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Association of daily physical activity volume and intensity with COPD severity

Jehn, M. and Schmidt-Trucksass A., and Meyer, A. and Schindler, C. and Tamm, M. and Stolz, D.. (2011) Association of daily physical activity volume and intensity with COPD severity. Respiratory medicine, Vol. 105, H. 12. S. 1846-1852.

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Official URL: http://edoc.unibas.ch/dok/A6002123

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Abstract

PURPOSE: The purpose of this study was to assess whether daily walking activity is indicative of disease severity in patients with COPD. METHODS: Daily activity was measured by accelerometry in 107 COPD: GOLD II (N=28), GOLD III (N=51), and GOLD IV (N=25). Steps per day and times (min/day) spent passively, actively, walking (WLK, 0-5km/h), and fast walking (FWLK, <5km/h) were analyzed. Total walking time (TWT) was computed. RESULTS: Times spent WLK (P=0.031), FWLK (P=0.001), TWT (P=0.021), and steps per day (P=0.013) differed significantly between GOLD stages. There was a significant negative correlation between TWK and GOLD stage (R=-0.35; P/=6 (P=0.029 and P=0.040, respectively). The corresponding AUC-value with 95% CI for TWT was 0.80 (95% CI: 0.70 to 0.90) and 0.87 (95% CI: 0.81 to 0.94) for FWLK. The corresponding optimal cut-off value for TWT was 33.3min/day (sensitivity: 86%; specificity 70%) and FWLK was 0.10min/day (sensitivity: 93%; specificity 76%). CONCLUSION: Daily walking activity, in particular walking intensity, is significant predictor of disease severity in patients with COPD. Objective measures of habitual activity might provide additive value in assessing the likelihood of poor prognosis in this patient cohort
Faculties and Departments:03 Faculty of Medicine > Bereich Medizinische Fächer (Klinik) > Pneumologie > Pneumologie (Stolz)
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Medizinische Fächer (Klinik) > Pneumologie > Pneumologie (Stolz)
03 Faculty of Medicine > Departement Sport, Bewegung und Gesundheit > Bereich Sport- und Bewegungsmedizin > Sportmedizin (Schmidt-Trucksäss)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Epidemiology and Public Health (EPH) > Health Systems Research and Dynamic Modelling > Dynamical Modelling (Smith)
03 Faculty of Medicine > Departement Public Health > Sozial- und Präventivmedizin
UniBasel Contributors:Schindler, Christian and Stolz, Daiana and Schmidt-Trucksäss, Arno
Item Type:Article, refereed
Bibsysno:Link to catalogue
Publisher:Saunders
ISSN:0954-6111
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:08 Nov 2012 16:23
Deposited On:08 Nov 2012 16:16

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