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. 2016:2016:8794363.
doi: 10.1155/2016/8794363. Epub 2016 Jun 13.

The Effect of Mechanical Vibration Stimulation of Perception Subthreshold on the Muscle Force and Muscle Reaction Time of Lower Leg

Huigyun Kim  1 , Kiyoung Kwak  1 , Dongwook Kim  2
Affiliations

The Effect of Mechanical Vibration Stimulation of Perception Subthreshold on the Muscle Force and Muscle Reaction Time of Lower Leg

Huigyun Kim et al. Appl Bionics Biomech. 2016.

Abstract

The objective of this study is to investigate the effect of mechanical vibration stimulation on the muscle force and muscle reaction time of lower leg according to perception threshold and vibration frequency. A vibration stimulation with perception threshold intensity was applied on the Achilles tendon and tibialis anterior tendon. EMG measurement and analysis system were used to analyze the change of muscle force and muscle reaction time according to perception threshold and vibration frequency. A root-mean-square (RMS) value was extracted using analysis software and Maximum Voluntary Contraction (MVC) and Premotor Time (PMT) were analyzed. The measurement results showed that perception threshold was different from application sites of vibration frequency. Also, the muscle force and muscle reaction time showed difference according to the presence of vibration, frequency, and intensity. This result means that the vibration stimulation causes the change on the muscle force and muscle reaction time and affects the muscles of lower leg by the characteristics of vibration stimulation.

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Figures

Figure 1
Figure 1
PMT extraction example.
Figure 2
Figure 2
The increase rate of muscle force by the vibration frequency applied on the Achilles tendon and tibialis anterior tendon [%] (∗p < 0.05. 180 Hz versus 190 Hz). (a) Achilles tendon. (b) Tibialis anterior tendon.
Figure 3
Figure 3
The muscle reaction time by the vibration stimulation applied on the Achilles tendon and tibialis anterior tendon according to vibration frequency [Sec] (∗p < 0.05. nonstimulation versus other frequencies, ∗∗p < 0.05. 180 Hz versus other frequencies). (a) Achilles tendon. (b) Tibialis anterior tendon.
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