gait analysis machine learning 12 IMU 9 inertial sensor 9 kinematics 9 rehabilitation 9 wearable sensors 9 Technology: general issues 8 accelerometer 8 gait 8 inertial sensors 8 motion capture 8 deep learning 7 reliability 7 stroke 7 aging 6 cerebral palsy 6 convolutional neural network 6 feature extraction 6 inertial measurement units 6 neural networks 6 older adults 6 physical activity 6 validity 6 History of engineering & technology 5 Parkinson's disease 5 accelerometers 5 accelerometry 5 artificial neural network 5 biometrics 5