From the School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada (SA, ZD, JMS); Department of Physical Therapy, The Stanley Steyer School of Health Professions, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Aviv, Israel (ZD); Human Mobility Research Centre, Syl & Molly Apps Medical Research Centre, Kingston General Hospital, Kingston, Ontario, Canada (SA, DDB, EDD, JMS); and Division of Orthopaedic Surgery, School of Medicine, Queen's University & Kingston General Hospital, Kingston, Ontario, Canada (DDB).
Am J Phys Med Rehabil. 2014 Feb;93(2):169-81. doi: 10.1097/PHM.0000000000000041.
The aim of this study was to assess the performance of prediction rules meant for declaration of efforts as being maximal or not during isokinetic strength testing in a cohort that underwent anterior cruciate ligament reconstruction.
Thirty-six individuals performed four sets of six reciprocal concentric knee extension/flexion repetitions at a testing speed of 60 degrees per second through a 60-degree range of motion. The sets consisted of a maximal voluntary effort, two nonmaximal sincere efforts at 50% and 75% of self-perceived maximum, and a set attempting to feign or exaggerate thigh muscle strength deficiencies. Strength curve derived set internal consistency measures, namely, cross-correlation and percent root mean square difference scores, were inputted into the prediction rules, whose performance is reported as specificity and sensitivity percentages.
Dependent on the prediction rule used and when expressed on an individual participant basis, the corresponding specificity and sensitivity values ranged from 66.6% to 97.2% and 97.2% to 94.4%, respectively.
Using the prediction rules presented in this investigation, clinicians may be able to ascertain maximal effort production during isokinetic testing in those who have undergone surgical reconstruction of their anterior cruciate ligament.
本研究旨在评估预测规则在评估前交叉韧带重建患者等速力量测试中努力程度是否达到最大的表现。
36 名参与者以 60 度/秒的测试速度进行了四组 6 次往复向心膝屈伸重复，运动范围为 60 度。每组包括最大自主努力、两个非最大自主努力（分别为 50%和 75%的自我感知最大值）和一组试图假装或夸大大腿肌肉力量缺陷的努力。强度曲线衍生的组内一致性测量值，即互相关和均方根差异分数，被输入到预测规则中，其性能以特异性和敏感性百分比报告。
根据使用的预测规则以及在个体参与者基础上的表达，相应的特异性和敏感性值分别在 66.6%至 97.2%和 97.2%至 94.4%之间。
使用本研究中提出的预测规则，临床医生可以确定在前交叉韧带重建术后患者的等速测试中是否达到最大努力程度。
