Physical inactivity and sedentary behavior in individuals with stable COPD non-infected by SARS-CoV-2 during the COVID-19 pandemic

Abstract

Objective: to identify factors associated to sedentary behavior and physical inactivity in individuals with stable chronic obstructive pulmonary disease (COPD) non-infected by SARS-CoV-2 during the COVID-19 pandemic, and to identify possible favorable conditions during social isolation in individuals who performed pulmonary rehabilitation in the pre-pandemic period. Method: time/day in sedentary activities and moderate/vigorous physical activities (SA and MVPA, respectively), history of previous rehabilitation, laboural activity, symptoms, insecurity and quality of life (Medical Outcomes Study 36-item Short-Form Health Survey [SF-36]) were assessed during strict social isolation due to the COVID-19 pandemic. Individuals were classified as sedentary if presenting time/day in SA >8.5 h/day and physically inactive if presenting time/day in MVPA <150 min/week. Result: The sample consisted of 33 individuals (69±7 years; 20 male). Regarding the SF-36, non-sedentary individuals presented better functional capacity than sedentary individuals (65 [38-73] vs. 33 [20-63] points; p=0.01) whereas physically active individuals presented better physical and social function than physically inactive individuals (100 [100-100] vs. 50 [25-100] points, p=0.049; and 100 [100-100] vs. 75 [69-100] points, p=0.022, respectively). Having a professional activity and working outside were associated with non-sedentary behavior (X2=5.93; p=0.025 and X2=7.03; p=0.009, respectively). Having undergone rehabilitation previously to the pandemic was associated with less insecurity to walk outside (X2=4.95; p=0.034) and better perception of symptoms’ worsening (X2=5.46; p=0.033). Conclusion: non-sedentarism was associated with functional capacity and laboural activity; active lifestyle was associated with physical and social function; and previous rehabilitation was associated with better symptoms’ recognition and less insecurity.