“…The symptoms of FM comprise musculoskeletal pain [ 3 ], fatigue [ 4 ], sleep disorders, and mood disorders [ 4 ]. In general, medications [ 5 , 6 ], psychotherapy [ 7 ], counseling [ 8 ], cognitive behavior therapy [ 9 ], self-care instructions [ 10 , 11 ], and rehabilitation or therapeutic exercises [ 12 , 13 ] are recommended as treatments for FM patients. Underwater walking is a therapeutic exercise that has often been utilized for gait training for patients with painful diseases, such as osteoarthritis [ 14 ], rheumatoid arthritis [ 15 ], arthroplasty [ 16 ], and FM [ 17 – 20 ].…”