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

Muscle triglyceride utilization during exercise: effect of training.

B F Hurley, P M Nemeth, W H Martin

    Journal of Applied Physiology (Bethesda, Md. : 1985)
    |February 1, 1986
    PubMed
    Summary

    Endurance exercise training enhances fat utilization during exercise. Trained individuals show increased breakdown of muscle triglycerides, fueling greater fatty acid use.

    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

    Exercise training, genetics and type 2 diabetes-related phenotypes.

    Acta physiologica (Oxford, England)·2012
    Same author

    Nitro-oxidative stress biomarkers in active and inactive men.

    International journal of sports medicine·2012
    Same author

    Guidelines for diagnosing osteoporosis.

    The Physician and sportsmedicine·2010
    Same author

    Effects of endurance exercise training on markers of cholesterol absorption and synthesis.

    Physiological research·2008
    Same author

    Effect of raloxifene after recombinant teriparatide [hPTH(1-34)] treatment in postmenopausal women with osteoporosis.

    Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·2007
    Same author

    Can dual energy X-ray absorptiometry provide a valid assessment of changes in thigh muscle mass with strength training in older adults?

    European journal of clinical nutrition·2007

    Area of Science:

    • Exercise Physiology
    • Metabolic Adaptations
    • Muscle Metabolism

    Background:

    • Endurance training lowers respiratory exchange ratio (RER) during submaximal exercise.
    • This occurs despite lower plasma free fatty acids (FFA) and glycerol, suggesting altered substrate utilization.
    • The role of intramuscular triglycerides (IMTG) in trained individuals requires further investigation.

    Purpose of the Study:

    • To investigate whether lipolysis of muscle triglycerides is elevated in endurance-trained individuals.
    • To examine substrate utilization during prolonged exercise before and after training.

    Main Methods:

    • Nine adult males underwent a 12-week endurance training program.
    • Exercise tests at 64% maximum O2 uptake were performed pre- and post-training.

    Related Experiment Videos

  • Measurements included RER, plasma FFA and glycerol, and muscle triglyceride content.

    • Main Results:

    • Trained state showed lower RER and plasma FFA/glycerol during exercise.
    • Proportion of energy from fat increased from 35% to 57% post-training.
    • Muscle glycogen use decreased 41%, while muscle triglyceride breakdown doubled in the trained state.

    Conclusions:

    • Endurance training increases reliance on fat oxidation during exercise.
    • Elevated lipolysis of muscle triglycerides contributes to enhanced FFA availability and utilization in trained individuals.