Article Title

REFLEX RESPONSES TO LOCAL SOLEUS MUSCLE VIBRATION

Authors

Axel J. Knicker
Haitham Abdulhafiz
Kirsten Albracht

Category

Stronger

Document Type

Paper

Abstract

The aims of the present work was i. to investigate the acute effects of prolonged vibratory stimulation on short-latency stretch reflexes (SLR) of soleus muscle, ii. to assess effects of vibration on parameters of the H-reflex and M-wave stimulus-response curves. There were no changes in the EMG of SLR. During vibration H-reflex amplitudes decreased but H-reflex threshold current increased. None of the H-reflex parameters showed timedependent changes. In contrast, maximum M-wave magnitude (MMAX) decreased after 30min of sustained vibration. The analysis suggests differential effects of presynaptic inhibition on ��-motoneurons. The vibration parameters have no effect on excitability of afferent and efferent fibers. The depression of the MMAX after vibratory stimulation may be related to neuromuscular transmission failure and/or reduced sarcolemmal excitability.

Recommended Citation

Knicker, Axel J.; Abdulhafiz, Haitham; and Albracht, Kirsten (2017) "REFLEX RESPONSES TO LOCAL SOLEUS MUSCLE VIBRATION," ISBS Proceedings Archive: Vol. 35: Iss. 1, Article 196.
Available at: https://commons.nmu.edu/isbs/vol35/iss1/196