The effects of CrossFit® training in adults with obese or overweight: A systematic review of randomized controlled trials

IF 0.9 Q4 PRIMARY HEALTH CARE

Medicina de Familia-SEMERGEN Pub Date : 2025-05-09 DOI:10.1016/j.semerg.2025.102512

N. Blanco-Martínez , D. González-Devesa , M.A. Sanchez-Lastra , J.C. Diz-Gómez , C. Ayán-Pérez

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Abstract

This systematic review and meta-analysis aimed to examine and critically analyze evidence on the effects of CrossFit® in individuals with overweight or obesity. A search was conducted in four databases (Scopus, WOS, SPORTDiscus, and MEDLINE/PubMed) covering publications from their inception to November 2024. Ten RCTs were analyzed. CrossFit® groups showed significant reductions in weight [six studies; n = 161; Hedges’ g: −0.76 (95%CI: −1.51, −0.02); p = 0.008] and body mass index (BMI) [five studies; n = 61; Hedges’ g: −0.71 (95%CI: −1.45, 0.02); p = 0.007]. However, changes in weight [six studies; n = 320; 93% men; Hedges’ g: 1.55 (95%CI: −0.66, 3.76); p = 0.071] and BMI [five studies; n = 120; Hedges’ g: 1.24 (95%CI: −0.81, 3.29); p = 0.094] were not significantly different compared to control groups. CrossFit® is a feasible option for improving body composition, metabolic health, and cardiorespiratory fitness in this population. However, its impact on blood pressure is inconclusive, and its effects on weight and BMI are comparable to traditional exercise modalities.

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CrossFit®训练对肥胖或超重成人的影响：随机对照试验的系统回顾

本系统综述和荟萃分析旨在检查和批判性分析有关CrossFit®对超重或肥胖个体影响的证据。在四个数据库（Scopus、WOS、SPORTDiscus和MEDLINE/PubMed）中进行了检索，涵盖了从成立到2024年11月的出版物。对10项随机对照试验进行分析。CrossFit®组显示体重显著减轻[六项研究；n = 161；对冲系数：- 0.76 (95%CI: - 1.51, - 0.02)；p = 0.008]和身体质量指数（BMI）[5项研究；n = 61；对冲系数：- 0.71 (95%CI: - 1.45, 0.02)；p = 0.007]。然而，体重的变化[6项研究；n = 320；男性93%;对冲系数：1.55 (95%CI: - 0.66, 3.76)；p = 0.071]和BMI[5项研究；n = 120；对冲系数：1.24 (95%CI: - 0.81, 3.29)；P = 0.094]，与对照组比较差异无统计学意义。在这一人群中，CrossFit®是改善身体成分、代谢健康和心肺健康的可行选择。然而，它对血压的影响尚不确定，它对体重和BMI的影响与传统运动方式相当。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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