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EMG and ultrasound-based experimental data collected in this study. Plots show the time-varying normalized muscle activation with raw EMG recordings, muscle-tendon unit (MTU) length, tendon length, belly length, fascicle length, pennation angle, and muscle thickness for the medial gastrocnemius (MG) over one complete crank cycle. Data are shown for one representative subject pedaling at 80 rpm at 44 N m averaged over 10 pedal cycles.
