Sedentary time in people with obstructive airway diseases

Cordova-Rivera, Laura and Gardiner, Paul A. and Gibson, Peter G. and Winkler, Elisabeth A. H. and Urroz, Paola D. and McDonald, Vanessa M. (2021) Sedentary time in people with obstructive airway diseases. Respiratory Medicine, 181:106367. pp. 1-10. ISSN 0954-6111


Sedentary time (ST) and light-intensity physical activity (LIPA) are movement behaviours associated with important health outcomes, but are not widely explored in respiratory diseases. We aimed to describe their volume and/or accumulation patterns in moderate-severe COPD, bronchiectasis and severe asthma using the accurate postural-based accelerometer activPAL, contrasting these values with a non-respiratory population. We also sought to test the cross-sectional associations of these behaviours with disease characteristics by diagnostic group, and as a combined label-free disease group.

Adults with COPD (n = 64), bronchiectasis (n = 61), severe asthma (n = 27), and controls (n = 61) underwent cross-sectional measurements of volume and/or accumulation patterns of ST and LIPA. The prevalence and characteristics, and associations with exercise capacity, health-status, airflow-limitation, dyspnoea, systemic inflammation and exacerbations were analysed.

ST volumes in COPD were higher than that of bronchiectasis and severe asthma. Values in bronchiectasis and severe asthma were similar to each other and controls (≈8.9 h/day). Their accumulation patterns were also significantly better than in COPD, but similar if not worse compared to controls. LIPA volumes in bronchiectasis and severe asthma were also higher than those of COPD (p < 0.05) and controls. In bronchiectasis and COPD, lower levels/better patterns of ST accumulation, as well as higher LIPA volume were associated with better clinical characteristics. These associations may be mediated by airflow limitation.

The discordance between engagement in ST volume versus ST patterns highlights the importance of accounting for both these different yet complementary metrics. ST and LIPA are low-intensity activities associated with important clinical characteristics in people with chronic respiratory diseases.

Trial registration
Not applicable.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 06 Oct 2021 00:53
Last Modified: 03 Nov 2021 02:12
Uncontrolled Keywords: adult; aged; Article; asthma; bronchiectasis; chronic obstructive lung disease; clinical outcome; combination drug therapy; controlled study; corticosteroid therapy; data analysis software; diagnosis related group; disease exacerbation; dyspnea; female; health status; human; inflammation; low intensity exercise; major clinical study; male; obstructive airway disease; physical activity; prevalence; priority journal; respiratory airflow; sedentary time; spirometry; volumetry
Fields of Research (2008): 11 Medical and Health Sciences > 1102 Cardiovascular Medicine and Haematology > 110203 Respiratory Diseases
11 Medical and Health Sciences > 1117 Public Health and Health Services > 111712 Health Promotion
11 Medical and Health Sciences > 1117 Public Health and Health Services > 111706 Epidemiology
Fields of Research (2020): 32 BIOMEDICAL AND CLINICAL SCIENCES > 3201 Cardiovascular medicine and haematology > 320103 Respiratory diseases
42 HEALTH SCIENCES > 4206 Public health > 420603 Health promotion
42 HEALTH SCIENCES > 4202 Epidemiology > 420201 Behavioural epidemiology
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