The purpose of this study was to investigate the effects of three foot landing positions: “toe-in”, “toe-out” and “neutral”, on biomechanical risk factors for ACL injury in males and females.
Each subject performed an initial static standing calibration trial. After which, subjects completed 3 trials each of 3 jump-landing tasks from a 30-cm box, landing on one of three different foot position templates marked with tape on the floor-mounted force plates.
Neutral foot position was defined as zero degrees rotation from a line directed anteriorly along the sagittal plane of the body.
Toe-in and toe-out landing positions were defined as 30° internal and external rotation, respectively, relative to the neutral position and using the back of the heel as the pivot reference.
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