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 force augmentation by low-intensity electrical stimulation.

E Langzam1, E Isakov, Y Nemirovsky

  • 1Departmen of Biomedical Enginneering, Israel Institute of Technology, Haifa Israel.

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
|February 7, 2007
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

Coronary calcium scoring on contrast-enhanced spectral coronary computed tomography angiography using a calcium-specific algorithm.

Medical physics·2025
Same author

Inpatient Gastroenterology Workup Prior to Transesophageal Echocardiogram Is of Minimal Benefit to Patients.

Gastro hep advances·2024
Same author

Coronary calcium scoring using virtual non-contrast reconstructions on a dual-layer spectral CT system: Feasibility in the clinical practice.

European journal of radiology·2023
Same author

Benchmarking an 11-qubit quantum computer.

Nature communications·2019
Same author

Low daily MEWS scores as predictors of low-risk hospitalized patients.

QJM : monthly journal of the Association of Physicians·2019
Same author

Ultrafast creation of large Schrödinger cat states of an atom.

Nature communications·2017

Hybrid activation combining electrical stimulation (ES) and volitional effort enhances muscle force. This study found specific ES intensities can significantly boost voluntary muscle activation in the tibialis anterior (TA) muscle.

Area of Science:

  • Biomechanics
  • Neuroscience
  • Muscle Physiology

Background:

  • Muscle force can be augmented through hybrid activation, combining electrical stimulation (ES) with volitional effort.
  • Understanding the interplay between ES and voluntary activation is crucial for rehabilitation and performance enhancement.

Purpose of the Study:

  • To quantify the volitional and electrically-induced torque components during hybrid activation of the tibialis anterior (TA) muscle.
  • To investigate the effect of varying ES intensities on volitional drive and overall torque output.

Main Methods:

  • Isometric contractions of the TA muscle were performed by 5 healthy subjects.
  • Ankle torque and TA electromyography (EMG) were measured under three conditions: ES alone, volitional activation alone, and hybrid activation with visual feedback.

Related Experiment Videos

  • A computational algorithm was developed to differentiate volitional torque from total torque using EMG filtering and calibration curves.

    • Main Results:

    • A facilitation factor was defined to assess the interaction between ES and volitional activation.
    • Results demonstrated that specific ranges of ES intensity can lead to increased facilitation of volitional TA muscle activation.
    • The torque contribution from ES-induced activation was found to be greater than that predicted by the recruitment curve alone within these facilitation regions.

    Conclusions:

    • Hybrid activation, particularly with optimized ES intensity, can effectively enhance voluntary muscle force production.
    • The findings suggest a synergistic effect where ES can potentiate rather than simply summate with volitional effort.
    • This research provides insights into optimizing ES protocols for muscle rehabilitation and performance augmentation.