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Biomedical Engineering and Bioengineering Commons™
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Full-Text Articles in Biomedical Engineering and Bioengineering
Soleus H-Reflex Excitability Changes In Response To Sinusoidal Hip Stretches In The Injured Human Spinal Cord, Maria Knikou, Brian D. Schmit, Debjani Chaudhuri, Elizabeth Kay, William Zev Rymer
Soleus H-Reflex Excitability Changes In Response To Sinusoidal Hip Stretches In The Injured Human Spinal Cord, Maria Knikou, Brian D. Schmit, Debjani Chaudhuri, Elizabeth Kay, William Zev Rymer
Biomedical Engineering Faculty Research and Publications
Imposed static hip stretches substantially modulate the soleus H-reflex in people with an intact or injured spinal cord while stretch of the hip flexors affect the walking pattern in lower vertebrates and humans. The aim of this study was to assess the effects of dynamic hip stretches on the soleus H-reflex in supine spinal cord injured (SCI) subjects. Sinusoidal movements were imposed on the right hip joint at 0.2 Hz by a Biodex system. H-reflexes from the soleus muscle were recorded as the leg moved in flexion or extension. Stimuli were sent only once in every hip movement cycle that …
Parallel Facilitatory Reflex Pathways From The Foot And Hip To Flexors And Extensors In The Injured Human Spinal Cord, Maria Knikou, Elizabeth Kay, Brian D. Schmit
Parallel Facilitatory Reflex Pathways From The Foot And Hip To Flexors And Extensors In The Injured Human Spinal Cord, Maria Knikou, Elizabeth Kay, Brian D. Schmit
Biomedical Engineering Faculty Research and Publications
Spinal integration of sensory signals associated with hip position, muscle loading, and cutaneous sensation of the foot contributes to movement regulation. The exact interactive effects of these sensory signals under controlled dynamic conditions are unknown. The purpose of the present study was to establish the effects of combined plantar cutaneous afferent excitation and hip movement on the Hoffmann (H) and flexion reflexes in people with a spinal cord injury (SCI). The flexion and H-reflexes were elicited through stimulation of the right sural (at non-nociceptive levels) and posterior tibial nerves respectively. Reflex responses were recorded from the ipsilateral tibialis anterior (TA) …