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

Perceived exertion associated with breathing hyperoxic mixtures during submaximal work

P D Allen, K B Pandolf

    Medicine and Science in Sports
    |January 1, 1977
    PubMed
    Summary

    Breathing higher oxygen levels significantly reduced perceived exertion (RPE) during moderate and heavy exercise. This effect was linked to lower blood lactate levels, suggesting a connection between oxygen intake and exercise intensity perception.

    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

    TRPC3/6 channels appear to mediate the enhanced extracellular cationic influx in human malignant hyperthermia.

    British journal of anaesthesia·2024
    Same author

    The Mechanical Properties of <i>in Situ</i> Canine Skeletal Muscle.

    Frontiers in physiology·2022
    Same author

    Understanding malignant hyperthermia: each move forward opens our eyes to the distance left to travel.

    British journal of anaesthesia·2018
    Same author

    Is malignant hyperthermia associated with hyperglycaemia?

    British journal of anaesthesia·2018
    Same author

    Malignant hyperthermia, environmental heat stress, and intracellular calcium dysregulation in a mouse model expressing the p.G2435R variant of RYR1.

    British journal of anaesthesia·2018
    Same author

    Assessing the pathogenicity of RYR1 variants in malignant hyperthermia.

    British journal of anaesthesia·2017

    Area of Science:

    • Exercise Physiology
    • Sports Science
    • Human Performance

    Background:

    • Perceived exertion (RPE) is a subjective measure of exercise intensity.
    • Inspired oxygen concentration can potentially influence physiological responses during physical activity.
    • Understanding factors affecting RPE is crucial for optimizing training and performance.

    Purpose of the Study:

    • To investigate the impact of enriched inspired oxygen on RPE during running at submaximal intensities.
    • To determine if breathing a hyperoxic mixture affects physiological parameters like heart rate and ventilation.
    • To explore the relationship between RPE and blood lactate levels under different oxygen conditions.

    Main Methods:

    • Twelve male subjects ran at 50% and 80% VO2 max on a treadmill.

    Related Experiment Videos

  • Participants breathed either normal air or an 80% O2-20% N2 mixture in a single-blind, randomized order.
  • Measurements included RPE, heart rate, ventilation, and blood lactate before, during, and after exercise.

    • Main Results:

    • Breathing 80% oxygen significantly reduced RPE at both 50% and 80% VO2 max.
    • Blood lactate levels were significantly lower when breathing the hyperoxic mixture.
    • No significant differences in heart rate, ventilation, or respiratory rate were observed between conditions.

    Conclusions:

    • Inspired oxygen concentration significantly affects RPE during moderate and heavy exercise.
    • Reduced RPE under hyperoxia may be associated with lower blood lactate accumulation.
    • A significant correlation exists between RPE and blood lactate levels at the end of exercise.