Fig. 5

Energy injected (positive) or dissipated (negative) by each joint during the sit-down movement, calculated between 0 and 100% sit-down movement for all subjects that did not use hands during sit-down. The energy injected or dissipated by each joint is calculated as the area under a torque-position curve for that joint. Bar heights indicate across-subject means and error bars indicate standard error (N=7 subjects). Colored dots overlaid on the bar plots indicate the single-subject means (3 trials per subject) for each prosthesis condition. The legend at the top of the figure shows which color of dot corresponds with each subject