Figure 1

Setup for the fatigue-inducing exercise and measurement of MVCs. The complete setup is shown in (A) with the subject strapped into a chair with ball placement and leg straps included. The foot is positioned on a sliding foot plate (1) and foot adduction is achieved by the subject pushing their 1^st metatarsal head against the dynamometer (3). The MVCs were measured by locking the foot plate while the subject pushed isometrically against the dynamometer. A pulley system that allowed the placement of weights (2) provided adjustable resistance while the subject performed the fatiguing exercise through a 30° range of motion (B).