Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Assessing Cardiorespiratory Fitness in Clinical Rehabilitation: Validity of Field Exercise Tests and Patient-Reported Questionnaires.

American journal of physical medicine & rehabilitation·2026
Same author

Preoperative Physical Fitness and Short-Term Postoperative Outcomes in Patients Undergoing Elective Cardiac Surgery: A Retrospective Cohort Study.

Seminars in cardiothoracic and vascular anesthesia·2026
Same author

Locomotor Profile Influences Physiological and Locomotor Adaptations After 6 Weeks of High-Intensity or Sprint Interval Training in Male and Female Runners.

International journal of sports physiology and performance·2026
Same author

Technological and Biological Reliability, and Validity of Five Different CPET Systems During Simulated and Human Exercise.

Scandinavian journal of medicine & science in sports·2026
Same author

Patient-recorded indexing measurements (PRIMS) - study protocol of a prospective observational cohort study to improve the accuracy of the diagnosis of cancer cachexia.

BMC cancer·2025
Same author

Rethinking Acute Sports Injuries: Evidence for an Overuse Mechanism in Hamstring and ACL Injuries.

Scandinavian journal of medicine & science in sports·2025

Related Experiment Video

Updated: May 8, 2026

Using Near-Infrared Spectroscopy Wearable Devices to Identify Central Versus Peripheral Limitations During Exercise
09:33

Using Near-Infrared Spectroscopy Wearable Devices to Identify Central Versus Peripheral Limitations During Exercise

Published on: December 19, 2024

In-Field Validity and Inter-Unit Variability of Metabolic Carts During Simulated Exercise.

Bas Van Hooren1, Tjeu Souren2, Bart C Bongers1,3

  • 1Department of Nutrition and Movement Sciences, Institute of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, the Netherlands.

Scandinavian Journal of Medicine & Science in Sports
|May 7, 2026
PubMed
Summary

Cardiopulmonary exercise testing (CPET) systems show significant variability in accuracy, even identical units. Caution is advised when using CPET devices interchangeably due to potential measurement errors.

Keywords:
accuracycardiopulmonary exercise testingmetabolic cartprecisionreliabilityrepeatabilitysimulationvalidity

More Related Videos

Determining the Contribution of the Energy Systems During Exercise
11:15

Determining the Contribution of the Energy Systems During Exercise

Published on: March 20, 2012

Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans
07:26

Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans

Published on: October 17, 2018

Related Experiment Videos

Last Updated: May 8, 2026

Using Near-Infrared Spectroscopy Wearable Devices to Identify Central Versus Peripheral Limitations During Exercise
09:33

Using Near-Infrared Spectroscopy Wearable Devices to Identify Central Versus Peripheral Limitations During Exercise

Published on: December 19, 2024

Determining the Contribution of the Energy Systems During Exercise
11:15

Determining the Contribution of the Energy Systems During Exercise

Published on: March 20, 2012

Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans
07:26

Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans

Published on: October 17, 2018

Area of Science:

  • Cardiopulmonary physiology
  • Medical device validation
  • Exercise science

Background:

  • Cardiopulmonary exercise testing (CPET) is crucial for assessing cardiorespiratory fitness and diagnosing conditions.
  • The accuracy of CPET systems relies on precise measurement of respiratory gases.
  • Variability in CPET device performance can impact clinical and research outcomes.

Purpose of the Study:

  • To evaluate the in-field accuracy of commercial CPET systems under typical usage conditions.
  • To quantify accuracy variability among identical CPET units.
  • To investigate the influence of device age and maintenance on CPET accuracy.

Main Methods:

  • Fifty-seven CPET systems were tested in clinical, research, and sports settings.
  • Systems were assessed against a metabolic simulator for breath-by-breath gas exchange accuracy.
  • Measured variables included minute ventilation (V̇E), oxygen uptake (V̇O2), carbon dioxide production (V̇CO2), and respiratory exchange ratio (RER).

Main Results:

  • Absolute percentage errors varied significantly across systems, with V̇E errors up to 24.6%.
  • Inter-unit variability for V̇O2, V̇CO2, and RER often exceeded intra-unit test-retest variability.
  • No consistent correlation was found between system age, maintenance practices, and measurement accuracy.

Conclusions:

  • Commercial CPET systems exhibit substantial in-field accuracy variations, even among identical units.
  • Inter-unit variability necessitates caution when using different CPET devices interchangeably.
  • Both technological and user-related factors contribute to inaccuracies, highlighting the need for comprehensive error identification.