Study Design: Single-blind, block-randomization crossover design.
Objective: To compare the knee extensor muscle torque production elicited with 2500-Hz burst-modulated alternating current (BMAC) and with a monophasic pulsed current (MPC) at the maximum tolerated stimulation intensity.
Background: Neuromuscular electrical stimulation (NMES) is often used for strengthening the quadriceps following knee surgery.