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Sedentary behavior as a potential risk factor for depression among 70-year-olds
Maija Eriksson1, Sofia Nääs1, Nils Berginström2
1Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine, Umeå University, Umeå, Sweden.
Journal of Affective Disorders
|November 25, 2019
Summary
Increased sedentary time and longer sedentary bouts are linked to a higher risk of depression in 70-year-olds. This study highlights the importance of reducing sedentary behavior for older adults
Area of Science:
- Gerontology
- Epidemiology
- Behavioral Science
Background:
- Sedentary behavior is a known risk factor for depression.
- Older adults exhibit higher rates of both sedentary behavior and depression.
- Objective measures of sedentary behavior, accounting for physical activity, are needed.
Purpose of the Study:
- To investigate the association between total sedentary time and depression risk in 70-year-olds.
- To examine the relationship between the length of sedentary bouts and depression risk in this population.
Main Methods:
- Utilized data from the Healthy Ageing Initiative (n=3,633) in Umeå, Sweden.
- Objectively measured sedentary behavior using ActiGraph GT3X+ accelerometers.
- Assessed depression with the Geriatric Depression Scale and included covariates like physical activity in logistic regression.
Main Results:
- A greater percentage of daily sedentary time was associated with an increased risk of depression (OR=1.031, p=0.010).
- Longer average lengths of sedentary bouts also correlated with a higher risk of depression (OR=1.116, p=0.045).
Conclusions:
- Confirmed the link between sedentary behavior and depression in older adults.
- Identified prolonged sedentary bout duration as a significant risk factor.
- Findings support the development of targeted interventions for depression prevention in the elderly.
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