Real-world walking cadence in people with COPD.
ERJ Open Res
; 10(2)2024 Mar.
Article
en En
| MEDLINE
| ID: mdl-38444656
ABSTRACT
Introduction:
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.Methods:
We assessed walking cadence (steps per minute during walking bouts longer than 10â s) from 7â 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.Results:
Participants were mostly male (80%) and had mean±sd age of 68±8â years, post-bronchodilator forced expiratory volume in 1â s (FEV1) of 57±19% predicted and walked 6880±3926â steps·day-1. Mean walking cadence was 88±9â steps·min-1, 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 FEV1, 6-min walk distance, physical activity (steps·day-1, 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<0.05). These associations remained after further adjustment for daily steps. In negative binomial regression adjusted for multiple confounders, walking cadence related to lower number of severe exacerbations during follow-up (incidence rate ratio 0.94 per step·min-1, 95% CI 0.91-0.99, p=0.009).Conclusions:
Higher real-world walking cadence is associated with better COPD status and lower severe exacerbations risk, which makes it attractive as a future prognostic marker and clinical outcome.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Idioma:
En
Revista:
ERJ Open Res
Año:
2024
Tipo del documento:
Article
País de afiliación:
España