Filipa Alyson R, Smith Teresa R, Paterno Mark V, Ford Kevin R, Hewett Timothy E
Cincinnati Children's Hospital Medical Center, Division of Occupational and Physical Therapy, Cincinnati, Ohio, USA.
Cincinnati Children's Hospital Medical Center, Division of Occupational and Physical Therapy, Cincinnati OH, KORT Goss Ave Physical Therapy, Louisville, Kentucky, USA.
J Dance Med Sci. 2013 Dec;17(4):165-9. doi: 10.12678/1089-313x.17.4.165.
The purpose of this study was to determine if there was a predictive relationship between performance on the Star Excursion Balance Test (SEBT) and functional turnout angle (FTA) in prepubescent female dancers. Ten dance students, ages 5 to 9 years (mean: 7.3 years), were recruited for this study. The SEBT required the subject to reach in the anterior, posterior-medial, and posteriorlateral directions with her free-limb foot while standing on the reference limb. A composite reach score was determined by calculating the sum of distance reached in the three directions and normalizing to leg length. The FTA was assessed in first position by measuring the angle of bisection between the second and third metatarsals and the midpoint of the calcaneus. Linear regression was used to determine if there was a predictive relationship between performance on the SEBT and FTA in this cohort. The subjects demonstrated a mean FTA of 90.3° ± 17.7°. Composite reach on the dominant limb normalized to leg length (81.4 ± 11.1%) during the SEBT was a significant predictor of FTA (r(2) = 0.49, p = 0.02), while performance on the non-dominant limb (81.9 ± 10.8%) indicated a trend toward a predictive association (r(2) = 0.35, p = 0.07). A decreased composite reach score was predictive of decreased FTA. These measurements may serve as an important screening tool for identifying dancers at risk for lower extremity injury.
本研究的目的是确定青春期前女性舞者的星标偏移平衡测试（SEBT）表现与功能性外转角度（FTA）之间是否存在预测关系。本研究招募了10名年龄在5至9岁（平均：7.3岁）的舞蹈学生。SEBT要求受试者单脚站立在支撑腿上，用自由腿向身体前方、后内侧和后外侧方向伸展。通过计算三个方向上伸展距离的总和并将其归一化到腿长来确定综合伸展得分。通过测量第二和第三跖骨之间的平分线与跟骨中点之间的角度来评估第一位置的FTA。使用线性回归来确定该队列中SEBT表现与FTA之间是否存在预测关系。受试者的平均FTA为90.3°±17.7°。在SEBT期间，优势腿的综合伸展距离归一化到腿长（81.4±11.1%）是FTA的显著预测指标（r(2)=0.49，p=0.02），而非优势腿的表现（81.9±10.8%）显示出预测关联的趋势（r(2)=0.35，p=0.07）。综合伸展得分降低预示着FTA降低。这些测量结果可能作为识别有下肢受伤风险舞者的重要筛查工具。
