 We will collect electromyography EMG, joint angle, footswitch data at 1000 Hz using a 24-channel hard-wired analog to digital board a custom written Labview software acquisition program during stepping using BWST manual assistance. EMG data will be sampled from 0.1 to 1 kHz AC coupled into a differential amplifier. Following standard skin preparation, bipolar surface EMG electrodes with a fixed distance between the electrodes will be placed on the soleus, medial gastrocnemius, tibialis anterior, medial hamstrings, adductor, vastus lateralis, rectus femoris bilaterally. Limb kinematics will be digitally acquired a passive marker high speed motion capture system. Individual limb loads will be measured with shoe-insole pressure sensors. Data will be processed synchronized using Labview software customized by our laboratory. EMG data will be full wave rectified filtered using a 4th order bandpass Butterworth filter 40 Hz - 500 Hz. Mean EMG represents the relative number frequencies of the motor units recruited per burst. Integrated EMG assesses the total EMG activity generated per step. EMG mean integrated amplitudes from each muscle will be compared before and after LT. Co-activation values of flexors and extensors will be calculated. The degree of coordination in the stepping-related oscillations of lower limb segments will be assessed through principal component analysis. Quantitative measurements and statistical testing have been described in detail in previous publications listed above. Heart rate will be monitored during training sessions and experiments. 