Physical activity is the strongest predictor of all-cause mortality in patients with COPD: a prospective cohort study.

@article{Waschki2011PhysicalAI,
  title={Physical activity is the strongest predictor of all-cause mortality in patients with COPD: a prospective cohort study.},
  author={Benjamin Waschki and Anne M Kirsten and Olaf Holz and Kai-Christian M{\"u}ller and Thorsten Meyer and Henrik Watz and Helgo Magnussen},
  journal={Chest},
  year={2011},
  volume={140 2},
  pages={
          331-342
        }
}
BACKGROUND Systemic effects of COPD are incompletely reflected by established prognostic assessments. [] Key MethodMETHODS In a prospective cohort study of 170 outpatients with stable COPD (mean FEV(1), 56% predicted), we assessed lung function by spirometry and body plethysmography; physical activity level (PAL) by a multisensory armband; exercise capacity by 6-min walk distance test; cardiovascular status by echocardiography, vascular Doppler sonography (ankle-brachial index [ABI]), and N-terminal pro-B…

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