Effects of Body Mass Index on Task-Related Oxygen Uptake and Dyspnea during Activities of Daily Life in COPDReport as inadecuate




Effects of Body Mass Index on Task-Related Oxygen Uptake and Dyspnea during Activities of Daily Life in COPD - Download this document for free, or read online. Document in PDF available to download.

Background

Patients with COPD use a higher proportion of their peak aerobic capacity during the performance of domestic activities of daily life ADLs compared to healthy peers, accompanied by a higher degree of task-related symptoms. To date, the influence of body mass index BMI on the task-related metabolic demands remains unknown in patients with COPD. Therefore, the aim of our study was to determine the effects of BMI on metabolic load during the performance of 5 consecutive domestic ADLs in patients with COPD.

Methodology

Ninety-four COPD patients and 20 healhty peers performed 5 consecutive, self-paced domestic ADLs putting on socks, shoes and vest; folding 8 towels; putting away groceries; washing up 4 dishes, cups and saucers; and sweeping the floor for 4 min. Task-related oxygen uptake and ventilation were assessed using a mobile oxycon, while Borg scores were used to assess task-related dyspnea and fatigue.

Principal Findings

1. Relative task-related oxygen uptake after the performance of domestic ADLs was increased in patients with COPD compared to healthy elderly, whereas absolute oxygen uptake is similar between groups; 2. Relative oxygen uptake and oxygen uptake per kilogram fat-free mass were comparable between BMI groups; and 3. Borg symptom scores for dyspnea en fatigue were comparable between BMI groups.

Conclusion

Patients with COPD in different BMI groups perform self-paced domestic ADLs at the same relative metabolic load, accompanied by comparable Borg symptom scores for dyspnea and fatigue.



Author: Anouk W. Vaes , Frits M. E. Franssen, Kenneth Meijer, Martijn W. J. Cuijpers, Emiel F. M. Wouters, Erica P. A. Rutten, Martijn A.

Source: http://plos.srce.hr/



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