Abstract
The purpose of this study was to identify changes due to whole body vibration in peroneus
longus (PL) activation following ankle inversion perturbation. Participants were 22
(age 22.1 ± 1.8 yrs, ht 168.8 ± 8.2 cm, mass 65.5 ± 11.2 kg) physically active male
and female students with no recent history of lower extremity injury. Measurements
of PL electromechanical delay (EMD), reaction time, and muscle activation were collected
from two groups (WBV and control) over 3 time intervals (pretreatment, posttreatment,
and 30 min posttreatment). Two-way ANOVAs were used to compare groups over time for
all dependent variables. No group × time interactions were detected (p < 0.05) for
any of the dependent variables. Whole body vibration did not alter PL EMD, reaction
time, peak EMG, or average EMG. The use of WBV for enhancing ankle dynamic stability
was not supported by this study. However, more data are needed to determine if WBV
is an effective intervention in other areas of injury prevention or rehabilitation.
These data were not consistent with the hypothesis that WBV enhances muscle spindle
sensitivity.
Key words
ankle - muscle spindle sensitivity - joint stability
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Dr. PhD, ATC Ty Hopkins
Brigham Young University
Human Performance Research Center
120B RB, 120 RB
84602-2205 Provo, Utah
United States
Phone: + 80 14 22 15 73
Fax: + 80 14 22 05 55
Email: ty_hopkins@byu.edu
