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International Journal of Telemedicine and Applications
Volume 2012, Article ID 438736, 8 pages
Research Article

Telemonitoring of Daily Activity and Symptom Behavior in Patients with COPD

1Telemedicine Group, Roessingh Research and Development, P.O. Box 310, 7500 AH Enschede, The Netherlands
2Telemedicine Group, University of Twente, 7500 AE Enschede, The Netherlands
3Department of Pulmonary Medicine, Medisch Spectrum Twente, 7500 KA Enschede, The Netherlands
4Department of Research Methodology, Measurement and Data Analysis, University of Twente, 7500 AE Enschede, The Netherlands
5Medical School Twente, Medisch Spectrum Twente, 7500 KA Enschede, The Netherlands

Received 4 July 2012; Revised 10 October 2012; Accepted 23 October 2012

Academic Editor: Y. L. Hsu

Copyright © 2012 Monique Tabak et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objectives. This study investigated the activity behavior of patients with COPD in detail compared to asymptomatic controls, and the relationship between subjective and objective activities (awareness), and readiness to change activity behavior. Methods. Thirty-nine patients with COPD (66.0 years; FEV1% predicted: 44.9%) and 21 healthy controls (57.0 years) participated. Objective daily activity was assessed by accelerometry and expressed as amount of activity in counts per minute (cpm). Patients' baseline subjective activity and stage of change were assessed prior to measurements. Results. Mean daily activity in COPD patients was significantly lower compared to the healthy controls (  cpm versus  cpm, ). COPD patients showed a temporary decrease in objective activities in the early afternoon. Objective and subjective activities were significantly moderately related and most patients (55.3%) were in the maintenance phase of the stages of change. Conclusions. COPD patients show a distinctive activity decrease in the early afternoon. COPD patients are moderately aware of their daily activity but regard themselves as physically active. Therefore, future telemedicine interventions might consider creating awareness of an active lifestyle and provide feedback that aims to increase and balance activity levels.