Muscle activity and vibration transmissibility during whole‐body vibration in chronic stroke

2019 ◽  
Vol 29 (6) ◽  
pp. 816-825 ◽  
Author(s):  
Meizhen Huang ◽  
Marco Y. C. Pang
Keyword(s):  
Muscle Activity ◽  
Whole Body Vibration ◽  
Chronic Stroke ◽  
Whole Body ◽  
Body Vibration ◽  
Vibration Transmissibility

scholarly journals Effects of Vibration Intensity, Exercise, and Motor Impairment on Leg Muscle Activity Induced by Whole-Body Vibration in People With Stroke

2015 ◽  
Vol 95 (12) ◽  
pp. 1617-1627 ◽  
Author(s):  
Lin-Rong Liao ◽  
Gabriel Y.F. Ng ◽  
Alice Y.M. Jones ◽  
Raymond C.K. Chung ◽  
Marco Y.C. Pang
Keyword(s):  
Muscle Activity ◽  
High Intensity ◽  
Whole Body Vibration ◽  
Motor Impairment ◽  
Chronic Stroke ◽  
Whole Body ◽  
Emg Activity ◽  
Body Vibration ◽  
Low Intensity ◽  
Leg Muscle

Background Whole-body vibration (WBV) has increasingly been used as an adjunct treatment in neurological rehabilitation. However, how muscle activation level changes during exposure to different WBV protocols in individuals after stroke remains understudied. Objective The purpose of this study was to examine the influence of WBV intensity on the magnitude of biceps femoris (BF) and tibialis anterior (TA) muscle activity and its interaction with exercise and with severity of motor impairment and spasticity among individuals with chronic stroke. Methods Each of the 36 individuals with chronic stroke (mean age=57.3 years, SD=10.7) performed 8 different static exercises under 3 WBV conditions: (1) no WBV, (2) low-intensity WBV (frequency=20 Hz, amplitude=0.60 mm, peak acceleration=0.96g), and (3) high-intensity WBV (30 Hz, 0.44 mm, 1.61g). The levels of bilateral TA and BF muscle activity were recorded using surface electromyography (EMG). Results The main effect of intensity was significant. Exposure to the low-intensity and high-intensity protocols led to a significantly greater increase in normalized BF and TA muscle electromyographic magnitude in both legs compared with no WBV. The intensity × exercise interaction also was significant, suggesting that the WBV-induced increase in EMG activity was exercise dependent. The EMG responses to WBV were similar between the paretic and nonparetic legs and were not associated with level of lower extremity motor impairment and spasticity. Limitations Leg muscle activity was measured during static exercises only. Conclusions Adding WBV during exercise significantly increased EMG activity in the TA and BF muscles. The EMG responses to WBV in the paretic and nonparetic legs were similar and were not related to degree of motor impairment and spasticity. The findings are useful for guiding the design of WBV training protocols for people with stroke.

Leg Muscle Activity during Whole-Body Vibration in Individuals with Chronic Stroke

2014 ◽  
Vol 46 (3) ◽  
pp. 537-545 ◽  
Author(s):  
LIN-RONG LIAO ◽  
FREDDY M. H. LAM ◽  
MARCO Y. C. PANG ◽  
ALICE Y. M. JONES ◽  
GABRIEL Y. F. NG
Keyword(s):  
Muscle Activity ◽  
Whole Body Vibration ◽  
Chronic Stroke ◽  
Whole Body ◽  
Body Vibration ◽  
Leg Muscle

Effects of Whole Body Vibration on the Horse: Actual Vibration, Muscle Activity, and Warm-up Effect

2017 ◽  
Vol 51 ◽  
pp. 54-60 ◽  
Author(s):  
Heinz Hans Florian Buchner ◽  
Lisa Zimmer ◽  
Louisa Haase ◽  
Justine Perrier ◽  
Christian Peham
Keyword(s):  
Muscle Activity ◽  
Whole Body Vibration ◽  
Whole Body ◽  
Warm Up ◽  
Body Vibration

Comparisons of Whole Body Vibration, Muscle Activity and Non-driving Task Performance between Different Seat Suspensions in an Autonomous Passenger Car Application

2018 ◽  
Vol 62 (1) ◽  
pp. 1848-1852
Author(s):  
Kiana Kia ◽  
Peter W Johnson ◽  
Jeong Ho Kim
Keyword(s):  
Task Performance ◽  
Muscle Activity ◽  
Whole Body Vibration ◽  
Active Suspension ◽  
Whole Body ◽  
Low Back ◽  
Motion Platform ◽  
Body Vibration ◽  
Pointing Task ◽  
Driving Task

This study compared whole body vibration (WBV), muscle activity and non-driving task performance between different seat suspension settings in a simulated autonomous passenger car environment. To simulate autonomous vehicle environment, field-measured vibration profiles were recreated on a large-scale 6-degree-of-freedom motion platform. In a repeated-measures laboratory experiment, we measured whole body vibration, muscle activity (neck, shoulder and low back), participants non-driving task performance while participants performed non-driving tasks (pointing task with a laptop trackpad, keyboard typing, web-browsing, and reading) on three different suspension seats mounted on the motion platform: vertical (z-axis) electromagnetic active suspension, multi-axial (lateral (y-axis) and vertical (z-axis)) electromagnetic active suspension, and no suspension (industry standard suspension-less seat for passenger cars). The average weighted vibration [A(8)] and vibration dose value [VDV(8)] showed that the seat measured vibration on both the vertical [A(8) = 0.29 m/s2 and VDV(8) = 10.70 m/s1.75] and multi-axial suspension seats [A(8) = 0.29 m/s2 and VDV(8) = 10.22m/s1.75] were lower than no-suspension seat vibration [A(8) = 0.36 m/s2 and VDV(8) = 12.84 m/s1.75]. Despite the significant differences in WBV between the different suspensions there were no significant differences across three different suspension seats in typing performance (typing speed and accuracy: p’s > 0.83), pointing task performance (movement time and accuracy: p’s > 0.87), web-browsing (number of questions and webpages read: p = 0.42), and reading (number of words read: p = 0.30). The muscle activity in low back (erector spinae) and shoulder (trapezius) muscles also did not show any significant differences (p’s > 0.22). These laboratory study findings indicated that despite the significant reduction in WBV, neither vertical nor multi-axial active suspension seats improve non-driving task performance as compared to the no-suspension seat.

Acute Effects of Whole-Body Vibration on Muscle Activity, Strength, and Power

2006 ◽  
Vol 20 (2) ◽  
pp. 257 ◽  
Author(s):  
Prue Cormie ◽  
Russell S. Deane ◽  
N. Travis Triplett ◽  
Jeffrey M. McBride
Keyword(s):  
Muscle Activity ◽  
Whole Body Vibration ◽  
Whole Body ◽  
Acute Effects ◽  
Body Vibration
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