Isotemporal substitution analysis of the impact of sedentary behavior and physical activity on depression in Taiwanese older adults: A prospective study

IF 2.3 3区医学 Q2 PSYCHIATRY

Mental Health and Physical Activity Pub Date : 2024-07-24 DOI:10.1016/j.mhpa.2024.100620

Jiaren Chen , Ting‐Fu Lai , Chien-Yu Lin , Li-Jung Lin , Jong-Hwan Park , Yung Liao

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Abstract

Background and aims

Research has shown that reducing sedentary behavior (SB) and increasing physical activity (PA) can lower depression risk in older adults. However, few studies have investigated the effect of reallocating sedentary time to PA on the incidence of depression in older populations. We examined the longitudinal associations of reallocating SB and PA to each other with the incidence of depression in older adults.

Methods

Community-dwelling adults aged 65 years and older, capable of independent walking, were recruited through collaboration with outpatient services of a hospital at baseline (2020) and followed up after one year (2021). Baseline light physical activity (LPA) and moderate-to-vigorous physical activity (MVPA) intensities and SB were assessed using a triaxial accelerometer (GT3X+, ActiGraph). The incidence of depression after one year was identified using the 15-item Geriatric Depression Scale. Isotemporal models were used to estimate associations.

Results

A total of 167 participants (52.1% women) were included. Adjusted isotemporal models indicated that reallocating time in SB (OR = 0.27, 95% CI = 0.06, 1.21) and LPA (OR = 0.16, 95% CI = 0.03, 0.98) to MVPA was (marginally) associated with a lower risk of depression; in contrast, a higher risk of depression was found when reallocating MVPA time to SB (OR = 5.21, 95% CI = 0.95, 28.53) and LPA (OR = 6.11, 95% CI = 1.02, 36.63). No statistical evidence of the reallocation from SB to LPA on depressive symptoms.

Conclusion

The findings suggest that public health initiatives promoting higher levels of PA with reduced sitting times may decrease the risk of geriatric depression. Clinicians and public health practitioners should consider the thresholds of PA intensity when developing strategies to mitigate depression risk among the older population. These findings require further corroboration by monitoring behavioral changes and clarifying context-specific behaviors in the associations.

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台湾老年人久坐行为和体育锻炼对抑郁症影响的时空替代分析：前瞻性研究

研究表明，减少久坐行为（SB）和增加体力活动（PA）可以降低老年人患抑郁症的风险。然而，很少有研究调查了将久坐时间重新分配给体力活动对老年人抑郁症发病率的影响。我们研究了将久坐时间和活动时间相互重新分配与老年人抑郁症发病率之间的纵向联系。通过与一家医院的门诊部合作，我们在基线年（2020 年）招募了 65 岁及以上、能够独立行走的社区居住成年人，并在一年后（2021 年）进行了随访。使用三轴加速度计（GT3X+，ActiGraph）对基线轻体力活动（LPA）和中到高强度体力活动（MVPA）强度和SB进行评估。使用 15 项老年抑郁量表确定一年后的抑郁发生率。采用等时模型估算相关性。共纳入 167 名参与者（52.1% 为女性）。98）与抑郁风险较低有关；相反，将 MVPA 时间重新分配到 SB（OR = 5.21，95% CI = 0.95，28.53）和 LPA（OR = 6.11，95% CI = 1.02，36.63）时，抑郁风险较高。在抑郁症状方面，没有统计证据表明从可持续发展目标到低生活质量目标的重新分配。研究结果表明，促进更高水平的体育锻炼并减少久坐时间的公共卫生措施可降低老年抑郁症的发病风险。临床医生和公共卫生从业人员在制定减轻老年人抑郁风险的策略时，应考虑活动量强度的阈值。这些研究结果还需要通过监测行为变化和明确关联中的特定环境行为来进一步证实。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Mental Health and Physical Activity PSYCHIATRY-

CiteScore

6.70

自引率

6.40%

发文量

审稿时长

32 days

期刊介绍： The aims of Mental Health and Physical Activity will be: (1) to foster the inter-disciplinary development and understanding of the mental health and physical activity field; (2) to develop research designs and methods to advance our understanding; (3) to promote the publication of high quality research on the effects of physical activity (interventions and a single session) on a wide range of dimensions of mental health and psychological well-being (eg, depression, anxiety and stress responses, mood, cognitive functioning and neurological disorders, such as dementia, self-esteem and related constructs, psychological aspects of quality of life among people with physical and mental illness, sleep, addictive disorders, eating disorders), from both efficacy and effectiveness trials;