Physical Activity and Health-Related Quality of Life in Adult Women with Chiari Pelvic Osteotomy: What Level of Physical Activity Overloads the Hip Joint?
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概要
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[Purpose] The purposes of this study were to investigate the health related quality of life (HRQOL) and physical activity, and to establish the criterion for postoperative physical activity levels that do not overload the hip joint. [Subjects] Subjects were 71 females who had osteoarthritis of the hip joint and had received Chiari pelvic osteotomy. [Method] Level of physical activity was evaluated using an activity recorder which measured the number of steps as well as the duration of activity according to exercise intensity. Patients with 40 or more points on the Harris hip score were categorized as the no-pain group, and those with 30 or less points as the pain group. HRQOL was evaluated by means of the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36). We analyzed the relationship between the physical activity level and pain in patients with unilateral coxarthrosis, and clarified the criteria of the physical activity level representing excessive stress on the hip joint by the receiver operating characteristic (ROC). [Result] The patients with bilateral osteoarthritis had lower physical functioning QOL and physical activity than the patients with unilateral osteoarthritis. The threshold value of the number of steps that aggravated hip joint pain based on the ROC was 8981 steps/day, and the sensitivity and specificity were 0.75 and 0.79, respectively. [Conclusion] We can improve HRQOL by understanding appropriate physical activity levels.
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