Reflex adaptations during treadmill walking with increased body load

Experimental Brain Research
K FouadV Dietz

Abstract

Load dependent reflex adaptations were studied in healthy subjects walking on a split-belt treadmill. Compensatory reflex responses were elicited in the right leg extensor muscles during mid-stance by a short acceleration of the right treadmill belt. Electromyographic activity (EMG) was recorded from the right medial gastrocnemius (GMR), soleus (SO) and tibialis anterior (TA) muscles of the right leg as well as from the gastrocnemius of the left unperturbed leg (GML). To study the adaptational reflex behavior, multiple measurements were taken during walking with normal (control) and increased body load and after removing the load. In most experiments the compensatory EMG response in the GMR consisted of a short inhibitory and a subsequent excitatory component. Both reflex components were larger when the body was loaded. During the course of continuous loading, divergent reflex adaptations of different degrees and directions were observed in the subjects. In one group of subjects the reflex response increased to a higher level of EMG activity. In a second group EMG activity first increased and afterwards decreased to baseline level. A subsequent removal of body loading resulted in a slow adaptation to the control reflex values i...Continue Reading

Citations

Apr 13, 2007·Experimental Brain Research·Xiaoyan Li, Alexander S Aruin
Feb 28, 2002·The European Journal of Neuroscience·V DietzC M Bastiaanse
May 25, 2010·Ergonomics·Deepti MajumdarDhurjati Majumdar
Jun 5, 2012·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Maria Knikou
Feb 29, 2008·Experimental Brain Research·V BachmannV Dietz
Jan 18, 2011·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Maria KnikouAndrew C Smith
Apr 30, 2010·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Maria Knikou
Jul 16, 2003·The European Journal of Neuroscience·Grégoire Courtine, Marco Schieppati
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Mar 6, 2015·American Journal of Physical Medicine & Rehabilitation·Larissa Coutinho de Lucena TrigueiroAna Raquel Rodrigues Lindquist
Dec 20, 2017·Journal of Motor Behavior·Yoonjin ChoiBumChul Yoon
May 19, 2018·The Journal of Experimental Biology·Tom J W BuurkeRob den Otter
Oct 3, 2002·Nature Reviews. Neuroscience·Volker Dietz
Mar 16, 2021·Journal of the Royal Society, Interface·R C RiddickL A Kelly

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