Faculty of Health Science, Ontario Tech University, 2000 Simcoe St. N, Oshawa, ON L1G 0C5, Canada.
School of Human Kinetics and Recreation, Memorial University, 230 Elizabeth Ave., St. John's, NL A1C 5S7, Canada.
Appl Physiol Nutr Metab. 2022 Mar;47(3):278-286. doi: 10.1139/apnm-2021-0438. Epub 2021 Nov 8.
Associations of environmental variables with physical activity and sedentary time using data from the Canadian Longitudinal Study on Aging, and the Canadian Urban Environmental Health Research Consortium (Canadian Active Living Environments (Can-ALE) dataset, and Normalized Difference Vegetation Index (NDVI, greenness) dataset) were assessed. The main outcome variables were physical activity and sedentary time as measured by a modified version of the Physical Activity for Elderly Scale. The sample consisted of adults aged 45 and older ( = 36 580, mean age 62.6 ± 10.2, 51% female). Adjusted ordinal regression models consistently demonstrated that those residing in neighbourhoods in the highest Can-ALE category (most well-connected built environment) reported more physical activity and sedentary time. For example, males aged 75+ in the highest Can-ALE category had 2 times higher odds of reporting more physical activity (OR = 2.0, 95% CI = 1.1-3.5) and 1.8 times higher odds of reporting more sedentary time (OR = 1.8, 95% CI = 1.0-3.4). Neighbourhoods with higher greenness scores were also associated with higher odds of reporting more physical activity and sedentary time. It appears that an environment characterized by higher Can-ALE and higher greenness may facilitate physical activity, but it also facilitates more leisure sedentary time in older adults; research using device measured total sedentary time, and consideration of the types of sedentary activities being performed is needed. Middle-aged and older adults living in neighbourhoods with higher Can-ALE scores and more greenness report more physical activity and leisure sedentary time Greenness is important for physical activity and sedentary time in middle-aged adults.
使用来自加拿大老龄化纵向研究和加拿大城市环境健康研究联盟的数据（加拿大积极生活环境（Can-ALE）数据集和归一化差异植被指数（NDVI，绿色）数据集）评估了环境变量与身体活动和久坐时间的关联。主要的结果变量是通过修改后的老年人体育活动量表测量的身体活动和久坐时间。样本由 45 岁及以上的成年人组成（n=36580，平均年龄 62.6±10.2，51%为女性）。调整后的有序回归模型一致表明，居住在环境最适宜（连接最好的建筑环境）的社区的人报告的身体活动和久坐时间更多。例如，75 岁以上的男性在环境最适宜的 Can-ALE 类别中，报告更多身体活动的可能性高出两倍（OR=2.0，95%CI=1.1-3.5），报告更多久坐时间的可能性高出 1.8 倍（OR=1.8，95%CI=1.0-3.4）。绿地面积较高的社区也与更高的报告身体活动和久坐时间的可能性相关。似乎一个以更高的 Can-ALE 和更高的绿色度为特征的环境可能有助于身体活动，但它也促进了老年人更多的休闲久坐时间；需要使用设备测量的总久坐时间进行研究，并考虑正在进行的久坐活动类型。居住在环境适宜性得分较高、绿色度较高的社区的中老年人报告的身体活动和休闲久坐时间更多。绿色度对中老年人的身体活动和久坐时间很重要。
