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dc.contributor.authorMetsios, G.
dc.contributor.authorKoutedakis, Y.
dc.contributor.authorVeldhuijzen van Zanten, J.
dc.contributor.authorStavropoulos-Kalinoglou, A.
dc.contributor.authorVitalis, P.
dc.contributor.authorDuda, J.
dc.contributor.authorNtoumanis, Nikos
dc.contributor.authorRouse, P.
dc.contributor.authorKitas, G.
dc.identifier.citationMetsios, G. and Koutedakis, Y. and Veldhuijzen van Zanten, J. and Stavropoulos-Kalinoglou, A. and Vitalis, P. and Duda, J. and Ntoumanis, N. et al. 2015. Cardiorespiratory fitness levels and their association with cardiovascular profile in patients with rheumatoid arthritis: a cross-sectional study. Rheumatology. 54 (12): pp. 2215-2220.

Objective. The aim of this study was to investigate the association of different physical fitness levels [assessed by the maximal oxygen uptake (VO2max) test] with cardiovascular disease (CVD) risk factors in patients with RA. Methods. A total of 150 RA patients were assessed for cardiorespiratory fitness with a VO2max test and, based on this, were split in three groups using the 33rd (18.1 ml/kg/min) and 66th (22.4 ml/kg/min) centiles. Classical and novel CVD risk factors [blood pressure, body fat, insulin resistance, cholesterol, triglycerides, high-density lipoprotein (HDL), physical activity, CRP, fibrinogen and white cell count], 10-year CVD risk, disease activity (DAS28) and severity (HAQ) were assessed in all cases. Results. Mean VO2max for all RA patients was 20.9 (s.d. 5.7) ml/kg/min. The 10-year CVD risk (P = 0.003), systolic blood pressure (P = 0.039), HDL (P = 0.017), insulin resistance and body fat (both at P < 0.001), CRP (P = 0.005), white blood cell count (P = 0.015) and fibrinogen (P < 0.001) were significantly different between the VO2max tertiles favouring the group with the higher VO2max levels. In multivariate analyses of variance, VO2max was significantly associated with body fat (P < 0.001), HDL (P = 0.007), insulin resistance (P < 0.003) and 10-year CVD risk (P < 0.001), even after adjustment for DAS28, HAQ and physical activity. Conclusion. VO2max levels are alarmingly low in RA patients. Higher levels of VO2max are associated with a better cardiovascular profile in this population. Future studies need to focus on developing effective behavioural interventions to improve cardiorespiratory fitness in RA.

dc.publisherS. Karger AG
dc.titleCardiorespiratory fitness levels and their association with cardiovascular profile in patients with rheumatoid arthritis: a cross-sectional study
dc.typeJournal Article
dcterms.source.volumeIn press. Published online 25 July 2015
curtin.departmentSchool of Psychology and Speech Pathology
curtin.accessStatusOpen access

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