01
What the evidence says
The review synthesized 218 randomized studies with 14,170 participants and compared exercise forms using direct and indirect evidence. Walking or jogging, yoga, strength training, and mixed aerobic exercise showed moderate reductions in depression relative to active controls, though confidence and risk of bias varied. Larger prescribed intensity was associated with larger effects, while participant characteristics and study design differed substantially.
Sources for this section: [1]
02
How to use the finding
Exercise can be offered alongside psychotherapy, medicine, and social support or, for some people, as one chosen treatment within a monitored plan. Preference, safety, access, disability, fatigue, cost, supervision, and likelihood of continuing matter more than ranking a theoretically best modality. The therapeutic program in a trial often includes contact, structure, and expectation as well as movement.
Sources for this section: [1]
03
Limits and open questions
Many exercise trials are small, cannot blind participants, lose participants over time, and measure symptoms rather than remission, safety, or durable function. Network comparisons partly rely on assumptions that different studies are comparable. Severe depression, bipolar disorder, psychosis, and acute suicide risk require appropriate clinical care; these averages do not establish exercise as sufficient treatment in every presentation.
Sources for this section: [1]
Sources
- Effect of exercise for depression: systematic review and network meta-analysis of randomised controlled trialsBMJ · 2024DOI 10.1136/bmj-2023-075847