Health Analysis Division, Statistics Canada, Ottawa, Ontario.
International Cooperation and Corporate Statistical Methods Division, Statistics Canada, Ottawa, Ontario.
Health Rep. 2018 Apr 18;29(4):3-13.
Moderate-to-vigorous physical activity (MVPA) and sleep are positively associated with adults' health, while the association with sedentary behaviour (SED) is negative. Light-intensity physical activity (LPA) is emerging as an independent predictor of improved cardiovascular health. The health impacts of each of these factors have been examined in isolation, but interest has increased in associations between health and movement behaviours collectively.
This analysis examines how reallocating time between movement behaviours is associated with obesity and with self-rated general and mental health. Data for 18- to 79-year-olds (n = 10,621) were collected from 2007 through 2015 as part of the Canadian Health Measures Survey. LPA, MVPA, and SED were measured using the Actical accelerometer. Body mass index (BMI) and waist circumference (WC) were directly measured. Sleep and general and mental health were self-reported.
Reallocation of 30 minutes from SED, LPA or sleep to MVPA was associated with a lower BMI and smaller WC, particularly for older and overweight/obese individuals. Time reallocation from SED to LPA was associated with lower BMI and smaller WC in respondents who were aged 50 or older or who were overweight/obese. Time reallocated from SED to any other movement behaviour was associated with decreased odds of reporting poor/fair rather than excellent general health. Time reallocation from SED to LPA or to sleep, but not to MVPA, was associated with decreased odds of reporting poor/fair rather than excellent mental health.
These findings confirm previous research indicating a strong association between MVPA and markers of obesity and health, particularly among older and overweight/obese individuals. This study also provides evidence that increasing LPA is an important health promotion message for these two subpopulations.
中等到剧烈的身体活动（MVPA）和睡眠与成年人的健康呈正相关，而与久坐行为（SED）呈负相关。低强度身体活动（LPA）正成为改善心血管健康的独立预测因素。这些因素中的每一个因素的健康影响都已经单独进行了研究，但人们对健康与运动行为之间的关联的兴趣越来越大。
本分析研究了重新分配运动行为之间的时间如何与肥胖以及自我评估的一般和心理健康相关。18 至 79 岁（n=10621）的数据是在 2007 年至 2015 年期间作为加拿大健康测量调查的一部分收集的。使用 Actical 加速度计测量 LPA、MVPA 和 SED。体重指数（BMI）和腰围（WC）是直接测量的。睡眠和一般及心理健康是自我报告的。
将 30 分钟从 SED、LPA 或睡眠重新分配到 MVPA 与较低的 BMI 和较小的 WC 相关，特别是对于年龄较大和超重/肥胖的个体。SED 向 LPA 的时间重新分配与年龄在 50 岁或以上或超重/肥胖的受访者的 BMI 和 WC 较小相关。SED 重新分配到任何其他运动行为与报告较差/一般而不是优秀的一般健康的几率降低有关。SED 重新分配到 LPA 或睡眠，而不是 MVPA，与报告较差/一般而不是优秀的心理健康的几率降低有关。
这些发现证实了先前的研究结果，表明 MVPA 与肥胖和健康标志物之间存在很强的关联，特别是在年龄较大和超重/肥胖的个体中。本研究还提供了证据，表明增加 LPA 是这两个人群的重要健康促进信息。
