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Detection of the onset of gait initiation using kinematic sensors and EMG in transfemoral amputees
WENTINK EC; SCHUT VG; PRINSEN EC; RIETMAN JS; VELTINK PH
GAIT POSTURE , 2014, vol. 39, n° 1, p. 391-396 Doc n°: 167751 Localisation : Documentation IRR D.O.I. : http://dx.doi.org/DOI:10.1016/j.gaitpost.2013.08.008 Descripteurs : DF241 - MARCHE DE L'AMPUTE - ETUDES - REEDUCATION, EC16 -PROTHESE DE MEMBRE INFERIEUR In this study we determined if detection of the onset of gait initiation in transfemoral amputees can be useful for voluntary control of upper leg prostheses. From six transfemoral amputees inertial sensor data and EMG were measured at the prosthetic leg during gait initiation. First, initial movement was detected from the inertial sensor data. Subsequently it was determined whether EMG could predict initial movement before detection based on the inertial sensors with comparable consistency as the inertial sensors. From the inertial sensors the initial movement can be determined. If the prosthetic leg leads, the upper leg accelerometer data was able to detect initial movement best. If the intact leg leads the upper leg gyroscope dataperformed best. Inertial sensors at the upper leg in general showed detections at the same time or earlier than those at the lower leg. EMG can predict initial movement up to a 138 ms in advance, when the prosthetic leg leads. Langue : ANGLAIS |
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