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A Comparison Of Three Computer-Based Methods Used To Determine Emg Signal Amplitude, Doug Renshaw*, Matthew R. Bice†, Camille Cassidy‡, James A. Eldridge‡, Douglas W. Powell‡
A Comparison Of Three Computer-Based Methods Used To Determine Emg Signal Amplitude, Doug Renshaw*, Matthew R. Bice†, Camille Cassidy‡, James A. Eldridge‡, Douglas W. Powell‡
James Eldridge
Electromyography is a commonly used method to determine relative effort and neuromuscular drive to skeletal muscle. A limitation of the interpretation of EMG within the literature is the many methods used to determine the intensity of muscle activation. In the current study, ten healthy young adults performed a level walking task while EMG was recorded from the tibialis anterior, medial gastrocnemius and fibularis longus. The EMG data were rectified and smoothed using the root mean squared (RMS). Peak RMS (pRMS), mean RMS (mRMS) and integrated EMG (iEMG) were normalized to the peak value within the subject and were used to …
Neuromuscular Adaptations In Elderly Adults Are Task-Specific During Stepping And Obstacle Clearance Tasks., Matthew Bice, Nicholas J. Hanson, James A. Eldridge, Paul Reneau, Douglas W. Powell
Neuromuscular Adaptations In Elderly Adults Are Task-Specific During Stepping And Obstacle Clearance Tasks., Matthew Bice, Nicholas J. Hanson, James A. Eldridge, Paul Reneau, Douglas W. Powell
James Eldridge
Elderly adults have a diminished movement capacity due to physiological and neurological declines associated with advancing age. Previous research suggests that elderly adults use altered neuromuscular patterns to conduct activities of daily living (ADLs). Limited research has addressed these altered activation strategies in obstacle clearance, stair ascent and stair descent. The purpose of this study was to compare neuromuscular activation patterns in young and elderly adults during these tasks. Eleven young and 10 healthy elderly adults performed five downward stepping, upward stepping and obstacle clearance trials. Surface EMG was measured from the quadriceps, hamstrings, gastrocnemius and tibialis anterior muscles. A …