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This paper is in the following e-collection/theme issue:

Wearable Devices and Sensors (1245) Research Instruments, Questionnaires, and Tools (805) Ubiquitous Health (uHealth) (136) mHealth for Data Collection and Research (1288) Fitness Trackers and Smart Pedometers/Accelerometers (700) Novel Sensors and Data Acquisition Methods in Cardiology (239) e-Cardiology and Telemonitoring in Cardiology (238) Cardiac Self-Management (157)

Published on in Vol 13 (2025)

Preprints (earlier versions) of this paper are available at https://preprints.jmir.org/preprint/54871, first published .
Smartwatch displaying a heart rate graph on a person's wrist.

Reliability and Accuracy of the Fitbit Charge 4 Photoplethysmography Heart Rate Sensor in Ecological Conditions: Validation Study

Reliability and Accuracy of the Fitbit Charge 4 Photoplethysmography Heart Rate Sensor in Ecological Conditions: Validation Study

Authors of this article:

Maxime Ceugniez1 Author Orcid Image ;   Hervé Devanne1 Author Orcid Image ;   Eric Hermand1, 2 Author Orcid Image
Article Authors Cited by (10) Tweetations Metrics

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  2. Murai F, So R, Matsuo T. Self-assessment of cardiorespiratory fitness: evaluation of reliability and validity of a step test eliminating a step board. European Journal of Applied Physiology 2025;125(10):2999 View
  3. Kang M, Yoon H. Effect of urban green infrastructure on psychological and physiological responses under outdoor heat exposure: An experimental study. Building and Environment 2026;287:113811 View
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  5. Jiao Y. Validity and challenges of optical heart rate sensors in real-time classification of exercise intensity zones. Sensor Review 2026:1 View
  6. Martín-Ruiz J, Ruiz-Sanchis L. Agreement Between Reserve Heart Rate, Perceived Exertion and Wint Index During HIIT Using a Low-Cost ANT+ Armband in University Students. Sensors 2026;26(3):1049 View
  7. Gong X, Jiang D, Wei X, Jiao Z. Exploring the effects of short-term indoor CO 2 exposure on heart rate and cognition in university students: A pilot study. Building Services Engineering Research & Technology 2026 View
  8. Sicbaldi M, Bartoli L, Albites-Sanabria J, D’Ascanio I, Silvani A, Chiari L, Camon A, Palmerini L. Is my smartwatch a valid witness? A systematic review and meta-analysis. Forensic Science International 2026;384:112901 View
  9. Hallenbeck B, Badon S, Xu F, Quesenberry C, Hedderson M. Daily step-count and sleep metrics across pregnancy: an observational analysis of the LEAP cluster randomized clinical trial. SLEEP Advances 2026;7(2) View
  10. Chiba I, Nakaya N, Mugikura S, Kogure M, Hatanaka R, Nakaya K, Tokioka S, Takase M, Nakamura T, Nagaie S, Ogishima S, Obara T, Motoike I, Mori N, Matsui H, Ando T, Kobayashi H, Ogawa T, Tanaka S, Fuse N, Nagami F, Izumi Y, Kuriyama S, Hozawa A. Study Protocol and Characteristics of the Wearable Device Survey for Tohoku Medical Megabank Brain Magnetic Resonance Imaging Study. Journal of Epidemiology 2026 View