Association between muscle architecture and quadriceps femoris H-reflex
| Autor: | S. J. Garland, Roger M. Enoka, Gerilovsky L |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Motor Neurons
Physiology business.industry Muscles Biomechanics Action Potentials Anatomy Quadriceps femoris muscle Electrophysiology H-Reflex Inferred relationship Motor unit Cellular and Molecular Neuroscience Thigh Physiology (medical) Reflex Humans Medicine Neurology (clinical) H-reflex Muscle architecture business Muscle Contraction |
| Zdroj: | Muscle & Nerve. 17:581-592 |
| ISSN: | 0148-639X |
| DOI: | 10.1002/mus.880170604 |
| Popis: | The purpose of the present study was to establish the relationship between muscle architecture and H-reflex recordings in quadriceps femoris muscle. H-reflexes were elicited in human quadriceps femoris muscle over a broad area of skin to document the shape and amplitude of the H-potentials. This, in combination with recording monopolar and bipolar H-potentials, was performed to determine the location and method for measuring maximum-amplitude H-reflexes. The influence of neural and peripheral factors on the H-potential during passive length changes was studied by comparing the amplitude of H-potentials to motor unit action potentials. Monopolar recordings of the H-potential were found to be preferable to bipolar recordings because of the reproducibility of shape and easier distinction between the M- and H-potentials. The location for recording maximum H-potentials was in the distal one third of the quadriceps femoris muscle, over the border between vastus lateralis and rectus femoris. The inferred relationship between H-potential amplitude and reflex excitability must be made with caution in quadriceps femoris muscle because the amplitude of both the motor unit potential and H-potential change as a function of muscle length. © 1994 John Wiley & Sons, Inc. |
| Databáze: | OpenAIRE |
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