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Aim: To collect and summarize the available scientific evidence that evaluates the effects of physical exercise interventions on axial spondyloarthritis (axSpA)., Methods: A systematic review was conducted in accordance to the guidance of Preferred Reporting Items for Systematic review and Meta-Analysis (PRISMA) to collect randomized controlled trials on the PubMed, Embase and Web of Science Core Collection databases. The search strategy included terms regarding physical exercise interventions targeted to axSpA participants and all of its variants in multiple combinations adapted to each one of the databases regarding its own special requirements. Several outcomes were defined: Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), Bath ankylosing spondylitis functional index (BASFI), Bath Ankylosing Spondylitis Metrology Index (BASMI), ASDAS (Ankylosing Spondylitis Disease Activity Score), C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), the 36-item short form health survey (SF-36) and the Ankylosing Spondylitis Quality of Life questionnaire (ASQoL). Two independent researchers screened the titles and abstracts followed by full-text analysis when suitable, using EndnoteTM online. Selected articles, according to exclusion/inclusion criteria defined, were submitted to data extraction and bias assessment was performed for each study's outcomes using the Cochrane risk-of-bias tool for randomized trials., Results: A total of 2063 articles were identified through the electronic databases search. After removal of duplicates, 1435 were eligible for screening, of which 45 articles went through full text evaluation. Only 24 articles met the inclusion/exclusion criteria. Physical exercise contributes for a statistically significant improvement of BASDAI in 13 studies, BASFI in 10, BASMI in 6, ASDAS in 3, CRP in 2, ESR in 1, SF-36 in 2 and ASQoL in 3.No major adverse effects were reported and an overall benefit was noted with the implementation of physical exercise as a treatment modality for axSpA., Conclusion: Physical exercise seems to be an effective non-pharmacological therapy for axSpA, with positive effects in disease activity, physical function, and quality of life.

Aim: To estimate the disease specific prevalence of undiagnosed rheumatic and musculoskeletal diseases (RMDs) in Portugal and determine if people with undiagnosed RMDs have worse quality of life, physical function and higher health resources consumption, than people without RMDs., Methods: A subgroup analysis of EpiReumaPt was made that included all participants≥18 years evaluated by a rheumatologist. Participants were stratified into three groups: undiagnosed RMDs; previously diagnosed RMDs; non-RMDs. A descriptive analysis of the three groups was performed. To estimate the prevalence of undiagnosed RMDs, weighted proportion were computed considering the sample design. The three groups were compared (Undiagnosed RMDs vs non-RMDs; Previously diagnosed RMDs vs non-RMDs) for health related quality of life (HRQoL) (EQ5D), physical function (HAQ), mental health (HADS) and health resources consumption. The effect of being undiagnosed for these outcomes was assessed in multivariable models adjusted for age, gender, geographical region and years of education (reference: non-RMD)., Results: A total of 3877 participants were included. The prevalence of undiagnosed RMDs was 29%. Compared to participants without RMDs, undiagnosed participants had lower HRQoL (EQ-5D: β (95% CI)=-0.07 (-0.103,-0.043)) and physical function (HAQ: β (95% CI)=0.10 (0.05, 0.15)), more anxiety (OR (95% CI)=2.3 (1.4, 3.7)) and depression symptoms (OR (95% CI)=1.4 (0.8, 2.4)). Undiagnosed RMDs participants were more likely to visit an orthopedist (OR (95% CI)=2.0 (1.1, 3.5)) and had a higher number of orthopedic appointments (IRR (95% CI)=2.5 (1.3, 4.9)) than participants without RMDs., Conclusion: Patients with undiagnosed RMDs are frequent in Portugal, have worse HRQoL, physical function and mental health than people without RMDs. Undiagnosed patients are nonetheless consumers of health resources and tend to seek help from specialties other than rheumatology. Increasing the awareness of RMDs might promote their early identification and treatment leading to both personal and societal benefits.