Huang Wendy Y, Wong Stephen H, Salmon Jo
Department of Sports Science and Physical Education, The Chinese University of Hong Kong, Hong Kong, PR China.
J Sci Med Sport. 2013 Nov;16(6):509-14. doi: 10.1016/j.jsams.2012.12.011. Epub 2013 Jan 29.
To investigate individual, behavioral, social and environmental correlates of physical activity (PA) and screen-based behaviors ([SBBs] TV viewing, electronic games playing and Internet use) in Chinese boys and girls in Hong Kong.
Cross-sectional study.
PA and SBBs were self-reported among 303 children. Individual, behavioral, social and environmental correlates were reported by children and parents. Children's height and weight were measured and population density of residence districts was divided into tertiles. Hierarchical multivariable regression analyses were conducted to determine the contributions of correlates in explaining PA and SBBs.
Participation in school sport teams and self-efficacy was positively associated with PA in boys. Girls who reported participation in school sport teams, who perceived more peer support, had a more supportive home PA environment, and spent more time doing homework were more physically active. Family support for PA was negatively and homework was positively, associated with boys' SBBs. Body mass index and parent role modeling of TV was positively associated with TV viewing, whilst more sedentary opportunities in the home were associated with higher Internet use/e-games playing among girls.
Sex differences existed among the individual, behavioral, social and home environmental factors related to PA and SBBs. Interventions should consider multiple and sex-specific factors for promoting an active lifestyle and reducing sedentary time among Chinese children.
调查中国香港地区男童和女童身体活动（PA）以及基于屏幕的行为（[SBBs]看电视、玩电子游戏和使用互联网）的个体、行为、社会和环境相关因素。
横断面研究。
303名儿童自行报告PA和SBBs情况。儿童和家长报告个体、行为、社会和环境相关因素。测量儿童的身高和体重，并将居住地区的人口密度分为三分位数。进行分层多变量回归分析，以确定相关因素在解释PA和SBBs方面的作用。
参加学校运动队和自我效能感与男童的PA呈正相关。报告参加学校运动队、感知到更多同伴支持、拥有更支持性的家庭PA环境且做作业时间更长的女童身体活动更积极。家庭对PA的支持与男童的SBBs呈负相关，而做作业与男童的SBBs呈正相关。体重指数和家长看电视的行为榜样与看电视呈正相关，而家中更多的久坐机会与女童更高的互联网使用/电子游戏玩闹率相关。
在与PA和SBBs相关的个体、行为、社会和家庭环境因素中存在性别差异。干预措施应考虑多种因素以及性别特异性因素，以促进中国儿童积极的生活方式并减少久坐时间。
