectives: The aim of this study was to summarize, based on data from randomized clinical trials (RCTs), the impact of nonsurgical interventions for adults' weight loss maintenance.
Data sources: The Medline (PubMed), Scopus, and Web of Science databases were reviewed during June 2023.
Data extraction: Meta-analyses assessing the impacts of nonsurgical interventions for weight loss maintenance were conducted. Effect sizes of nutritional interventions were recalculated by applying a random-effects model. The Grading of Recommendations, Assessment, Development, and Evaluation framework was implemented to determine evidence certainty.
Results: Meta-analysis of data from a total of 56 RCTs (n = 13 270 participants) represented a significant weight reduction after behavior and lifestyle interventions (mean difference [MD], -0.64 kg [95% CI, -1.18 to -0.09]; I2 = 89.5%; P < .001 for heterogeneity). Pharmacological interventions had also a significant effect on weight change during the weight maintenance phase (MD, -2.57 kg [95% CI, -3.12 to -2.02]; I2 = 91.6%; P < .001 for heterogeneity). The weight loss reduction from pharmacological interventions was greater with sibutramine (MD, -2.57; 95% CI: -3.12 to -2.02). Additionally, diet intervention and dietary and physical activity strategies were associated with a negligible trending decrease in weigh regain (respectively: MD, -0.91 kg [95% CI, -2.18 to 0.36], I2 = 55.7%, P = .016 for heterogeneity; and MD, -0.3 kg [95% CI, -4.13 to 3.52], I2 = 94.1%, P < .001).
Conclusion: The findings of this review indicate there is a favorable impact of behavior-based interventions and antiobesity medications on weight maintenance.
Systematic review registration: PROSPERO registration no CRD42023468056.
期刊介绍：
Nutrition Reviews is a highly cited, monthly, international, peer-reviewed journal that specializes in the publication of authoritative and critical literature reviews on current and emerging topics in nutrition science, food science, clinical nutrition, and nutrition policy. Readers of Nutrition Reviews include nutrition scientists, biomedical researchers, clinical and dietetic practitioners, and advanced students of nutrition.
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