Katapally Tarun R, Muhajarine Nazeem
Department of Community Health and Epidemiology, College of Medicine, University of Saskatchewan, Saskatoon S7N 5E5, Saskatchewan, Canada.
Johnson Shoyama Graduate School of Public Policy, University of Regina, Regina S4S 7H1, Saskatchewan, Canada.
Int J Environ Res Public Health. 2015 Sep 7;12(9):10995-1011. doi: 10.3390/ijerph120910995.
Even though physical activity and sedentary behaviour are two distinct behaviours, their interdependent relationship needs to be studied in the same environment. This study examines the influence of urban design, neighbourhood built and social environment, and household and individual factors on the interdependent relationship between objectively measured physical activity and sedentary behaviour in children in the Canadian city of Saskatoon. Saskatoon's built environment was assessed by two validated observation tools. Neighbourhood socioeconomic variables were derived from 2006 Statistics Canada Census and 2010 G5 Census projections. A questionnaire was administered to 10-14 year old children to collect individual and household data, followed by accelerometry to collect physical activity and sedentary behaviour data. Multilevel logistic regression models were developed to understand the interrelationship between physical activity and sedentary behaviour in the context of diverse environmental exposures. A complex set of factors including denser built environment, positive peer relationships and consistent parental support influenced the interrelationship between physical activity and sedentary behaviour. In developing interventions to facilitate active living, it is not only imperative to delineate pathways through which diverse environmental exposures influence physical activity and sedentary behaviour, but also to account for the interrelationship between physical activity and sedentary behaviour.
尽管身体活动和久坐行为是两种不同的行为，但它们的相互依存关系需要在同一环境中进行研究。本研究考察了城市设计、邻里建成环境和社会环境，以及家庭和个人因素对加拿大萨斯卡通市儿童客观测量的身体活动与久坐行为之间相互依存关系的影响。萨斯卡通的建成环境通过两种经过验证的观测工具进行评估。邻里社会经济变量来自加拿大统计局2006年人口普查和2010年G5人口普查预测。对10至14岁的儿童进行问卷调查，以收集个人和家庭数据，随后进行加速度计测量，以收集身体活动和久坐行为数据。建立了多层次逻辑回归模型，以了解在不同环境暴露背景下身体活动与久坐行为之间的相互关系。一系列复杂的因素，包括更密集的建成环境、积极的同伴关系和持续的父母支持，影响了身体活动与久坐行为之间的相互关系。在制定促进积极生活方式的干预措施时，不仅必须明确不同环境暴露影响身体活动和久坐行为的途径，而且还必须考虑身体活动与久坐行为之间的相互关系。
