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首页> 外文期刊>Medicine and science in sports and exercise >Physical activity predicts changes in body image during obesity treatment in women
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Physical activity predicts changes in body image during obesity treatment in women

机译：体育锻炼可预测女性肥胖治疗期间身体形象的变化

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Purpose: This study examined effects of a behavioral weight management intervention on body image (evaluative and investment dimensions) and explored the potential mediating role of structured and lifestyle physical activity (PA). Methods: The study was a longitudinal randomized controlled trial, including a 1-yr behavior change intervention and a 2-yr follow-up (225 women, 37.6 ± 7 yr, body mass index = 31.5 ± 4.1 kg?m). Statistical analyses comprised mixed-design ANOVAs with repeated measures, bivariate/partial correlations, and mediation analyses. Results: Body image improved considerably in both groups, favoring the intervention group (small to moderate effect sizes: 0.03-0.05), but began to deteriorate from 12 to 24 months, especially in the intervention group. Consequently, at 24 months, between-group differences were small and did not reach significance. Yet, levels of body dissatisfaction and dysfunctional investment remained below initial values (for both groups). Results were similar for both body image dimensions. Structured PA (at 12 and 24 months) and lifestyle PA (at 24 months) were positively associated with (r >-0.25, P < 0.05) and partially mediated body image improvements, especially in the investment component (95% confidence interval of-1.88 to-0.27 for structured PA at 12 months, 95% confidence interval of-1.94 to-0.21 for lifestyle PA at 24 months). In general, change in evaluative body image was not mediated by exercise participation, seeming more dependent on weight change. Conclusions: These findings highlight the importance of PA as a contributing factor in the improvement of body image in overweight/obese women, mainly by reducing excessive salience of appearance to one's life and self. Lifestyle PA may also be a valid option, particularly in the long term. Exercise might provide a buffer against body image deterioration overtime, favoring lasting weight loss maintenance.
机译：目的：本研究探讨了行为体重管理干预对人体形象的影响（评估和投资方面），并探讨了结构性和生活方式体育活动（PA）的潜在中介作用。方法：该研究是一项纵向随机对照试验，包括1年行为改变干预和2年随访（225名妇女，37.6±7年，体重指数= 31.5±4.1 kg？m）。统计分析包括具有重复测量，双变量/偏相关和中介分析的混合设计方差分析。结果：两组患者的身体图像均得到显着改善，偏爱干预组（中小影响量：0.03-0.05），但从12到24个月开始恶化，尤其是干预组。因此，在24个月时，组间差异很小并且没有达到显着性。然而，身体不满意和功能障碍的投资水平仍低于初始值（两组）。两个人体图像尺寸的结果相似。结构化的PA（在12和24个月时）和生活方式的PA（在24个月时）与（r> -0.25，P <0.05）和部分介导的身体形象改善呈正相关，尤其是在投资方面（95％的置信区间为-结构性PA在12个月时为1.88至-0.27，生活方式PA在24个月时为95％的置信区间为1.94至-0.21。通常，评估性身体形象的改变不是由运动参与介导的，似乎更依赖于体重的改变。结论：这些发现强调了PA作为改善超重/肥胖妇女身体形象的重要因素的重要性，主要是通过减少外观对生活和自我的过度突出。 Lifestyle PA也可能是有效的选择，尤其是从长期来看。运动可能为防止身体图像随时间推移而恶化提供缓冲，有利于持久减肥。

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