Faculty Collaboration Database

Spinal reflex excitability and homosynaptic depression after a bout of whole-body vibration. Muscle Nerve 2011 Feb;43(2):259-62

Date

01/22/2011

Pubmed ID

21254092

DOI

10.1002/mus.21844

Scopus ID

2-s2.0-78751677284 (requires institutional sign-in at Scopus site)   49 Citations

Abstract

Although whole-body vibration (WBV) affects neuromuscular performance, it remains unclear whether the effects are due to spinal reflex potentiation or inhibition, or differ between muscle groups. This study aimed to identify the effect of WBV on measures of spinal reflex excitability (H-reflex) and homosynaptic depression (HD) in the soleus (SOL) and medial gastrocnemius (MG) muscles. H-reflex and HD measurements were made in the SOL and MG muscle of 20 participants before and after a bout of WBV. H-reflex and HD were measured every 15 seconds for 10 minutes post-WBV and averaged at 1-minute increments. H-reflex amplitude was depressed for the first minute post-vibration, whereas the effect of HD was reduced for the first 2 minutes post-vibration. WBV significantly decreases spinal reflex excitability and HD, but it does so transiently and independent of muscle group.

Author List

Kipp K, Johnson ST, Doeringer JR, Hoffman MA

Author

Kristof Kipp BS,MS,PhD Assistant Professor in the Physical Therapy department at Marquette University

MESH terms used to index this publication - Major topics in bold

Adult
Analysis of Variance
Electric Stimulation
Electromyography
Female
H-Reflex
Humans
Long-Term Synaptic Depression
Male
Muscle Contraction
Muscle, Skeletal
Spinal Cord
Time Factors
Vibration
Young Adult