Associations of social and environmental supports with sedentary behavior, light and moderate-to-vigorous physical activity in obese underserved adolescents
Associations of social and environmental supports with sedentary behavior, light and moderate-to-vigorous physical activity in obese underserved adolescents
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DOI：
10.1186/s12966-014-0092-1
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发表时间：
2014-08-15
影响因子：
8.7
通讯作者：
Wilson, Dawn K.
中科院分区：
文献类型：
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作者：
Lawman, Hannah G.;Wilson, Dawn K.
背景：支持久坐行为（SB）、轻度身体活动（LPA）以及中等到剧烈身体活动（MVPA）对健康有不同影响的证据正在不断增加。然而，很少有研究对涵盖从久坐到身体活动的整个范围的个人、社会和环境支持因素进行考察，包括自我效能、养育因素以及家庭和社区资源等关键影响因素。由于与增加中等到剧烈身体活动相关的社会和环境挑战（资源匮乏等），这在服务不足（低收入、少数族裔）的超重/肥胖青少年中可能尤为重要。本研究评估了一系列生物生态学因素，包括个人（自我效能）、父母（父母支持、监督、设定限制和养育）以及环境（对身体活动的家庭资源感知以及社区对身体活动的支持）对超重/肥胖青少年的久坐行为、轻度身体活动和中等到剧烈身体活动的预测作用。
方法：2010年，美国的超重/肥胖且主要为少数族裔的青少年及其照顾者（n = 181）完成了相关测量，包括评估身体活动自我效能、与身体活动相关的养育变量以及家庭和社区对身体活动支持的调查。结果包括通过7天加速度计对久坐行为、轻度身体活动和中等到剧烈身体活动的评估。
结果：回归分析表明，父母的社会支持和社区支持与轻度身体活动显著相关。未发现与久坐行为或中等到剧烈身体活动有显著关联。
结论：研究结果强调了考察一系列久坐行为和身体活动强度的重要性，并突出了父母和社区的社会支持对轻度身体活动的作用。这些结果具有重要意义，表明健康促进工作应针对超重/肥胖青少年增加轻度身体活动的社会和环境支持。
Background: Evidence to support differential health impacts of sedentary behavior (SB), light physical activity (LPA), and moderate-to-vigorous physical activity (MVPA) is building. However, few studies have examined individual, social, and environmental supports across the full range of sedentary and physical activities, including key influences such as self-efficacy, parenting factors, and home and neighborhood resources. This may be particularly important in underserved (low-income, minority), overweight/obese adolescents due to the social and environmental challenges (lack of resources, etc.) associated with increasing MVPA. This study evaluated a range of bioecological factors including individual (self-efficacy), parental (parental support, monitoring, limit-setting, and nurturance), and environmental (perceived home resources for PA and neighborhood support for PA) predictors of SB, LPA and MVPA in overweight/obese adolescents.Methods: Overweight/obese and predominantly minority adolescents and caregivers (n = 181) completed measures in 2010 in the US including surveys assessing self-efficacy for PA, parenting variables related to PA and home and neighborhood supports for PA. Outcomes included 7-day accelerometer estimates of SB, LPA, and MVPA.Results: Regression analyses showed parental social support and neighborhood support were significantly associated with LPA. No significant associations were found for SB or MVPA.Conclusions: Results emphasized the importance of examining a range of sedentary and PA intensities and highlighted the role of parental and neighborhood social supports for LPA. These results have important implications that suggest that health promotion efforts should target social and environmental supports for increasing LPA in youth who are overweight/obese.