The patients in the MFR group reported a @ % reduction in their pain and @ % reduction in functional disability as shown in the MPQ and QBPDS scores in week @ , whereas patients in the control group reported a @ % and @ % reduction in their MPQ and QBPDS scores in week @ , which persisted as a @ % reduction of pain and @ % reduction of functional disability in the follow-up at week @ in the MFR group compared to the baseline .