Greenberg Eric T, Barle Matthew, Glassmann Erica, Jung Min-Kyung
Department of Physical Therapy, New York Institute of Technology, Old Westbury, NY.
College of Osteopathic Medicine, New York Institute of Technology, Old Westbury, NY.
Int J Sports Phys Ther. 2019 Apr;14(2):204-213.
Adolescence is the stage of development marked by peak rates of skeletal growth resulting in impaired dynamic postural control and increased injury risk, especially in female athletes. Reliable tests of dynamic postural control are needed to help identify athletes with balance deficits and assess changes in limb function after injury.
To estimate the interrater and test-retest (intrarater) reliability of the Y-Balance Test in a group of early adolescent females over a one-month period when administered by novice raters.
Twenty-five early adolescent females (mean age 12.7 ± 0.6 years) participated. Two physical therapy student raters, randomly selected from a pool of five, simultaneously assessed each subject's performance on the Y-Balance Test and were blinded to each other's results. Twenty-one subjects returned for a second session (mean 32.3 ± 9.6 days) and were assessed by the same two raters, blinded to previous measurements. Maximum and normalized reach distances and composite scores of the right and left limbs were collected. Intraclass correlation coefficients (ICC) were calculated for between rater and between session agreement. Measurement error and minimal detectable change values were calculated for clinical interpretation.
Interrater reliability was excellent for all reach directions and composite scores of the right limb (ICC 0.973-0.998) and left limb (ICC 0.960-0.999) except for the day 1 left anterior reach which was good (ICC 0.811). Test-retest reliability were moderate to excellent for the right limb (ICC 0.681- 0.908) and moderate to good for left limb (ICC 0.714 - 0.811). Minimal detectable change values for the right and left limbs ranged between 2.02-3.62% and 2.77-3.63%, respectively.
The Y-Balance Test is a reliable tool to assess dynamic balance in early adolescent females and may be utilized in a clinical setting to monitor function over a one-month time interval. Between rater differences were mainly attributed to disparities in subjective test requirements and not quantitative measures of reach distance.
Level 2.
青春期是骨骼生长速率达到峰值的发育阶段，这会导致动态姿势控制受损以及受伤风险增加，尤其是在女性运动员中。需要可靠的动态姿势控制测试来帮助识别存在平衡缺陷的运动员，并评估受伤后肢体功能的变化。
评估由新手评估者在一个月时间内对一组青春期早期女性进行Y平衡测试时的评估者间信度和重测（评估者内）信度。
25名青春期早期女性（平均年龄12.7±0.6岁）参与研究。从五名物理治疗专业学生评估者中随机选出两名，同时对每位受试者的Y平衡测试表现进行评估，且彼此对对方的结果不知情。21名受试者返回进行第二次测试（平均间隔32.3±9.6天），并由相同的两名评估者进行评估，评估者对之前的测量结果不知情。收集左右肢体的最大伸展距离、标准化伸展距离和综合得分。计算组内相关系数（ICC）以评估评估者间和测试期间的一致性。计算测量误差和最小可检测变化值以用于临床解释。
除第1天左侧前伸测试信度良好（ICC 0.811）外，评估者间信度在所有伸展方向以及右肢（ICC 0.973 - 0.998）和左肢（ICC 0.960 - 0.999）的综合得分方面均为优秀。右肢的重测信度为中等至优秀（ICC 0.681 - 0.908），左肢为中等至良好（ICC 0.714 - 0.811）。左右肢体的最小可检测变化值分别在2.02 - 3.62%和2.77 - 3.63%之间。
Y平衡测试是评估青春期早期女性动态平衡的可靠工具，可在临床环境中用于在一个月的时间间隔内监测功能。评估者间的差异主要归因于主观测试要求的差异，而非伸展距离的定量测量。
2级。
