Inclusion Criteria:  physically active at least 2.5 hrs/week tenderness on iliopsoas, inguinal, hip adductors, pubic symphysis hip and/ or groin pain during motion with restriction or giving way sensation, or clicking sound in hip joint. pain lasting for 2 to 6 month and no obvious changes within 3 week recently.  Exclusion Criteria:  other symptoms in lumbar, knee or ankle joint.