Factors Associated with Objectively Measured Physical Activity in Patients with Seropositive Rheumatoid Arthritis

Abstract

Background: Rheumatoid arthritis (RA) is a chronic autoimmune disease, which is associated with low levels of physical activity (PA). However, the factors related to low physical activity levels have rarely been studied. Methods: In this cross-sectional study, 70 seropositive RA patients were included. Physical activity was objectively assessed with an ActiGraph GT3X+ accelerometer. In addition, body mass index, smoking status, work ability, and clinical parameters (functional disabilities, disease activity, disease duration, pain, and inflammation parameters) were measured. Results: RA patients performed a mean of 215.2 (SD: 136.6) min a week of moderate physical activity and 9.1 (SD: 26.3) min of vigorous physical activity. The total amount of moderate and vigorous physical activity (MVPA) was associated with BMI, and functional disabilities. In addition, non-smokers and patients with better work ability did more MVPA. No association could be seen with disease activity, disease duration, pain, and inflammatory markers. After mutual adjusting of all the variables, only BMI showed a significant relationship with MVPA. Conclusions: RA patients perform de facto no physical activity with vigorous intensity. Factors related to low physical activity are BMI, functional disabilities, workability and smoking status, whereas due to the study design no causal and temporal link could be made.

Nine-axis inertial measurement unit output discriminates activities of varying intensity in the dog

“…This could be important because people that suffer from chronic pain reportedly spend less time performing moderate to vigorous activity. 37,38 In this study, interdog variation was comparatively low when dogs performed agility activities, again suggesting the influence of the owner on leash-direct activities is large. We elected to use the devices described because they provided a fast sampling rate, sufficient data storage and battery life for the proposed work, access to all raw data, control of all algorithms, software that allowed for IMU calibration, easy data download and proved to be reliable when we performed concurrent validity testing.…”

Does physical activity level have an impact on long-term treatment response in temporomandibular disorders: protocol for a prospective study

“…Recruitment will proceed for 12 months and may be prolonged when the number of cases is insufficient. The final sample size is estimated to be approximately 200 participants based on a previous study on rheumatoid arthritis using statistical sample size estimation methods (α = 0.05, β = 0.10) [ 11 ].…”

Self-report and device-based physical activity measures and adherence to physical activity recommendations: a cross-sectional survey among people with inflammatory joint disease in four European countries

“…4 5 Despite these beneficial health outcomes, people with IJDs have lower PA levels than their healthier counterparts and many do not meet the required PA recommendations. [6][7][8][9][10] Self-monitoring of PA has the potential to contribute to successful behaviour change in PA interventions in different populations, including people with IJDs. [11][12][13][14] PA can be monitored in different ways, although…”

“…PA defined as ‘any bodily movement produced by skeletal muscles that result in energy expenditure’3 is safe and can improve disease activity, pain, fatigue, quality of life and sleep in people with IJDs 4 5. Despite these beneficial health outcomes, people with IJDs have lower PA levels than their healthier counterparts and many do not meet the required PA recommendations 6–10…”