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

Exercise and rest in hyperkalemic periodic paralysis.

S H Subramony, A S Wee

    Neurology
    |February 1, 1986
    PubMed
    Summary

    Muscle immobility reduces compound muscle action potential (CMAP) amplitude and area in hyperkalemic periodic paralysis. Brief exercise may slightly worsen these effects, correlating with rest-induced weakness.

    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

    Cerebellar Ataxia and Chorea: Genetic Etiologies and Key Considerations for Diagnosis and Management.

    Movement disorders clinical practice·2026
    Same author

    Peripheral frataxin levels govern long-term clinical progression in Friedreich ataxia.

    BMJ neurology open·2026
    Same author

    Quantitative Magnetic Resonance Imaging of the Forearm in Myotonic Dystrophy Type 1.

    Tomography (Ann Arbor, Mich.)·2025
    Same author

    Repeat-associated non-AUG translation as a common mechanism for the polyGln ataxias.

    Cell reports·2025
    Same author

    Repeat associated non-AUG translation as a common mechanism for the polyGln ataxias.

    bioRxiv : the preprint server for biology·2025
    Same author

    Friedreich Ataxia.

    Pediatric neurology·2025

    Area of Science:

    • Neurology
    • Clinical Electrophysiology

    Background:

    • Hyperkalemic periodic paralysis is a genetic disorder characterized by episodic muscle weakness.
    • Electrophysiological studies are crucial for understanding neuromuscular function in periodic paralysis.

    Observation:

    • Compound muscle action potential (CMAP) amplitude and area were measured in a family with hyperkalemic periodic paralysis.
    • Measurements were taken during basal state, sustained immobility, and after maximal voluntary exercise.

    Findings:

    • Sustained muscle immobility significantly reduced CMAP amplitude and area, with maximal effects observed after 30 minutes.
    • Prior intense exercise showed minimal accentuation of immobility-induced CMAP changes.
    • Serial CMAP monitoring over 60 minutes revealed no major differences between exercised and non-exercised muscles.

    Implications:

    • Muscle immobility directly alters CMAP in hyperkalemic periodic paralysis.
    • These findings provide an electrophysiological basis for the characteristic weakness experienced after rest following exercise.

    Related Experiment Videos