title: Modulation of Renshaw cell activity from supine to standing.
abstract: The purpose of this study was to quantify changes in Renshaw cell activity from supine to standing and determine the relationship between these changes and changes in the soleus H-reflex. Ten young subjects were tested using an indirect measure of Renshaw cell activity. Twelve test and twelve conditioned H-reflexes were collected during both supine and standing conditions. All subjects significantly increased Renshaw cell activity from supine to standing. Furthermore, there was a significant correlation between the changes in H-reflex and Renshaw cell activity. As the co-contraction requirement of the system increased, Renshaw cell activity also increased.
authors.affiliation: Motor Control Laboratory, Department of Exercise & Sport Science, University of North Carolina, Chapel Hill, North Carolina 27599, USA. rgm@unc.edu
authors.forename: Richard G
authors.initials: RG
authors.lastname: Mynark
mesh_terms: D000328:Adult; D004558:Electric Stimulation / Q000379:methods; D004576:Electromyography / Q000379:methods; D005260:Female; D006181:H-Reflex / Q000502:physiology*; D006801:Humans; D007395:Interneurons / Q000187:drug effects / Q000502:physiology*; D008297:Male; D009119:Muscle Contraction / Q000502:physiology / Q000528:radiation effects; D018482:Muscle, Skeletal / Q000502:physiology / Q000528:radiation effects; D009433:Neural Inhibition / Q000502:physiology* / Q000528:radiation effects; D011187:Posture / Q000502:physiology*; D012044:Regression Analysis