Abstract
This systematic review aimed to identify and summarize the reliability and validity of the questionnaires that have been designed for assessing self-perceived physical fitness (PF) in elderly people. Three electronic databases (MEDLINE/PubMed, SPORTDiscuss and Scopus) were searched systematically from their inception until March 2021 in order to find investigations that provided information on the reliability and/or validity of questionnaires used for identifying self-perceived PF in this population. Nine studies fulfilled these criteria, and seven questionnaires were found, five of them being specifically designed for the elderly. Concurrent validity was mostly obtained by correlating the items of the questionnaires with PF field-based tests, and poor to moderately strong associations were obtained. Test-retest reliability was informed in five questionnaires, and high values were generally observed. The SRFit questionnaire showed the best rates of concurrent validity and test-retest reliability, although these results were partially affected by the mean age of the sample. The lack of a rigorous methodological approach when designing these questionnaires detected in this review, asks for further studies using quantitative and qualitative approaches in order to create more solid and valid measurement tools.
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