Cited by 194Physical Activity and HealthContext-Aware Activity Recognition SystemsMobile Health and mHealth Applications

Current State of Commercial Wearable Technology in Physical Activity Monitoring 2015-2017

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Bunn, Jennifer, Navalta, James W., Fountaine, Charles J., Reece, Joel·2018·International Journal of Exercise Science

Abstract

Wearable physical activity trackers are a popular and useful method to collect biometric information at rest and during exercise. The purpose of this systematic review was to summarize recent findings of wearable devices for biometric information related to steps, heart rate, and caloric expenditure for several devices that hold a large portion of the market share. Searches were conducted in both PubMed and SPORTdiscus. Filters included: humans, within the last 5 years, English, full-text, and adult 19+ years. Manuscripts were retained if they included an exercise component of 5-min or greater and had 20 or more participants. A total of 10 articles were retained for this review. Overall, wearable devices tend to underestimate energy expenditure compared to criterion laboratory measures, however at higher intensities of activity energy expenditure is underestimated. All wrist and forearm devices had a tendency to underestimate heart rate, and this error was generally greater at higher exercise intensities and those that included greater arm movement. Heart rate measurement was also typically better at rest and while exercising on a cycle ergometer compared to exercise on a treadmill or elliptical machine. Step count was underestimated at slower walking speeds and in free-living conditions, but improved accuracy at faster speeds. The majority of the studies reviewed in the present manuscript employed different methods to assess validity and reliability of wearable technology, making it difficult to compare devices. Standardized protocols would provide guidance for researchers to evaluate research-grade devices as well as commercial devices used by the lay public.

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Authors
Bunn, J., Navalta, J. W., Fountaine, C. J., & Reece, J.
Affiliations
  • Campbell University (US)
  • University of Nevada, Las Vegas (US)
  • University of Minnesota, Duluth (US)
  • Brigham Young University–Hawaii (US)
Venue
International Journal of Exercise Science
Published
2018
Volume
11
Issue
7
Pages
503-515
ISSN
1939-795X (ISSN-L)
OpenAlex
W2786432503
Cited by
194
References
12
Citations by year
2026: 12 · 2025: 15 · 2024: 20 · 2023: 31 · 2022: 25 · 2021: 22 · 2020: 34 · 2019: 20 · 2018: 14 · 2017: 1
Type
journal article
Language
en
Open access
Licence
cc-by-nd
Locations
  • International journal of exercise science (publishedVersion, cc-by-nd)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • TopSCHOLAR (Western Kentucky University) (submittedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Physical Activity and Health
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Context-Aware Activity Recognition Systems
  • Health Sciences › Health Professions › General Health Professions › Mobile Health and mHealth Applications
Keywords
wearable devices, wearable activity trackers, step count accuracy, heart rate measurement, energy expenditure, underestimation of energy expenditure, exercise intensity, walking speed, device validation, wrist-worn devices, treadmill exercise, cycle ergometry

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