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Changes in the passive range of motion of the hip joint in the intervention group and control group from T1 to T2 on average. (A): hip joint on sagittal plane; (B): hip joint on frontal plane. Green area: positive delta results from T1 to T2; red area: negative delta results from T1 to T2; IR: internal rotation; ER: external rotation; T1: measurement pre-intervention; T2: measurement post-intervention; n = 25. Source: authors’ illustration.
