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

Exercise Stress Test01:26

Exercise Stress Test

Introduction
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes

You might also read

Related Articles

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

Sort by
Same author

Fluoroquinolones for TB preventive treatment of contacts exposed to persons with multidrug-resistant TB: a systematic review and meta-analysis.

IJTLD open·2026
Same author

Dosimetric comparison of intensity modulated proton therapy and knowledge-based volumetric arc therapy for left-sided breast cancer.

Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB)·2026
Same author

Methane and carbon dioxide production from dairy bulls selected for divergent enteric methane emissions per unit of feed eaten and that from their daughters.

Journal of dairy science·2025
Same author

A review of once-a-day milking in dairy cow grazing systems.

JDS communications·2023
Same author

Heritabilities and genetic and phenotypic correlations for milk production and fertility traits of spring-calved once-daily or twice-daily milking cows in New Zealand.

Journal of dairy science·2023
Same author

Estimation of genetic parameters and individual and maternal breed, heterosis, and recombination loss effects for production and fertility traits of spring-calved cows milked once daily or twice daily in New Zealand.

Journal of dairy science·2022

Related Experiment Video

Updated: Jul 15, 2026

A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement
08:27

A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement

Published on: February 22, 2022

Time at VO2max during intermittent treadmill running: test protocol dependent or methodological artefact?

A W Midgley1, L R McNaughton, S Carroll

  • 1Department of Sport, Health and Exercise Science, University of Hull, Hull, United Kingdom.

International Journal of Sports Medicine
|May 15, 2007
PubMed
Summary

Methodological differences significantly impact the determination of time to VO2max during intermittent running. Researchers must consider these variations when interpreting results from different studies.

More Related Videos

A Rapidly Incremented Tethered-Swimming Maximal Protocol for Cardiorespiratory Assessment of Swimmers
09:24

A Rapidly Incremented Tethered-Swimming Maximal Protocol for Cardiorespiratory Assessment of Swimmers

Published on: January 28, 2020

Related Experiment Videos

Last Updated: Jul 15, 2026

A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement
08:27

A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement

Published on: February 22, 2022

A Rapidly Incremented Tethered-Swimming Maximal Protocol for Cardiorespiratory Assessment of Swimmers
09:24

A Rapidly Incremented Tethered-Swimming Maximal Protocol for Cardiorespiratory Assessment of Swimmers

Published on: January 28, 2020

Area of Science:

  • Exercise Physiology
  • Sports Science
  • Cardiorespiratory Fitness

Background:

  • Determining maximal oxygen uptake (VO2max) and time to VO2max (tVO2max) is crucial for assessing exercise performance.
  • Methodological variations in testing protocols can influence physiological outcome measures.
  • Previous research has not fully elucidated the impact of specific methodological differences on tVO2max during intermittent exercise.

Purpose of the Study:

  • To investigate the effects of different methodological approaches on the determination of tVO2max during intermittent treadmill running.
  • To compare tVO2max values obtained using various criteria and averaging methods.
  • To highlight the importance of standardized methodologies in exercise testing.

Main Methods:

  • Subjects completed three incremental tests to exhaustion: continuous incremental (Cont-INC) with 1-min stages, discontinuous incremental (Dis-INC) with 2-min stages, and Dis-INC with 3-min stages.
  • VO2max and velocity at VO2max (vVO2max) were determined from each incremental test.
  • A separate intermittent test was conducted, with tVO2max calculated using three criteria based on VO2max values from the Cont-INC test: >=100% VO2max, >=95% VO2max, and >=VO2max minus 2.1 ml.kg(-1).min(-1).

Main Results:

  • VO2max values were similar across the continuous and discontinuous incremental tests.
  • Significant differences (p < 0.05) were found in tVO2max values depending on the criterion used (163s for >=100% VO2max, 418s for >=95% VO2max, 358s for >=VO2max - 2.1 ml.kg(-1).min(-1)).
  • Differences in tVO2max were also significant when using VO2max values derived from different time-averaging methods.

Conclusions:

  • Methodological choices in determining tVO2max during intermittent running significantly affect the results.
  • Variations in criteria for reaching VO2max and time-averaging methods introduce considerable variability.
  • Researchers should carefully consider and report methodological details to ensure accurate interpretation of tVO2max data across studies.