Observational studyBMJ open respiratory research2026
Influence of basal physical activity and air quality on a walking programme in patients with COPD.
Observational study in BMJ open respiratory research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
6 authors.
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Abstract
BACKGROUND AND
objectivePromoting physical activity is essential in chronic obstructive pulmonary disease (COPD) management, but the role of air quality in urban walking programmes remains unclear. This study assessed baseline factors and the impact of air quality on the success of a COPD walking programme.
methodsIn this prospective observational study, 72 patients with COPD and peripheral oxygen saturation (SpO
results42 patients (58%) achieved programme goals. The mean COPD Assessment Test score and forced expiratory volume in 1 second (FEV₁) were 11.5 and 54% predicted, respectively. Variables such as age, sex, Body Mass Index, comorbidities and exacerbation history showed no significant associations. Air quality (mean AQI: 71±10.7) did not influence outcomes (OR 1.018; 95% CI 0.949 to 1.092; p=0.622). Responders had higher baseline YPAS scores (OR 33.197; 95% CI 6.197 to 185.636; p<0.001) and greater FEV
conclusionsAQI did not affect programme outcomes. Baseline sedentary status and FEV
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