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Can Commercially Available Pedometers Be Used For Physical Activity Monitoring In Patients With COPD Following
Valentin Prieto-Centurion1, Nina Bracken2, Lourdes Norwick2
1Division of Pulmonary, Critical Care, Sleep & Allergy, University of Illinois at Chicago.
Chronic Obstructive Pulmonary Diseases (Miami, Fla.)
|August 23, 2016
Summary
Commercially available pedometers show variable accuracy in healthy individuals. The Fitbit Zip accurately measures steps in both healthy volunteers and patients recovering from COPD exacerbations.
Area of Science:
- Biomedical Engineering
- Wearable Technology
- Rehabilitation Science
Background:
- Pedometers are utilized in physical activity promotion studies.
- Pedometers' accuracy in COPD exacerbation recovery is unestablished.
- Assessing device accuracy is crucial for reliable patient monitoring.
Purpose of the Study:
- To evaluate the accuracy of various commercial pedometers in healthy adults.
- To determine the accuracy of the best-performing pedometer in COPD patients post-hospital discharge.
Main Methods:
- Healthy volunteers and COPD patients underwent walking tests with multiple devices.
- Devices included pedometers, smartphones with apps, and accelerometers.
- Bland-Altman analysis compared device counts to direct observation.
Main Results:
- Pedometers exhibited a wide range of accuracy (-49% to +1%) in healthy volunteers.
- The Fitbit Zip showed the lowest error (+1%) in healthy individuals.
- The Fitbit Zip demonstrated good accuracy (-3%) in COPD patients.
Conclusions:
- Commercial pedometer accuracy varies significantly in healthy populations.
- The Fitbit Zip provides accurate step count measurement for both healthy individuals and COPD patients in recovery.
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