Voluntary activation of the ankle plantar flexors following whole-body vibration.

European Journal of Applied Physiology
Michael J PellegriniMary P Galea

Abstract

This study investigated the effect of whole-body vibration (WBV) on the voluntary activation of the ankle plantar flexors. Twelve healthy young adults were randomly exposed to two treatments on separate occasions. The first (non-WBV) involved stretching of the plantar flexors at end range of dorsiflexion for five 1-min bouts. The second involved the same stretch with WBV (26 Hz) for five 1-min bouts. Attempted maximal voluntary contractions (AMVCs) of the plantar flexors were performed on an isokinetic dynamometer (30 degrees s(-1)) before and after each treatment. A twitch interpolation technique was used to investigate voluntary activation. Post-treatment data were normalised against pre-treatment data. Subjects were classified as maximally (n = 6) or sub-maximally (n = 6) activated using the pre-treatment twitch interpolation data. The effects of WBV were assessed by repeated measure (RM) MANOVA. After WBV, the group of subjects classified as sub-maximally activated increased peak voluntary torque and rate of voluntary torque production (P < 0.05), whereas angular displacement to peak torque reduced (P < 0.05); i.e. peak torque was produced at a longer muscle length. No significant non-WBV treatment effects were found for th...Continue Reading

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Citations

Dec 29, 2015·European Journal of Applied Physiology·F RiederO R Seynnes
Aug 5, 2011·Scandinavian Journal of Medicine & Science in Sports·R LovellK Small
Jul 16, 2015·Scandinavian Journal of Medicine & Science in Sports·F RiederO R Seynnes
May 15, 2015·Journal of Athletic Training·Kenneth E GamesAlan E Wilson
Jul 3, 2016·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Nicole C DabbsJohn C Garner
Jan 14, 2012·Journal of Strength and Conditioning Research·Bent R RønnestadGøran Paulsen
Dec 20, 2012·Journal of Strength and Conditioning Research·Raphael F ZorySerresse Olivier
Nov 24, 2011·Scandinavian Journal of Medicine & Science in Sports·K E Games, J M Sefton

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