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EMG activity in nonstretched muscles during a fast stretch. The activity in FDS, brachioradialis (B), biceps brachii (BB), and pectoralis major (PM) is shown for arm posture 2. Thin lines represent the raw EMG signal, thick lines represent the normalized signal EMGnormalized. The 1st panel from the top shows the superimposed profiles of rotation of and torque at the MCP joints during the stretch, respectively.
