The calf muscle excitability was evaluated by evoking the H- reflex of the soleus and lateral gastrocnemius muscles simulta- neously. To record the H-reflexes, a computer-controlled stimulator with an isolator (Nihon Kohden ss-104j, Japan) and a Neuro-MEP system (Neurosoft, Russia) were used. Bandwidth and sampling frequencies were set at 5e10 kHz and 4 kHz, respectively. To obtain these reflexes, the electromyographic activity (EMG) of the lateral gastrocnemius and soleus was recorded using Ag/AgCl surface electrodes placed 2 cm apart (Sarmadi et al., 2004). The skin was268 R. Bagheri et al. / Journal of Bodywork & Movement Therapies 22 (2018) 266e275abraded with fine sandpaper and cleaned with alcohol. An imagi- nary line connecting the mid-popliteal fossa to the central point of the medial malleolus was bisected to locate the recording electrode on the soleus (Alrowayeh and Sabbahi, 2008; Palmieri et al., 2002). In aforementioned imaginary line, from a quarter below the popliteal fossa, the recording electrode was located about 4e6 cm lateral to the midline of the leg at an angle of 45 and parallel to the lateral gastrocnemius fibers (Sarmadi et al., 2004). The ground electrode was placed between the stimulating electrode and the soleus recording electrodes (Alrowayeh et al., 2005). To ensure accurate stimulation, a roving electrode (a rectangular flat elec- trode) was utilized to find the position of the tibial nerve in the popliteal fossa. After establishing this position by evoking a response in the calf muscles, the roving electrode was fixed with a strap over the tibial nerve. The stimulus artifacts were removed using a custom made artifact-suppressing amplifier.