Neuromuscular electrical stimulation therapy
Respiratory Neuromuscular Stimulator
Patients in the study group received the NMES intervention 30 min per day. NMES was performed using a portable machine named ResPower Respiratory Neuromuscular Stimulator (Yaguo, China). Negative electrodes were placed at the motion points of the pectoralis major fibers, rectus abdominis and bilateral quadriceps muscles. The positive electrode was located far from the first electrode, near the muscle being stimulated. It consists of a channel in which each muscle has two electrodes (Fig. 
Neuromuscular electrical stimulation therapy. (