Aftereffects of mechanical vibration and muscle contraction on limb position-sense

Muscle & Nerve
Yohei IshiharaIkuo Homma

Abstract

Mechanical vibration (MV) of a muscle causes position-sense errors during and after application. Isometric muscle contraction at a shorter (hold-short conditioning) or longer (hold-long conditioning) length causes limb position-sense errors after the muscle returns to its intermediate length by means of intrafusal muscle thixotropy. However, it is unclear whether MV enhances these thixotropic position-sense errors. We studied the after-effects of MV on position-sense errors induced by hold-short and hold-long conditioning in the biceps of 12 healthy men. After hold-short conditioning, subjects perceived that the conditioned forearm was placed in a more extended position than occurred in reality; after hold-long conditioning, a more flexed position was perceived. Use of MV with hold-short or hold-long conditioning enhanced both errors, which were most obvious at 100 HZ. These results suggest that MV and muscle conditioning work together efficiently to develop intrafusal muscle thixotropy. MV combined with hold-long conditioning may alleviate thixotropically increased muscle stiffness, such as in spastic hypertonia.

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Citations

Sep 27, 2008·Experimental Brain Research·Takayuki NakajimaIkuo Homma
Dec 14, 2005·European Journal of Applied Physiology·Tomohiro YasudaIkuo Homma
Apr 2, 2011·European Journal of Applied Physiology·Ross D PollockDi J Newham
Oct 1, 2013·Journal of Strength and Conditioning Research·William A SandsMichael H Stone
Mar 29, 2014·Experimental Brain Research·Naoyuki HakutaIkuo Homma
Mar 28, 2007·Muscle & Nerve·Chikara SekiharaIkuo Homma
Mar 31, 2015·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Vito Enrico PettorossiMarco Schieppati
Sep 1, 2015·PloS One·Kazuyoshi KigawaNaoyuki Hakuta
Aug 10, 2016·Perceptual and Motor Skills·Barbara M DoucetWaneen Spirduso

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