A laboratory study to quantify the biomechanical responses to whole-body vibration: The influence on balance, reflex response, muscular activity and fatigue

2008 ◽  
Vol 38 (7-8) ◽  
pp. 626-639 ◽  
Author(s):  
Brenda R. Santos ◽  
Christian Larivière ◽  
Alain Delisle ◽  
André Plamondon ◽  
Paul-Émile Boileau ◽  
...  
Keyword(s):  
Laboratory Study ◽  
Whole Body Vibration ◽  
Muscular Activity ◽  
Reflex Response ◽  
Whole Body ◽  
Body Vibration ◽  
Biomechanical Responses

scholarly journals Can Whole-Body Vibration Exercises in Different Positions Change Muscular Activity of Upper Limbs? A Randomized Trial

Dose-Response ◽  
2018 ◽  
Vol 16 (4) ◽  
pp. 155932581880436 ◽  
Author(s):  
Danielle S Morel ◽  
Pedro J Marín ◽  
Eloá Moreira-Marconi ◽  
Carla F Dionello ◽  
Mario Bernardo-Filho
Keyword(s):  
Muscle Activation ◽  
Handgrip Strength ◽  
Whole Body Vibration ◽  
Muscular Activity ◽  
Whole Body ◽  
Acute Effects ◽  
Body Vibration ◽  
Test Sets ◽  
Flexor Digitorum ◽  
Push Up

The aim of this study was to investigate the acute effects of whole-body vibration exercises (WBVE) in different positions on muscular activity of flexor digitorum superficialis (FD), wrist extensor (ED), and handgrip strength (HG) of healthy men. Fifteen participants have performed 5 test sets each one consisting of HG strength measurement and 1-minute WBVE intervention (frequency: 50 Hz, amplitude: 1.53 mm, synchronous tri-planar oscillating/vibratory platform), that could be control (no exposition to vibration), squat (30 seconds of rest and 30 seconds of WBVE in squat position), or push-up (30 seconds of rest, and 30 seconds of WBVE in push-up position). After testing, participants had 2 minutes of rest and then were encouraged to keep themselves on a pull-up bar for 30 seconds. During all procedures, muscular activity of FD and ED was measured by surface electromyography (EMG). Statistical analysis has revealed that the EMG measured in the FD during the static pull-up bar exercise after SQUAT condition was significantly higher ( P = .004) than the CONTROL and PUSH-UP conditions. Whole-body vibration exercises in squat position increase acutely muscle activation of the FD during isometric exercises of longer duration, while muscle activation of ED and HG strength are not affected by WBVE.

Is the Acute and Short-Term Effect of Whole-Body Vibration the Same on the H-Reflex Recruitment Curve and Agility?

2016 ◽  
Vol 25 (4) ◽  
pp. 348-356 ◽  
Author(s):  
Morteza Ahmadi ◽  
Giti Torkaman ◽  
Sedigheh Kahrizi ◽  
Mojdeh Ghabaee ◽  
Leila Dadashi Arani
Keyword(s):  
Outcome Measures ◽  
Whole Body Vibration ◽  
H Reflex ◽  
Reflex Response ◽  
Whole Body ◽  
Threshold Intensity ◽  
Short Term ◽  
Recruitment Curve ◽  
Body Vibration ◽  
Vibration Training

Context:Despite the widespread use of whole-body vibration (WBV), especially in recent years, its neurophysiological mechanism is still unclear and it is yet to be determined whether acute and short-term WBV exposure produce neurogenic enhancement for agility.Objective:To compare the acute and short-term effects of WBV on the H-reflex-recruitment curve and agility.Design:Cross-over study.Setting:Clinical electrophysiology laboratory.Participants:20 nonathlete male volunteers (mean age 24.85 ± 3.03 y).Main Outcome Measures:Subjects were randomly divided into 2 groups, H-reflex and agility. In the sham protocol, subjects stood on the turned-off vibration plate while maintaining the semisquat position, and then, after a 2-wk washout, vibration-training sessions were performed in the same position with a frequency of 30 Hz and an amplitude of 3 mm. H-reflex-recruitment curve was recorded and the agility test of a shuttle run was performed before and after the first session and also 48 h after the 11th session in both sham and vibration-training protocols.Results:Acute effects of WBV training caused a significant decrease of threshold amplitude and H-max/M-max (P = .01 and P = .04, respectively). Short-term WBV training significantly decreased the threshold intensity of the soleus H-reflex-recruitment curve (P = .01) and caused a decrease and increase respectively, in the threshold intensity and the area under the recruitment curve.Conclusions:The results suggest an inhibitory effect of acute WBV training on the H-reflex response.

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