Outcomes were Visual Analog Scale ( VAS ) for pain , Heart Rate Variability ( HRV ) analysis , treadmill test , the sit and reach test ( Wells and Dillon 's Bench ) , maximal repetitions test and handgrip dynamometry ; and quality of life by the Fibromyalgia Impact Questionnaire ( FIQ ) , the Beck and Idate Trait-State Inventory ( IDATE ) , a short-form health survey ( SF-@ ) .