Real-world walking cadence in people with COPD

The clinical validity of real-world walking cadence in people with COPD is unsettled. Our objective was to assess the levels, variability and association with clinically relevant COPD characteristics and outcomes of real-world walking cadence. We assessed walking cadence (steps per minute during wal...

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Published in:ERJ open research 2024-03, Vol.10 (2), p.673
Main Authors: Delgado-Ortiz, Laura, Ranciati, Saverio, Arbillaga-Etxarri, Ane, Balcells, Eva, Buekers, Joren, Demeyer, Heleen, Frei, Anja, Gimeno-Santos, Elena, Hopkinson, Nicholas S, de Jong, Corina, Karlsson, Niklas, Louvaris, Zafeiris, Palmerini, Luca, Polkey, Michael I, Puhan, Milo A, Rabinovich, Roberto A, Rodríguez Chiaradia, Diego A, Rodriguez-Roisin, Robert, Toran-Montserrat, Pere, Vogiatzis, Ioannis, Watz, Henrik, Troosters, Thierry, Garcia-Aymerich, Judith
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Language:English
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Summary:The clinical validity of real-world walking cadence in people with COPD is unsettled. Our objective was to assess the levels, variability and association with clinically relevant COPD characteristics and outcomes of real-world walking cadence. We assessed walking cadence (steps per minute during walking bouts longer than 10 s) from 7 days' accelerometer data in 593 individuals with COPD from five European countries, and clinical and functional characteristics from validated questionnaires and standardised tests. Severe exacerbations during a 12-month follow-up were recorded from patient reports and medical registries. Participants were mostly male (80%) and had mean±sd age of 68±8 years, post-bronchodilator forced expiratory volume in 1 s (FEV ) of 57±19% predicted and walked 6880±3926 steps·day . Mean walking cadence was 88±9 steps·min , followed a normal distribution and was highly stable within-person (intraclass correlation coefficient 0.92, 95% CI 0.90-0.93). After adjusting for age, sex, height and number of walking bouts in fractional polynomial or linear regressions, walking cadence was positively associated with FEV 6-min walk distance, physical activity (steps·day , time in moderate-to-vigorous physical activity, vector magnitude units, walking time, intensity during locomotion), physical activity experience and health-related quality of life and negatively associated with breathlessness and depression (all p
ISSN:2312-0541
2312-0541
DOI:10.1183/23120541.00673-2023