Lungu Ana Andreea, Ghenadenik Adrian E, Van Hulst Andraea, Mathieu Marie-Eve, Henderson Melanie, Kestens Yan, Barnett Tracie A
Department of Family Medicine, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada.
Ingram School of Nursing, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada.
J Act Sedentary Sleep Behav. 2025 Jun 5;4(1):8. doi: 10.1186/s44167-025-00074-y.
Physical inactivity (PI), sedentary behaviour time (SB) and screen time (ST) are related but distinct behaviors for which separate research and environmental intervention frameworks may be warranted. We examined associations between neighbourhood features and PI/SB/ST among boys and girls at risk of obesity at two timepoints, i.e., childhood (8-10 years old) and pre-adolescence (10-12 years old).
Data were from the QUALITY cohort, an ongoing study of the natural history of obesity in 630 Quebec families. Based on accelerometry, excess PI was defined as accumulating < 60 min/day of moderate to vigorous physical activity and excess SB as recording < 100 counts per minute for > 50% of wear time, and excess ST was based on self report and defined as reporting > 2 h/day of recreational ST. Neighbourhood features including presence of physical activity installations, green space, walkability, traffic indicators, physical disorder and foodscape indicators were measured using direct observation and geographic information systems. Neighbourhood features were measured when children were 8-10 years of age. Separate logistic regression models were estimated at each time point. Models controlled for child's age, parental BMI, parental education, and area-level material deprivation.
The odds of excess ST were lower in neighbourhoods with a higher number of parks, across all age and sex groups [ORs ranging from 0.70 (95% CI: 0.54-0.91) to 0.81(95% CI: 0.65-1.01)]. Among boys, the odds of excess SB were lower in neighbourhoods with more physical activity structures (OR: 0.44; 95% CI: 0.20-0.99); among girls, the odds of excess SB were lower in neighbourhoods with more sidewalks (OR: 0.67, 95% CI 0.47-0.95) and those that were exclusively residential (OR: 0.13, 95% CI: 0.04-0.45). Few neighbourhood features were associated with PI.
Our findings suggest that PI, SB and ST have both shared and distinct environmental determinants among children with parental obesity. While different patterns are likely to emerge across diverse contexts and populations, it remains relevant to consider that transforming specific features of the built environment may be more effective for some outcomes than others, and may not benefit all groups equally.
缺乏身体活动（PI）、久坐行为时间（SB）和屏幕时间（ST）是相关但不同的行为，可能需要单独的研究和环境干预框架。我们在两个时间点，即童年期（8 - 10岁）和青春期前（10 - 12岁），研究了肥胖风险男孩和女孩的邻里特征与PI/SB/ST之间的关联。
数据来自QUALITY队列，这是一项对630个魁北克家庭肥胖自然史的正在进行的研究。基于加速度计，过量PI被定义为每天中度至剧烈身体活动累积时间<60分钟，过量SB被定义为在超过50%的佩戴时间内每分钟记录<100次计数，过量ST基于自我报告，定义为报告每天娱乐性ST>2小时。邻里特征包括体育活动设施的存在、绿地、可步行性、交通指标、物理混乱和食物景观指标，通过直接观察和地理信息系统进行测量。邻里特征在儿童8 - 10岁时进行测量。在每个时间点估计单独的逻辑回归模型。模型控制了儿童年龄、父母BMI、父母教育程度和地区层面的物质匮乏情况。
在所有年龄和性别组中，公园数量较多的社区中过量ST的几率较低[优势比（OR）范围从0.70（95%置信区间：0.54 - 0.91）到0.81（95%置信区间：0.65 - 1.01）]。在男孩中，体育活动结构较多的社区中过量SB的几率较低（OR：0.44；95%置信区间：0.20 - 0.99）；在女孩中，人行道较多的社区（OR：0.67，95%置信区间0.47 - 0.95）和纯住宅区（OR：0.13，95%置信区间：0.04 - 0.45）中过量SB的几率较低。很少有邻里特征与PI相关。
我们的研究结果表明，在父母肥胖的儿童中，PI、SB和ST具有共同和不同的环境决定因素。虽然在不同背景和人群中可能会出现不同模式，但考虑到改变建筑环境的特定特征对某些结果可能比其他结果更有效，且可能不会平等地惠及所有群体，这一点仍然很重要。
