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

Decrease in maximal voluntary contraction by tonic vibration applied to a single synergist muscle in humans.

M Kouzaki1, M Shinohara, T Fukunaga

  • 1Laboratory of Sports Sciences, Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Meguro, Tokyo, Japan. kouzaki@idaten.c.u-tokyo.jp

Journal of Applied Physiology (Bethesda, Md. : 1985)
|September 28, 2000
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

Laparoscopic colectomy for complicated sigmoid colon diverticulitis: a video vignette.

Techniques in coloproctology·2024
Same author

Correction: Species-differences in the in vitro biotransformation of trifluoroethene (HFO-1123).

Archives of toxicology·2023
Same author

Species-differences in the in vitro biotransformation of trifluoroethene (HFO-1123).

Archives of toxicology·2023
Same author

Correction to: Denosumab-related osteonecrosis of the jaw after tooth extraction and the effects of a short drug holiday in cancer patients: a multicenter retrospective study.

Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·2023
Same author

Shallow slow earthquakes to decipher future catastrophic earthquakes in the Guerrero seismic gap.

Nature communications·2021
Same author

Denosumab-related osteonecrosis of the jaw after tooth extraction and the effects of a short drug holiday in cancer patients: a multicenter retrospective study.

Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·2021

Prolonged muscle vibration of the rectus femoris (RF) significantly reduced maximal voluntary contraction (MVC) and force development rate. This suggests that impaired Ia afferent signals from a single synergist muscle can impact overall muscle performance.

Area of Science:

  • Neuromuscular Physiology
  • Muscle Mechanics
  • Motor Control

Background:

  • Muscle vibration can alter sensory feedback, potentially influencing motor output.
  • Understanding the effects of localized vibration on muscle function is crucial for rehabilitation and performance enhancement.

Purpose of the Study:

  • To investigate the impact of prolonged tonic vibration on a single synergist muscle (rectus femoris) on maximal voluntary contraction (MVC) and maximal rate of force development (dF/dtmax).

Main Methods:

  • Maximal voluntary contraction (MVC) force and surface electromyogram (EMG) of the rectus femoris (RF), vastus lateralis (VL), and vastus medialis (VM) were recorded before and after 30 minutes of 30 Hz vibration applied to the RF.
  • Integrated EMG (iEMG) was analyzed for changes in muscle activation.

Related Experiment Videos

Main Results:

  • A significant decrease in MVC force, dF/dtmax, and integrated EMG (iEMG) of the RF was observed post-vibration.
  • No significant changes in the iEMG of the synergist muscles (VL and VM) were detected.

Conclusions:

  • Prolonged tonic vibration applied to a single synergist muscle can attenuate its voluntary force production and rate of force development.
  • These findings suggest that reduced Ia afferent input from the vibrated muscle may contribute to the observed decline in MVC and dF/dtmax.
  • The results highlight the role of specific muscle afferent feedback in maintaining overall neuromuscular performance.