Author(s): SOCORRO, J.L., CHALER, J., LAUNOIS, P., ALMIRALL, M., BLANCH, J., ROMAN, B., Institution: UNIVERSITAT RAMON LLULL - FUNDACIÓ BLANQUERNA, Country: SPAIN, Abstract-ID: 513

INTRODUCTION:
Fibromyalgia syndrome (FMS) significantly impacts function, affecting health status and quality of life. Its high functional impact can severely affect body function or activities and participation. Reliable and valid measures of such categories or constructs are essential to reach and accurate diagnosis and treatment. This study aimed to assess the reliability and validity of performance based-tests (PBT) in FMS patients.
METHODS:
A systematic review was conducted following the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) checklist, and four databases (PubMed, EMBASE, Cochrane Library and Web of Science) were searched. Eligible studies contained information on population (fibromyalgia), intervention (assessment), and outcomes (PBT and their psychometric properties). The International Classification of Functioning, Disability and Health (ICF) was used to organize the PBT into categories (body function or activities and participation). The risk of bias and the methodological quality of the studies was assessed according to the Consensus-based Standards for the selection of health Measurement Instruments (COSMIN)
RESULTS:
Twenty-two studies were included and seventeen PBT were evaluated. The psychometric properties assessed were reliability, construct validity and responsiveness. The 6 min walking test (6MWT) was the most often assessed performance-based test followed by the 30s chair stand test. Generally, for all PBT, methodological quality for reliability was rated as doubtful with very low to moderate evidence, and very good quality with low to high evidence was found for construct validity.
CONCLUSION:
No studies investigated criterion validity, and construct validity and responsiveness were seldom determined, highlighting the need for further research in this area.