Effect of an Acute Bout of Whole Body Vibration Exercise on Muscle Force Output and Motor Neuron Excitability
- ASU Author/Contributor (non-ASU co-authors, if there are any, appear on document)
- N. Travis Triplett Ph.D., Professor (Creator)
- Institution
- Appalachian State University (ASU )
- Web Site: https://library.appstate.edu/
Abstract: The purpose of
the current investigation was to assess the effect of an acute
bout of whole body vibration (WBV) exercise on muscle force
output and motor neuron excitability. Nineteen recreationally
trained college-aged males were randomly assigned to a WBV
(n = 10) or a sham (S, n = 9) group. The WBV group completed
a series of static, body weight squats on a vibrating platform
at 30 Hz and an amplitude of ~3.5 mm (vertical), whereas the S
group performed the same series of exercises but without
vibration. Measurements were performed before (Pre) and then
immediately post-exercise (Imm Post), 8 minutes post-exercise
(8-Min Post), or 16 minutes post-exercise (16-Min Post) during
3 different testing sessions. The measurements involved a
ballistic isometric maximum voluntary contraction (MVC) of
the triceps surae muscle complex and electrical stimulation of
the tibial nerve for assessment of motor neuron excitability by
analyzing H-reflex and M-wave responses (Hmax/Mmax ratio).
Electromyography was also obtained from the triceps surae
muscle complex during the MVCs. The WBV group significantly
(p <= 0.05) increased peak force at Imm Post (9.4%) and 8-Min
Post (10.4%). No significant change in peak force was
observed in the S group. No significant changes were observed
in either group for average integrated EMG, Hmax/Mmax ratio, or
rate of force development at Imm Post, 8-Min Post, or 16-Min
Post. The results from this investigation indicate that an acute
bout of static, body weight squat exercises, combined
with WBV, increases muscle force output up to 8 minutes
post-exercise. However, this increase in muscle force is not
accompanied by a significant increase in motor neuron
excitability or muscle activation. Thus, it is plausible to use
WBV as a method for acute increase in muscle force output for
athletes immediately before competition.
Effect of an Acute Bout of Whole Body Vibration Exercise on Muscle Force Output and Motor Neuron Excitability
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Created on 6/17/2011
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Additional Information
- Publication
- McBride, J.M., Nuzzo, J.L., Dayne, A.M., Israetel, M.A., Nieman, D.C., and Triplett, N.T. (2010) Effect of an acute bout of whole body vibration exercise on muscle force output and motor neuron excitability. Journal of Strength and Conditioning Research 24(1), 184-189. Published by National Strength and Conditioning Association (ISSN: 1533-4287). Original version available from publisher’s web site: http://www.nsca-lift.org
- Language: English
- Date: 2010