Lenhart Clare M, Wiemken Andrew, Hanlon Alexandra, Perkett Mackenzie, Patterson Freda
East Stroudsburg University, East Stroudsburg, PA, USA.
University of Pennsylvania, Philadelphia, PA, USA.
BMC Public Health. 2017 Sep 18;17(1):722. doi: 10.1186/s12889-017-4756-z.
A growing proportion of adolescents have poor cardiovascular health behaviors, including low levels of physical activity and high levels of sedentary behavior, thus increasing the likelihood of poor heart health in later years. This study tested the hypothesis that low perceived neighborhood safety would be associated with low levels of physical activity and high levels of recreational sedentary behavior in high-school students.
Using cross-sectional, weighted data from the 2015 Pennsylvania (USA) State and Philadelphia city Youth Risk Behavior Survey, multivariable logistic regression modeling was used to examine the association between perceived neighborhood safety, and physical activity levels and recreational screen-based sedentary behavior time respectively, while controlling for potential confounders.
After adjustment for other significant correlates of physical activity, students with low perceived neighborhood safety had a 21% reduced odds of being physically active on 5 or more days of the last week as compared to those who felt safe (p = 0.044). Perceived safety was not related to sedentary behavior; but sports team participation emerged as a strong correlate of low screen-based sedentary behavior (OR = 0.73, p = .002).
These data add to a growing body of work demonstrating the importance of perceived safety with physical activity levels in youth. Sports team participation may be a viable target to reduce screen-based sedentary time.
越来越多的青少年有不良的心血管健康行为,包括身体活动水平低和久坐行为时间长,从而增加了晚年心脏健康不佳的可能性。本研究检验了以下假设:高中生对邻里安全的低认知与身体活动水平低和娱乐性久坐行为时间长有关。
利用2015年宾夕法尼亚州(美国)和费城青少年风险行为调查的横断面加权数据,在控制潜在混杂因素的同时,使用多变量逻辑回归模型分别检验邻里安全认知与身体活动水平以及基于屏幕的娱乐性久坐行为时间之间的关联。
在对身体活动的其他显著相关因素进行调整后,与感到安全的学生相比,邻里安全认知低的学生在上周5天或更多天进行身体活动的几率降低了21%(p = 0.044)。安全认知与久坐行为无关;但参加运动队与基于屏幕的低久坐行为密切相关(OR = 0.73,p = 0.002)。
这些数据进一步证明了安全认知对青少年身体活动水平的重要性,参与运动队可能是减少基于屏幕的久坐时间的一个可行目标。