A. Kinematic Gait Data Acquisition
The kinematic gait data of 24 healthy young and 24 healthy
elderly subjects were recorded using a 3D-Optotrak® (NDI
Corp. Canada). Before the gait data collection, infrared light
emitting diodes (IREDs) markers were attached to lower limb
joints.Gait recordings were performed during comfortable
walking on a 10m laboratory walkway, and the sample