Health Analysis Division, Statistics Canada, Ottawa, Ontario, Canada.
J Phys Act Health. 2009 Nov;6(6):708-15. doi: 10.1123/jpah.6.6.708.
Few longitudinal studies of physical activity have included young children or used nationally representative datasets. The purpose of the current study was to explore patterns of organized physical activity for Canadian children aged 4 through 17 years.
Data from 5 cycles of the National Longitudinal Survey of Children and Youth were analyzed separately for boys (n = 4463) and girls (n = 4354) using multiple trajectory modeling.
Boys' and girls' organized physical activity was best represented by 3 trajectory groups. For boys, these groups were labeled: high stable, high decreasing, and low decreasing participation. For girls, these groups were labeled: high decreasing, moderate stable, and low decreasing participation. Risk factors (parental education, household income, urban/rural dwelling, and single/dual parent) were explored. For boys and girls, having a parent with postsecondary education and living in a higher income household were associated with a greater likelihood of weekly participation in organized physical activity. Living in an urban area was also significantly associated with a greater likelihood of weekly participation for girls.
Results suggest that Canadian children's organized physical activity is best represented by multiple patterns of participation that tend to peak in middle childhood and decline into adolescence.
很少有针对体力活动的纵向研究包括幼儿或使用全国代表性数据集。本研究的目的是探讨加拿大 4 至 17 岁儿童有组织体力活动的模式。
使用多种轨迹建模方法，分别对男孩（n=4463）和女孩（n=4354）的 5 个周期全国儿童纵向调查数据进行分析。
男孩和女孩的有组织体力活动最好由 3 个轨迹组表示。对于男孩，这些组分别标记为：高稳定、高下降和低下降参与。对于女孩，这些组分别标记为：高下降、中等稳定和低下降参与。探讨了风险因素（父母教育、家庭收入、城乡居住和单亲/双亲）。对于男孩和女孩，父母接受过高等教育和生活在高收入家庭与每周参加有组织的体力活动的可能性更大相关。居住在城市地区也与女孩每周参加有组织的体力活动的可能性显著相关。
研究结果表明，加拿大儿童的有组织体力活动最好由多种参与模式表示，这些模式往往在儿童中期达到高峰，然后在青春期下降。
