Accelerometry in Follow up of Arthritis - a Pilot Study

This is a proof-of-concept study. The main goal is to evaluate if the accelerometry signal recorded from patients with arthritis in different disease activity stages, allows for assessment of the activity status. It will also be analysed if the accelerometry signal can be classified as registered in arthritis patients vs. registered in healthy control. Arthritis subjects will be recruited from the outpatients' clinic of the Rheumatology Department Helse Førde, Førde, Norway. Healthy control subjects will be recruited from the same administrative area as the patients and will be invited to participate via announcement on the Helse Forde Medical Trust website. Four visits to the site are planned for the arthritis group and one for the control group. The patients will be recruited in the active phase of arthritis as defined in the inclusion criteria. The study's secondary objective is to develop methods for analysing the accelerometry signal in arthritis patients.