Exercise prescription in psychiatry: how frequency, intensity, duration, and supervision are described in the literature

Exercise can be prescribed at a defined dose for mental disorders: at least 3 sessions per week, each lasting 30 to 60 minutes, with moderate intensity as the baseline. 🧠 A 2025 umbrella review bringing together 103 meta-analyses and 364,889 participants found a moderate overall effect of physical activity on mental disorders: an effect size of 0.534, supported by the strongest level of evidence (class I). The same review provides detailed recommendations on type, frequency, and duration; a core principle is that the program should last longer than 6 weeks.

In psychotic disorders, 40 randomized trials measured which exercise parameters influenced which outcomes. Moderate-intensity exercise outperformed low-intensity approaches in reducing total scores on the PANSS, which measures psychotic symptoms, and in reducing depressive symptoms. Higher session frequency was associated with greater improvements in psychosocial functioning scores. A mindfulness-based component was associated with improvement in positive symptoms, but also increased variability in results across studies.

The findings are not consistent across all outcomes. In a network meta-analysis combining 32 randomized trials and comparing exercise types for negative symptoms, yoga and resistance training ranked highest, although the certainty of evidence was low for most comparisons. Dropout rates were lower for aerobic exercise and higher for mind–body exercise and high-intensity groups. Evidence regarding effects on anthropometric measurements in schizophrenia is inconsistent, and the limited number of studies in bipolar disorder prevents firm recommendations. Cognitive functioning shows significant improvement, with an effect size of 0.33, rising to 0.47 when the program is delivered by a qualified professional.

📋 The five elements of the prescription: frequency, intensity, duration, type, and supervision. The general target for adults is 150 to 300 minutes of moderate-intensity physical activity per week, along with regular muscle-strengthening activity.

This content does not constitute diagnostic or treatment advice.

References: Lu ve ark. (2025), General Hospital Psychiatry · Rißmayer ve ark. (2024), Schizophrenia Bulletin · Firth ve ark. (2017), Schizophrenia Bulletin · Stubbs ve ark. (2018), European Psychiatry · Vancampfort ve ark. (2017), World Psychiatry · Stubbs ve ark. (2016), Journal of Affective Disorders · Wang ve ark. (2025), Psychiatry Research · Bull ve ark. (2020), British Journal of Sports Medicine

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