Three-Month Follow-Up
Three months after the end of the last biofeedback session, a follow-up was scheduled for psychophysiological re-evaluation. During follow-up, the participants assigned to the biofeedback group, who had already attended their treatment sessions, were monitored with EMG, respiratory rate, skin conductance, peripheral temperature, heart rate, and lf/hf parameters, during DHI administration and with an initial and final baseline of two minutes. Three-month follow-up was also performed for the control group. In this case, only the DHI was re-administered.