ArticleJMIR mHealth and uHealth2020
Accuracy of Distance Recordings in Eight Positioning-Enabled Sport Watches: Instrument Validation Study.
Article in JMIR mHealth and uHealth, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed.
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- Consumer Smartwatch Technology in Health and Performance Research: Validity, Limitations, and Real-World Applications.Sensors (Basel, Switzerland) · 2026Review
- Training load and intensity in triathlon: objective differences between sex, age, race distance preference and training phase across a cohort of 95 age-group triathletes over six months.Frontiers in sports and active living · 2026Article
- Verbal encouragement in coaching: enhancing small-sided game performance in youth basketball players.Frontiers in psychology · 2025Article
- Validity of Current Smartwatches for Triathlon Training: How Accurate Are Heart Rate, Distance, and Swimming Readings?Sensors (Basel, Switzerland) · 2024Article
- Defining Activity Thresholds Triggering a "Stand Hour" for Apple Watch Users: Cross-Sectional Study.JMIR formative research · 2024Article
- Spatiotemporal parameters and kinematics differ between race stages in trail running-a field study.Frontiers in sports and active living · 2024Article
- Gait Variability at Different Walking Speeds.Journal of functional morphology and kinesiology · 2023Article
- Validity and reliability of Polar M400 GPS watches for measuring distances covered by team sports players.Heliyon · 2023Article
- Consumer Wearable Health and Fitness Technology in Cardiovascular Medicine: JACC State-of-the-Art Review.Journal of the American College of Cardiology · 2023Review
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- Augmented Cooper test: Biomechanical contributions to endurance performance.Frontiers in sports and active living · 2022Article
- Connected model to optimize performance.Frontiers in sports and active living · 2022Article
- Research on User Experience of Sports Smart Bracelet Based on Fuzzy Comprehensive Appraisal and SSA-BP Neural Network.Computational intelligence and neuroscience · 2022Article
- Heart Rate and Distance Measurement of Two Multisport Activity Trackers and a Cellphone App in Different Sports: A Cross-Sectional Validation and Comparison Field Study.Sensors (Basel, Switzerland) · 2021Article
- Smart Watch Versus Classic Receivers: Static Validity of Three GPS Devices in Different Types of Built Environments.Sensors (Basel, Switzerland) · 2021Article
- Evaluation of COVID-19 Restrictions on Distance Runners' Training Habits Using Wearable Trackers.Frontiers in sports and active living · 2021Article
- Article
- What possibly affects nighttime heart rate? Conclusions from N-of-1 observational data.Digital healthArticle
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundElite 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.
objectiveThe 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.
methodsAltogether, 3 × 12 measurements in urban, forest, and track and field areas were obtained while walking, running, and cycling under various outdoor conditions.
resultsThe 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 <5%. Generally, the recorded distances were significantly underestimated (all P values <.04) and less accurate in the urban and forest areas, whereas they were overestimated but with good accuracy in 75% (6/8) of the sport watches in the track and field area. Furthermore, the data assessed during running showed significantly higher error rates in most devices compared with the walking and cycling activities.
conclusionsThe 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.
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