Figure 3

(A) On average, subjects walking with their best tested power setting had significantly lower cost of transport (COT) compared to walking with the prosthetist-chosen power setting (p < 0.001). The mean prosthetist-chosen power setting was 41.6% ± 8.7%; the mean best tested setting was 86.1% ± 13.2%. The star (★) indicates a significant difference in the magnitude of COT between the prosthetist chosen and best tested power settings. Error bars represent ±1 standard deviation in COT (vertical) and power setting (horizontal). (B) The corresponding mean net ankle work for the prosthetist-chosen and best tested conditions were 0.11 ± 0.06 J/kg and 0.24 ± 0.08 J/kg, respectively.