Peak isometric torque
SCES
This was evaluated using a Biodex isokinetic dynamometer (Shirely, NY). Participants were seated with both the trunk-thigh angle and the knee-thigh angle at 90°. After transferring using a ceiling lift, each participant was securely strapped to the test chair by a crossover shoulder harnesses and a belt across the hip joint. The axis of the dynamometer was aligned to the anatomical knee axis and the lever arm was attached 2-3 cm above the lateral malleolus. Isometric peak torque was measured after implantation, with SCES on and SCES off to allow comparison between the two conditions. Each participant was initially asked to kick his leg as strong as possible to measure the torque generated at the knee joint when the SCES is off and then after 2 minutes resting interval with SCES on. Torque data were collected at a 1000 Hz sampling rate and analyzed using LabChart 8.1.21 (Windows)- ADInstruments.