We systematically examined the reliability and validity of physical activity questionnaires, updating a review that was published in 2018. For the first time, content validation studies were systematically assessed based on the COSMIN guidelines, though quality of evidence remains low. No questionnaire achieved COSMIN benchmarks for both sufficient test-retest reliability and construct validity. We provided many recommendations for improving questionnaires.
Read it here: Rostami Haji Abadi et al. (2025)
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