Accuracy of Distance Recordings in Eight Positioning-Enabled Sport Watches: Instrument Validation Study
| Autor: | Thomas Wyss, Theresa Schweizer, Rahel Gilgen-Ammann |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Systematic error
Validation study monitoring physical training Health Informatics Walking Information technology movement analysis Running GPS measurement error 03 medical and health sciences 0302 clinical medicine Statistics Humans Elite athletes 030212 general & internal medicine Track and field athletics geographic information systems Original Paper 030229 sport sciences T58.5-58.64 Movement analysis Athletes GNSS applications geographic locations Environmental science sports Public aspects of medicine RA1-1270 Cycling |
| Zdroj: | JMIR mHealth and uHealth, Vol 8, Iss 6, p e17118 (2020) JMIR mHealth and uHealth |
| ISSN: | 2291-5222 |
| Popis: | Background Elite athletes and recreational runners rely on the accuracy of global navigation satellite system (GNSS)–enabled sport watches to monitor and regulate training activities. However, there is a lack of scientific evidence regarding the accuracy of such sport watches. Objective The aim was to investigate the accuracy of the recorded distances obtained by eight commercially available sport watches by Apple, Coros, Garmin, Polar, and Suunto when assessed in different areas and at different speeds. Furthermore, potential parameters that affect the measurement quality were evaluated. Methods Altogether, 3 × 12 measurements in urban, forest, and track and field areas were obtained while walking, running, and cycling under various outdoor conditions. Results The selected reference distances ranged from 404.0 m to 4296.9 m. For all the measurement areas combined, the recorded systematic errors (±limits of agreements) ranged between 3.7 (±195.6) m and –101.0 (±231.3) m, and the mean absolute percentage errors ranged from 3.2% to 6.1%. Only the GNSS receivers from Polar showed overall errors Conclusions The recorded distances might be underestimated by up to 9%. However, the use of all investigated sport watches can be recommended, especially for distance recordings in open areas. |
| Databáze: | OpenAIRE |
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