... performing the experiments, interpret-ing data and writing the paper. WZR participated in inter-preting data and writing the manuscript, RLH participated in interpreting data and writing the manuscript, ... manuscript, and MMM designed the study, supervised data collection and analysis, and participated in interpreting and writing the manuscript. All authors read and approved the final man-uscript.AcknowledgementsWe ... weremeasured with the subjects attached to the motor, butwith the motor turned off. Their ankle and elbow jointswere manually taken through maximum range (plantar and dorsi-flexion, and flexion and...