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Acute effect of whole-body vibration on acceleration transmission and jumping performance in children

Matthew Beerse1, Michael Lelko2, Jianhua Wu3

  • 1Department of Health and Sport Science, University of Dayton, Dayton, OH, USA.

Clinical Biomechanics (Bristol, Avon)
|November 22, 2020
PubMed

Insights

Whole-body vibration (WBV) is safe for typically developing children. Vibration transmission decreases with amplitude and increases with frequency, with no immediate impact on jump performance.

Area of Science:

  • Biomechanics
  • Neuromuscular physiology
  • Pediatric physical therapy

Background:

  • Whole-body vibration (WBV) shows promise for children with disabilities, but adult data dominates.
  • Understanding pediatric responses to WBV is crucial for developing effective interventions.
  • Limited research exists on the biomechanical and neuromuscular effects of WBV in children.

Purpose of the Study:

  • To investigate the acute biomechanical and neuromuscular responses in typically developing children (6-11 years) to varying WBV frequencies and amplitudes.
  • To analyze acceleration transmission across body segments during WBV.
  • To assess lower-body muscle activation and post-WBV neuromuscular facilitation.

Main Methods:

  • Seventeen typically developing children (mean age 8.7 years) participated.
  • Six WBV conditions (20, 25, 30 Hz; 1, 2 mm amplitude) were applied for one minute.
  • Motion capture and electromyography measured acceleration transmission and muscle activation; countermovement jumps assessed neuromuscular facilitation.

Main Results:

  • Vertical acceleration decreased from ankle to head, with greater damping between ankle and knee.
  • Higher amplitude reduced acceleration transmission; higher frequency reduced transmission at the knee.
  • Muscle activation increased with frequency during WBV; no significant changes in jump height or post-WBV activation were observed.

Conclusions:

  • WBV appears to be a safe intervention for typically developing children.
  • WBV frequency and amplitude are critical parameters for designing interventions for children, including those with disabilities.
Abstract

Keywords:
BiomechanicsNeuromuscular facilitationNeuromuscular responsePreadolescentsTypically developing

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