Ugalde Viviane, Brockman Chuck, Bailowitz Zach, Pollard Christine D
Orthopedic and Neurosurgical Center of the Cascades, PM&R Division, The Center Foundation, Bend, OR(∗).
Therapeutic Associates Physical Therapy, Bend, OR(†).
PM R. 2015 Mar;7(3):229-35; quiz 235. doi: 10.1016/j.pmrj.2014.08.361. Epub 2014 Aug 8.
Lower extremity injuries are common in athletes. Valid tests to assess for risk of injury that are easily performed during a preparticipation sports physical examination are lacking. Two-dimensional (2D) analysis of the drop-jump test can identify athletes at risk, but it is too expensive and cumbersome to use in this setting.
To identify if those who perform a "positive"(abnormal postures) single leg squat (SLS) test also exhibit greater "dynamic valgus" on the 2D drop-jump test. Our secondary purpose was to assess whether group differences in gender, age, or body mass index are evident between those who exhibit a positive SLS test result versus a negative SLS test result. Also, we wanted to determine any gender differences with the 2D drop-jump test.
A cross-sectional study.
Private practice, preparticipation sports physical examinations.
A total of 142 middle school and high school athletes.
Participants performed a SLS test and a drop-jump test during their preparticipation sports physical examination. Individuals were partitioned into groups based on the outcome of their SLS test (positive SLS group versus negative SLS group). Independent sample t-tests were used to evaluate SLS group differences in the drop-jump test, age, and body mass index, and the χ(2) test was used to evaluate SLS group differences in gender (P ≤ .05).
The SLS test and drop-jump test.
Seventy-three of the 142 athletes (51%) had a positive SLS test result, whereas 69 athletes (49%) had a negative SLS test result. Individuals in the positive SLS group had a significantly lower knee-hip ratio), indicative of greater dynamic knee valgus, than did those in the negative SLS group (P = .02). Individual characteristics between SLS groups including gender, age, and body mass index were similar.
The SLS test is a reasonable tool to use in preparticipation sports physical examinations to assess for dynamic knee valgus and the potential risk of lower extremity injury.
下肢损伤在运动员中很常见。目前缺乏在参与运动前体格检查时能轻松进行的、用于评估受伤风险的有效测试。纵跳测试的二维（2D）分析可以识别有受伤风险的运动员，但在这种情况下使用成本太高且操作繁琐。
确定进行“阳性”（异常姿势）单腿深蹲（SLS）测试的人在二维纵跳测试中是否也表现出更大的“动态外翻”。我们的次要目的是评估在SLS测试结果为阳性与阴性的人群之间，性别、年龄或体重指数是否存在明显的组间差异。此外，我们想确定二维纵跳测试中的任何性别差异。
横断面研究。
私人诊所，运动前体格检查。
总共142名初中和高中运动员。
参与者在运动前体格检查期间进行了SLS测试和纵跳测试。根据SLS测试结果（阳性SLS组与阴性SLS组）将个体分组。使用独立样本t检验评估SLS组在纵跳测试、年龄和体重指数方面的差异，使用χ²检验评估SLS组在性别方面的差异（P≤0.05）。
SLS测试和纵跳测试。
142名运动员中有73名（51%）SLS测试结果为阳性，而69名运动员（49%）SLS测试结果为阴性。阳性SLS组个体的膝髋比显著低于阴性SLS组，表明动态膝外翻更大（P = 0.02）。SLS组之间的个体特征，包括性别、年龄和体重指数相似。
SLS测试是一种合理的工具，可用于运动前体格检查，以评估动态膝外翻和下肢受伤的潜在风险。
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