A simple and accurate wearable device to measure ventilatory threshold: principles and validation

Authors

  • Laure Fabre PAIRFS, Grenoble
  • Julien Mottin PAIRFS, Grenoble
  • Pierre Jallon PAIRFS, Grenoble

Keywords:

ventilatory threshold, training zones, breath, wearable

Abstract

Training zones are key for training and yet, there are only limited tools on the market to make accurate measurements. Coggan and CPxx tests lack accuracy, lactate tests require blood samples, are sensitive to food intake and require protocols with long steps, and ventilatory threshold require expensive, bulky and complex laboratory machines. In this paper, we present a novel device to make measurement of training zones based on ventilatory threshold easy and accessible. The measurement principle of the device is presented as well as a validation study.

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References

F. Klitzke Borszcz and al, “Functional Threshold Power in Cyclists: Validity of the Concept and Physiological Responses”, Int J Sports Med 2018;

Anselmi, Francesca & al. The importance of ventilatory thresholds to define aerobic exercise intensity in cardiac patients and healthy subjects. Scandinavian Journal of Medicine & Science in Sports. 31. 10.1111/sms.14007.

Wasserman, K., et al. (2012). Principles of Exercise Testing and Interpretation. Lippincott Williams & Wilkins.

Published

2026-11-02

How to Cite

Fabre, L., Mottin, J., & Jallon, P. (2026). A simple and accurate wearable device to measure ventilatory threshold: principles and validation. Journal of Science and Cycling, 15(2), 32. Retrieved from https://jsc-journal.com/index.php/JSC/article/view/1121