Vanderlinden Julie, Biddle Gregory J H, Boen Filip, van Uffelen Jannique G Z
Physical Activity, Sports & Health Research Group, Department of Movement Sciences, KU Leuven, 3000, Leuven, Belgium.
Department of Health Care, Odisee University of Applied Sciences, 1000, Brussels, Belgium.
J Act Sedentary Sleep Behav. 2023 May 1;2(1):9. doi: 10.1186/s44167-023-00019-3.
Well-being is a key aspect for healthy ageing and there is an established association between physical activity and well-being in ageing adults. Despite the recent interest in physical activity as part of a 24-h continuum also including sedentary behaviour and sleep, there is a lack of studies examining the link between these 24-h behaviours and well-being in older adults. Therefore, the aim of this study was twofold: (1) to describe 24-h behaviours and their associations with mental well-being in community dwelling adults aged 55+ years; and (2) to examine the theoretical changes in mental well-being if time were reallocated from one behaviour to another.
This was a cross-sectional study (n = 410). Daily time spent in sedentary behaviour, light and moderate-vigorous physical activity, and sleep was assessed using wrist-worn accelerometers during 6 days. Mental well-being was assessed using the 14-item Warwick-Edinburgh Mental Well-being Scale (WEMWBS). The association of 24-h behaviours and well-being was examined using crude and adjusted linear regression models with compositional data analysis procedures (aim 1). Associations between reallocations of five-minute intervals from five to 60 min between these behaviours and well-being were modelled using compositional isotemporal substitutions (aim 2).
Mean age (SD) was 71.3 (6.3) years and 71% were female. In 24-h, participants spent 5.66 h asleep, 13.88 h sedentary, 2.58 h in light intensity and 1,89 h in moderate-vigorous intensity physical activity. There were no statistically significant associations between 24-h behaviours and mental well-being in fully adjusted models (aim 1). Reallocations up to 30 min were not significantly associated with changes in well-being (aim 2). There were some statistically significant theoretical changes of up to 2 points on the WEMWBS with substitutions larger than 30 min.
24-h behaviours and time reallocations between behaviours were not associated with better or worse well-being in community dwelling adults aged 55+ years. Considering well-being as a key aspect for healthy ageing, future public health research should continue to examine physical activity (both light and moderate-to-vigorous), sedentary behaviour, as well as sleep as a part of the 24-h continuum and its associations with mental health outcomes in older adults. Trial registration This trial was registered at ClinicalTrials.gov on 3th July, 2018 (Trial registration NCT03576209).
幸福感是健康老龄化的关键因素，老年人的身体活动与幸福感之间存在既定关联。尽管最近人们对身体活动作为24小时连续体的一部分（还包括久坐行为和睡眠）产生了兴趣，但缺乏研究探讨这些24小时行为与老年人幸福感之间的联系。因此，本研究的目的有两个：（1）描述55岁及以上社区居住成年人的24小时行为及其与心理健康的关联；（2）研究如果时间从一种行为重新分配到另一种行为，心理健康的理论变化情况。
这是一项横断面研究（n = 410）。使用腕部佩戴的加速度计在6天内评估每天花在久坐行为、轻度和中度至剧烈身体活动以及睡眠上的时间。使用14项沃里克 - 爱丁堡心理健康量表（WEMWBS）评估心理健康。使用带有成分数据分析程序的粗线性回归模型和调整线性回归模型来研究24小时行为与幸福感的关联（目标1）。使用成分等时替代法对这些行为之间5分钟至60分钟间隔的重新分配与幸福感之间的关联进行建模（目标2）。
平均年龄（标准差）为71.3（6.3）岁，71%为女性。在24小时内，参与者睡眠5.66小时，久坐13.88小时，轻度活动2.58小时，中度至剧烈活动1.89小时。在完全调整的模型中，24小时行为与心理健康之间没有统计学上显著的关联（目标1）。重新分配长达30分钟与幸福感变化没有显著关联（目标2）。当替代时间超过30分钟时，WEMWBS上有一些高达2分的统计学上显著的理论变化。
55岁及以上社区居住成年人的24小时行为以及行为之间的时间重新分配与幸福感的好坏无关。鉴于幸福感是健康老龄化的关键因素，未来的公共卫生研究应继续将身体活动（包括轻度和中度至剧烈活动）、久坐行为以及睡眠作为24小时连续体的一部分进行研究，并探讨其与老年人心理健康结果的关联。试验注册 本试验于2018年7月3日在ClinicalTrials.gov上注册（试验注册号NCT03576209）。
