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 Experiment Videos

Relationships between minute ventilation, oxygen uptake, and time during incremental exercise.

R D Fairshter, K Salness, J Walters

    Respiration; International Review of Thoracic Diseases
    |January 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    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

    The 1999 annual report of the Regional Infant and Child Mortality Review Committee.

    South Dakota journal of medicine·2000
    Same author

    Using content analysis of video-recorded consultations to identify smokers' "readiness" and "resistance" towards stopping smoking.

    Patient education and counseling·2000
    Same author

    Analysis of the effects of treatment of human Schistosoma mansoni infection on the immune response of patients from endemic areas.

    Acta tropica·2000
    Same author

    A comparison of individual and population smoking data from a postal survey and general practice records.

    The British journal of general practice : the journal of the Royal College of General Practitioners·2000
    Same author

    Frequent loss of BRCA1 mRNA and protein expression in sporadic ovarian cancers.

    International journal of cancer·2000
    Same author

    Detection of the exotic mosquito Culex gelidus in the Northern Territory.

    Communicable diseases intelligence·2000

    Incremental exercise reveals exponential increases in blood lactate, challenging the traditional anaerobic threshold concept. Findings suggest metabolic changes are gradual, not abrupt, during progressive exercise.

    Area of Science:

    • Exercise Physiology
    • Sports Science
    • Human Physiology

    Background:

    • Recent studies indicate exponential increases in blood and muscle lactate during incremental exercise.
    • This challenges the established concept of a distinct 'anaerobic threshold'.
    • Further investigation is needed to understand metabolic responses during progressive exertion.

    Purpose of the Study:

    • To investigate the relationship between minute ventilation (VE), exercise time, and oxygen uptake (VO2) during incremental exercise.
    • To clarify the metabolic response to progressive exercise and its implications for the anaerobic threshold concept.
    • To compare exercise variables obtained from short-duration versus quasi-steady-state incremental tests.

    Main Methods:

    • Examined relationships between minute ventilation (VE), time, and oxygen uptake (VO2) in healthy subjects during incremental exercise.

    Related Experiment Videos

  • Modeled VE as an exponential function of exercise time and VO2.
  • Compared physiological variables from 30-second incremental tests with quasi-steady-state incremental tests using cycle and treadmill ergometry.

    • Main Results:

    • Minute ventilation (VE) demonstrated a curvilinear relationship with both exercise time and oxygen uptake (VO2).
    • VE was reliably described as an exponential function of exercise time (r2 = 0.96) and VO2 (r2 = 0.92).
    • Most maximal exercise variables, except heart rate, were comparable between short-duration and quasi-steady-state incremental tests.

    Conclusions:

    • The data support the notion that metabolic changes and oxygen availability do not shift abruptly during progressive exercise.
    • Results from rapid incremental and quasi-steady-state exercise tests are generally comparable in healthy individuals.
    • These findings contribute to a nuanced understanding of exercise physiology and the interpretation of exercise testing.