SynthesisFrontiers in psychiatry2026
Exercise interventions for depressive symptoms in adults with lung and digestive cancer: a meta-analysis of randomized controlled trials.
Synthesis in Frontiers in psychiatry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Depressive symptoms are common among patients with cancer and can substantially impair quality of life, treatment adherence and overall well-being. Although exercise has been increasingly recognised as a promising non-pharmacological strategy for alleviating depression in oncology settings, existing evidence has focused predominantly on breast cancer, with limited attention to lung and digestive cancers. This meta-analysis aimed to evaluate the effects of exercise interventions on depressive symptoms in adults with lung and digestive cancer. Methods: A systematic search was conducted in PubMed, Web of Science, Embase, Cochrane Library and Scopus from database inception to March 2026. Randomized controlled trials investigating the effects of exercise interventions on depressive symptoms in adults with lung or digestive cancer were included. The primary outcome was depressive symptoms measured using validated instruments. Subgroup analyses were performed according to intervention format, exercise type and training frequency. Risk of bias was assessed using the Cochrane Risk of Bias tool version 1. Results: Eight randomized controlled trials were included in the meta-analysis. Baseline analysis showed no significant difference in depressive symptoms between the exercise and control groups before intervention. Post-intervention meta-analysis demonstrated that exercise significantly reduced depressive symptoms compared with control conditions (SMD = -0.45, P = 0.02), Although substantial heterogeneity was observed. Individually delivered programmes, walking-based exercise and moderate-frequency training (3-5 times per week) showed numerically larger effect estimates. Conclusions: Exercise interventions may reduce depressive symptoms in adults with lung and digestive cancer and represent a promising adjunctive strategy for psychological care in these populations. Although subgroup differences were not statistically significant, certain intervention characteristics may be associated with greater benefit. Further large-scale, high-quality randomized trials are needed to confirm these findings and to establish the optimal exercise prescription for reducing depressive symptoms in adults with lung and digestive cancer. Systematic review registration: https://www.crd.york.ac.uk/prospero/, identifier CRD420261336578.
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