Hartung, Verena and Sarshar, Mustafa and Karle, Viktoria and Shammas, Layal and Rashid, Asarnusch and Roullier, Paul and Eilers, Caroline and Maeurer, Mathias and Flachenecker, Peter and Pfeifer, Klaus and Tallner, Alexander (2020) Validity of Consumer Activity Monitors and an Algorithm Using Smartphone Data for Measuring Steps during Different Activity Types. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 17 (24): 9314. ISSN , 1660-4601
Full text not available from this repository. (Request a copy)Abstract
Background: Consumer activity monitors and smartphones have gained relevance for the assessment and promotion of physical activity. The aim of this study was to determine the concurrent validity of various consumer activity monitor models and smartphone models for measuring steps. Methods: Participants completed three activity protocols: (1) overground walking with three different speeds (comfortable, slow, fast), (2) activities of daily living (ADLs) focusing on arm movements, and (3) intermittent walking. Participants wore 11 activity monitors (wrist: 8; hip: 2; ankle: 1) and four smartphones (hip: 3; calf: 1). Observed steps served as the criterion measure. The mean average percentage error (MAPE) was calculated for each device and protocol. Results: Eighteen healthy adults participated in the study (age: 28.8 +/- 4.9 years). MAPEs ranged from 0.3-38.2% during overground walking, 48.2-861.2% during ADLs, and 11.2-47.3% during intermittent walking. Wrist-worn activity monitors tended to misclassify arm movements as steps. Smartphone data collected at the hip, analyzed with a separate algorithm, performed either equally or even superiorly to the research-grade ActiGraph. Conclusion: This study highlights the potential of smartphones for physical activity measurement. Measurement inaccuracies during intermittent walking and arm movements should be considered when interpreting study results and choosing activity monitors for evaluation purposes.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PHYSICAL-ACTIVITY MONITORS; WEARABLE DEVICES; ACCURACY; PEDOMETER; TRACKERS; accelerometer; accuracy; activity trackers; smartphone; validation study; walking; activities of daily living |
| Subjects: | 300 Social sciences > 370 Education |
| Divisions: | Human Sciences > Institut für Bildungswissenschaft > Lehrstuhl für Schulpädagogik (Prof. Dr. Heidrun Stöger) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Mar 2021 06:29 |
| Last Modified: | 08 Mar 2021 06:29 |
| URI: | https://pred.uni-regensburg.de/id/eprint/43234 |
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