European Journal of Applied Physiology

, Volume 108, Issue 5, pp 877–904

Vibration as an exercise modality: how it may work, and what its potential might be

Invited Review

DOI: 10.1007/s00421-009-1303-3

Cite this article as:
Rittweger, J. Eur J Appl Physiol (2010) 108: 877. doi:10.1007/s00421-009-1303-3

Abstract

Whilst exposure to vibration is traditionally regarded as perilous, recent research has focussed on potential benefits. Here, the physical principles of forced oscillations are discussed in relation to vibration as an exercise modality. Acute physiological responses to isolated tendon and muscle vibration and to whole body vibration exercise are reviewed, as well as the training effects upon the musculature, bone mineral density and posture. Possible applications in sports and medicine are discussed. Evidence suggests that acute vibration exercise seems to elicit a specific warm-up effect, and that vibration training seems to improve muscle power, although the potential benefits over traditional forms of resistive exercise are still unclear. Vibration training also seems to improve balance in sub-populations prone to fall, such as frail elderly people. Moreover, literature suggests that vibration is beneficial to reduce chronic lower back pain and other types of pain. Other future indications are perceivable.

Keywords

Mechanical oscillation Training Rehabilitation Physical medicine Safety ISO standard 

Nomenclature

a

Acceleration, m s−2

aPeak

Peak acceleration, i.e. largest acceleration within one vibration cycle. For sinusoidal oscillations given by ω2A (Eq. 1), m s−2

aRMS

Mean acceleration, i.e. average acceleration over an entire vibration cycle. For sinusoidal oscillations given by aPeak/√2 (Eq. 2), m s−2

A

Amplitude of the oscillation. In other words, the displacement of the oscillating actuator is between −A and A, m

BMD

Bone mineral density

D

Damping factor, given by the ratio of the attenuation coefficient and ω0

EMG

Electromyography

f

Frequency of the oscillation, i.e. the number of vibratory cycles per unit time. Therefore, 1/f gives the duration of a single cycle, Hz, which is equivalent to s−1

g

Gravitational acceleration on Earth, 9.81 m s−2

k

Stiffness, i.e. the resistance to deformation, N/m

m

Mass that is inert to acceleration as well as being accelerated by gravity, kg

π

3.1415

ω

Angular frequency. ω is proportional to f, as it is given by 2πf, Hz, which is equivalent to s−1

ω0

Resonance frequency of the resonator, i.e. frequency at which mechanical energy will be accumulated, expressed as angular frequency, Hz

ωA

Angular frequency of the actuator, Hz

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  1. 1.Institute of Aerospace MedicineGerman Aerospace CenterKölnGermany
  2. 2.Institute for Biomedical Research into Human Movement and Health (IRM)Manchester Metropolitan UniversityManchesterUK

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