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J Strength Cond Res. 2014 Apr;28(4):1065-71. doi: 10.1519/JSC.0000000000000242.

Vibration training for upper body: transmission of platform vibrations through cables.

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1KU Leuven-University of Leuven, Department of Rehabilitation Science, Musculoskeletal Rehabilitation Research Center; 2KU Leuven-University of Leuven, UZ Leuven, Department of Experimental Medicine; 3KU Leuven-University of Leuven, Department of Biomedical Kinesiology, Exercise and Health Research Center; and 4Custom8 NV-Biomechanics Department, Leuven, Belgium.


The aim of the present study was to evaluate the vibration transmission from a vibration platform through Vectran cables to the upper body and its relationship to induced muscular activation. Fifteen clinically healthy participants performed 3 different arm exercises-biceps curl, triceps curl, and lateral raise. Vibration transmission to the upper body was assessed over a wide range of accelerations (from 1.90 to 5.98 g) and frequencies (from 25 to 40 Hz). To assess the vibration transmission, 7 triaxial accelerometers were attached from the hand up to the head, and the root-mean-square of acceleration signal of each site-specific body point was calculated. Muscular activity of biceps brachii, triceps brachii, deltoid, and upper trapezius was recorded. The results showed a significant attenuation of the platform accelerations transmitted through the Vectran cables to the upper body. Handle vibration ranged between 27 and 44% of the acceleration delivered by the platform depending on platform vibration parameters (acceleration/frequency). Vibration increased the muscle activity of biceps brachii, triceps brachii, deltoid, and upper trapezius muscles significantly only during biceps curl exercises. No frequency or acceleration effect was found on the size of the muscle response. The results of the present study suggest that a cable-pulley resistance system on a vibration platform channels the vibration safely from the platform to the arms and induces additional muscle activation in some arm muscles when biceps curl exercises are performed.

[Indexed for MEDLINE]

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