The Sustained Physical Activity Role in Overcoming Fatigue in Patients with Rheumatoid Arthritis
Authors: Aleksandrov Andrey V. , Nikitin Mikhail V. , Aleksandrov Vladislav A. , Shilova Ludmila N. , Aleksandrova Ninel V. , Zborovskaya Irina A. 
Published: July 2022

Lack of knowledge about the causes of fatigue often leads to ignoring this symptom in rheumatoid arthritis (RA). The severity of fatigue in patients with RA can be significantly reduced by actively using non-pharmacological treatment strategies.
Aim. To evaluate the effectiveness of aerobic exercise (walking) to reduce fatigue in RA patients during long-term follow-up.
Material and methods. The study involved 102 patients with RA (women 100%; average age 54.38 ± 11.3 years; disease duration 9.5[5;15] years; DAS28-ESR activity 2.85[2.32;3.06] points; fatigue on the VAS scale ≥50), who completed the stage of sanatorium treatment in full (21 days) and provided data on aerobic physical activity (steps quantity per day) and fatigue scores on the British Rheumatoid Arthritis Fatigue Scale – Numerical Rating Scale (BRAF-NRS V2). RA patients were divided into two groups according to their level of physical activity: group I (n=53) with a sedentary lifestyle (less than 5–6 thousand steps/day) and group II (n=49) with a recommended (mobile) lifestyle (more than 7–8 thousand steps/day). Assessment of RA patients’ adherence to physical activity was carried out 2 months after return from the sanatorium, and the dynamics of BRAF-NRS fatigue indexes were recorded. Results and discussion. Seventy-six people (74.5%) agreed to participate in the final survey: 32 patients from a group I and 44 patients from a group II. Commitment to daily aerobic activity (more than 5,000 steps per day) was maintained by 34% of participants in the group I and 59% in the group II (p=0.033). The majority of respondents (51.3%) decreased the physical activity level and significantly reduced the time for aerobic exercise after returning from the sanatorium, citing a lack of incentives and time. 47% of the group I patients (15/32) felt able to devote more attention to physical activity, but only 25% confirmed a strong belief that they would dedicate at least 30 minutes to aerobic exercise 5 times a week over the next three months. In the group II, 48% of patients (p=0.044) reported maintaining or even increasing the corresponding physical activity level, confirming the effectiveness of individual physical activity programs formed during the sanatorium treatment and then integrated into daily life. Two months after returning from the sanatorium, group II patients showed lower fatigue scores on all BRAF-NRS scales: NRS-severity (p=0.04), NRS-effect (p=0.005), and NRS-overcoming (p=0.034). The analysis of variance revealed a decrease in the level of fatigue in the medium term (up to 2 months) regardless of the level of physical activity of the patients, but in RA patients committed to an active lifestyle and regular aerobic physical activity (group II), the positive changes were most pronounced (p<0.001).
Conclusion. The positive effect of aerobic exercise (walking) on reducing fatigue is significantly negated even in the med-term, if patients do not continue to lead an active lifestyle. After completion of the sanatorium stage of treatment (with selection of optimal dose and frequency of physical activity), RA patients should be further encouraged to do daily aerobic exercises and be supported to continue rehabilitation programs in the community in order to achieve a better effect in the long term.