Physical inactivity is important to address, and an objective way of measuring inactivity is by accelerometry.The objective of this\nstudy was to determine the reliability and construct validity of the SENS motion system to record physical activity and inactivity in\npatients with knee osteoarthritis. Participants with an age > 40 years and an average weekly pain above 0 on a numeric rating scale\n(0 = no pain, 10 = worst pain) were included. Participants had a total of two study visits and at each visit participants completed a\nstandardized activity. Data from 24 participants were analysed. A mean agreement of 99% (SD 3%) for sedentary behaviour and a\nmean agreement of 97% (SD9%) for active behaviourwere found.Theagreement for ââ?¬Å?walkingââ?¬Â was 28%(SD18%).Mean agreement\nbetween recordings on the two visits was 96% (SD 8%) for sedentary behaviour and 99% (SD 1%) for active behaviour.The SENS\nmotion activity measurement system can be regarded as a reliable and valid device for measuring sedentary behaviour in patients\nwith knee OA, whereas detection of walking is not reliable and would require further work
Loading....