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Meta-Analysis

Exercise Intervention for Late-Life Depression: A Meta-Analysis

Sivan Klil-Drori, MDa,*; Adi J. Klil-Drori, MD, MScb; Shamira Pira, MD, MScc; and Soham Rej, MD, MScc

Published: January 21, 2020

Article Abstract

Objective: To quantify the association between physical exercise intervention (PEI) and reduction in depressive symptoms in older adults.

Data Sources: MEDLINE, PsycINFO, and EMBASE were searched from inception through December 2018 with no language restrictions using keywords related to exercise, depression, elderly adults, and randomized controlled trials.

Study Selection: Randomized controlled trials comparing a sedentary control group, with no physically active intervention, to a supervised, moderate-to-vigorous PEI with participants aged ≥ 60 years and having a primary outcome of depressive symptoms were included.

Data Extraction: Data on pre- and post-intervention scores on scales measuring depressive symptoms were extracted using a standard form. Random-effects models were used to pool standardized mean differences (Hedges g) in depressive symptoms across studies.

Data Synthesis: Nine studies involving 1,308 participants were included; mean participant age was 82 years. Moderate-to-vigorous PEI was associated with a medium effect size of 0.64 (95% CI, 0.27 to 1.01; z = 3.38; P < .001) in reducing depressive symptoms. However, there was considerable heterogeneity (T2 = 0.22, Q = 36.34, P < .0001; I2 = 78.0%) in the effect of PEI across included studies. Age > 80 years, Mini-Mental State Examination (MMSE) score < 23, and no depressive symptoms at baseline contributed to heterogeneity. Fitness metrics and adherence to exercise were inconsistently reported, and 5 of 9 studies were deemed at high risk of bias.

Conclusions: A moderate reduction in depressive symptoms was seen with PEI among older adults. Nevertheless, more work is needed to support PEI for late-life depression in adults over age 80 years or with MMSE scores < 23 suggestive of cognitive decline.

Volume: 81

Quick Links: Depression (MDD)

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