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

Glycogen depletion patterns in horses performing maximal exercise.

D R Hodgson, R J Rose, J R Allen

    Research in Veterinary Science
    |March 1, 1984
    PubMed
    Summary

    Competitive horse trials significantly deplete muscle glycogen. Both 800m and 1200m races reduced glycogen stores and altered the staining intensity of type IIA and IIB muscle fibres.

    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

    Extracorporeal shockwave therapy raises mechanical nociceptive threshold in horses with thoracolumbar pain.

    Equine veterinary journal·2019
    Same author

    Pharmacokinetics and safety of repeated oral dosing of acetaminophen in adult horses.

    Equine veterinary journal·2019
    Same author

    PD-L1 and immune infiltrates are differentially expressed in distinct subgroups of gastric cancer.

    Oncoimmunology·2019
    Same author

    Pharmacokinetics of firocoxib after intravenous administration of multiple consecutive doses in neonatal foals.

    Journal of veterinary pharmacology and therapeutics·2017
    Same author

    Seroprevalence of Borrelia burgdorferi in Horses Presented for Coggins Testing in Southwest Virginia and Change in Positive Test Results Approximately 1 Year Later.

    Journal of veterinary internal medicine·2016
    Same author

    Impact of KRAS codon subtypes from a randomised phase II trial of selumetinib plus docetaxel in KRAS mutant advanced non-small-cell lung cancer.

    British journal of cancer·2015

    Area of Science:

    • Equine Exercise Physiology
    • Muscle Biochemistry
    • Sports Science

    Background:

    • Understanding muscle energy metabolism is crucial for equine athletic performance.
    • Glycogen is a primary energy source for skeletal muscle during intense exercise.
    • Barrier trials represent a significant physiological stress for horses.

    Purpose of the Study:

    • To investigate the impact of barrier trials on equine muscle glycogen.
    • To analyze changes in different muscle fiber types (I, IIA, IIB) post-exercise.
    • To compare glycogen depletion across different trial distances (800m vs. 1200m).

    Main Methods:

    • Muscle biopsies were collected from horses before and after 800m or 1200m barrier trials.
    • Histochemical staining (myosin ATPase, PAS reaction) identified muscle fiber types and glycogen content.
    • Fluorimetric analysis quantified total muscle glycogen levels.

    Main Results:

    • Significant decreases in total muscle glycogen were observed post-trial in both 800m and 1200m groups.
    • No significant difference in glycogen depletion was found between the 800m and 1200m trials.
    • A decrease in high-glycogen type IIA and IIB fibers and an increase in medium-glycogen fibers were noted post-trial.

    Conclusions:

    • Barrier trials lead to substantial muscle glycogen depletion in horses.
    • Exercise intensity or duration in these trials similarly impacts glycogen stores.
    • Shifts in muscle fiber glycogen intensity suggest utilization during intense exercise.

    Related Experiment Videos