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Purpose: To examine the reliability and convergent validity of self-reported questionnaires (SRQs) to measure physical activity (PA). Methods: Systematic review with meta-analysis. The validity and reliability of SRQs to assess PA in people with mental disorders (January 20, 2020). Random-effects meta-analyses were performed pooling (1) test–retest correlations or (2) the convergent validity between the SRQs and objective measures (eg, accelerometry). Associations were provided in r values with the 95% confidence interval. Methodological quality was assessed. Results: A total of 9 unique studies (N = 1344; 40.5% females) were included. The authors found a moderate correlation test–retest reliability for PA SRQs in the assessment of vigorous PA (r = .69 [.38 to .85]; P = .001), moderate to vigorous PA (r = .63 [.25 to .84]; P = .003), moderate PA (r = .63 [.39 to .79]; P = .001), and good correlation total PA (r = .75 [.37 to .92]; P = .001). The SRQs have moderate correlations with objective measures for moderate to vigorous PA (r = .25 [.18 to .32]; P = .0001) and total PA (r = .47 [.28 to .62]; P = .005), a poor correlation for moderate PA (r = .18 [.03 to .36]; P = .047), and no correlation with vigorous PA (r = .06 [−.10 to .22]; P = .440). Conclusion: Current evidence indicates that SRQs are reliable over time to assess moderate, vigorous, and total PA levels and valid when assessing moderate PA.
de Oliveira Tavares and Galvão-Coelho are with the Laboratory of Hormone Measurement, Department of Physiology and Behavior, Federal University of Rio Grande do Norte, Natal, Brazil. Galvão-Coelho is also with the National Institute of Science and Technology in Translational Medicine, São Paulo, Brazil. Firth is with the Division of Psychology and Mental Health, University of Manchester, Manchester, United Kingdom. Rosenbaum is with the Faculty of Medicine, School of Psychiatry, UNSW Sydney, Sydney, NSW, Australia. Stubbs is with the Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, United Kingdom; and the South London and Maudsley NHS Foundation Trust, London, United Kingdom. Smith is with The Cambridge Centre for Sport and Exercise Sciences, Anglia Ruskin University, Cambridge, United Kingdom. Vancampfort is with the Department of Rehabilitation Sciences, KU Leuven, Leuven, Belgium; and the University Parish, KU Leuven, Leuven-Kortenberg, Belgium. Schuch is with the Department of Sports Methods and Techniques, Federal University of Santa Maria, Santa Maria, Brazil.