3D gait analysis
Kinematic and kinetic gait variables were recorded on a 10 m runway with 8 cameras (Vicon Oxford Metrics, recording frequency 100 Hz) and 2 force platforms (AMTI OR6-7, Advanced Mechanical Technology Inc., Watertown, MA, recording frequency 1000). A set of 16 markers was fixed to bony landmarks according to the Helen Hays model [Gait speed was fixed at the individual’s speed measured during the 6MWT in the noAFO condition (mean 0.95 m/s, SD 0.25) so that changes in gait speed between conditions would not confound kinematic and kinetic results. A running light-emitting diode by the side of the walkway set to the participant’s gait speed was used to guide them.Trials in which participants placed the evaluated foot correctly on the force platforms were considered and were included in the analysis if at least 4 gait cycles with complete kinematic and kinetic data were available for the participant. Standardised kinematic [The eversion moment of the ankle joint was considered relevant to indicate ankle stability.