TY - JOUR
T1 - Experimentally Derived Kinetic Model for Sensor-Based Gait Monitoring
AU - Ketema, Yohannes
AU - Gebre Egziabher, Demoz
PY - 2016/1/1
Y1 - 2016/1/1
N2 - A method for estimating gait parameters (shank, thigh, and stance leg angles) from a single, in situ, scalar acceleration measurement is presented. A method for minimizing the impact of errors due to unpredictable variations in muscle actuation and acceleration measurement biases is developed. This is done by determining the most probable gait progression by minimization of a cost function that reflects the size of errors in the gait parameters. In addition, a model for gait patterns that takes into account their variations due to walking speed is introduced and used. The approach is tested on data collected from subjects in a gait study. The approach can estimate limb angles with errors less than 6 deg (one standard deviation) and, thus, is suitable for many envisioned gait monitoring applications in nonlaboratory settings.
AB - A method for estimating gait parameters (shank, thigh, and stance leg angles) from a single, in situ, scalar acceleration measurement is presented. A method for minimizing the impact of errors due to unpredictable variations in muscle actuation and acceleration measurement biases is developed. This is done by determining the most probable gait progression by minimization of a cost function that reflects the size of errors in the gait parameters. In addition, a model for gait patterns that takes into account their variations due to walking speed is introduced and used. The approach is tested on data collected from subjects in a gait study. The approach can estimate limb angles with errors less than 6 deg (one standard deviation) and, thus, is suitable for many envisioned gait monitoring applications in nonlaboratory settings.
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U2 - 10.1115/1.4032047
DO - 10.1115/1.4032047
M3 - Article
C2 - 26593150
AN - SCOPUS:84949514483
SN - 0148-0731
VL - 138
JO - Journal of Biomechanical Engineering
JF - Journal of Biomechanical Engineering
IS - 1
M1 - 011006
ER -