# name
Physical activity patterns and clusters in 1001 patients with
                COPD

# metadata.dc.description.abstract[].value
We described physical activity measures and hourly patterns in
                patients with chronic obstructive pulmonary disease (COPD) after
                stratification for generic and COPD-specific characteristics
                and, based on multiple physical activity measures, we identified
                clusters of patients. In total, 1001 patients with COPD (65%
                men; age, 67 years; forced expiratory volume in the first second
                [FEV1], 49% predicted) were studied cross-sectionally.
                Demographics, anthropometrics, lung function and clinical data
                were assessed. Daily physical activity measures and hourly
                patterns were analysed based on data from a multisensor armband.
                Principal component analysis (PCA) and cluster analysis were
                applied to physical activity measures to identify clusters. Age,
                body mass index (BMI), dyspnoea grade and ADO index (including
                age, dyspnoea and airflow obstruction) were associated with
                physical activity measures and hourly patterns. Five clusters
                were identified based on three PCA components, which accounted
                for 60% of variance of the data. Importantly, couch potatoes
                (i.e. the most inactive cluster) were characterised by higher
                BMI, lower FEV1, worse dyspnoea and higher ADO index compared to
                other clusters ( p < 0.05 for all). Daily physical activity
                measures and hourly patterns are heterogeneous in COPD. Clusters
                of patients were identified solely based on physical activity
                data. These findings may be useful to develop interventions
                aiming to promote physical activity in COPD.

# metadata.dc.relation.ispartof[].value
Chronic Respiratory Disease, 2017, vol. 14, num. 3, p. 256-269

# metadata.dc.source[].value
Articles publicats en revistes (ISGlobal)

# metadata.dc.title[].value
Physical activity patterns and clusters in 1001 patients with
                COPD