Zunko Helena, Vauhnik Renata
Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia, Ljubljana, Slovenia.
Faculty of Health Sciences, University of Ljubljana, Ljubljana, Slovenia, Ljubljana, Slovenia.
PeerJ. 2021 Sep 22;9:e11977. doi: 10.7717/peerj.11977. eCollection 2021.
Weight-bearing ankle dorsiflexion range of motion measurement (weight-bearing lunge test) is gaining in popularity because it mimics lower extremity function in daily physical activities. The purpose of the study is to assess the intra-rater and the inter-rater reliability of the weight-bearing ankle dorsiflexion range of motion measurement with a flexed knee using a smartphone application Spirit Level Plus installed on an Android smartphone.
Thirty-two young, healthy subjects participated in the study and were measured in four sessions by two examiners. One measurement was taken on each ankle in every session. Eight measurements were taken from each participant. A total of 256 were taken from all the participants. The measurements for the individual subject were repeated no sooner than 24 hours after the first session. In order to assess the reliability, intraclass correlation coefficients (ICC), standard error measurements (SEM) and minimal detectable change (MDC) at the 95% confidence interval were calculated.
Statistical data analysis revealed moderate intra-rater reliability for the right ankle (ICC = 0.72, 95% CI [0.49-0.85]) and good intra-rater reliability for the left ankle (ICC = 0.82, 95% CI [0.66-0.91]). Inter-rater reliability is moderate for the right (ICC = 0.73, 95% CI [0.52-0.86]) and the left ankle (ICC = 0.65, 95% CI [0.39-0.81]).
The observed method is moderately reliable and appropriate when the main objective is to assess ankle dorsiflexion mobility in weight-bearing when weight-bearing is not contraindicated. The concurrent validity of the Spirit Level Plus application is excellent.
负重时踝关节背屈活动度测量（负重前弓步试验）越来越受欢迎，因为它模拟了日常体育活动中的下肢功能。本研究的目的是使用安装在安卓智能手机上的智能手机应用程序“水平仪升级版（Spirit Level Plus）”，评估屈膝时负重踝关节背屈活动度测量的评分者内信度和评分者间信度。
32名年轻健康受试者参与了本研究，由两名检查者分四个阶段进行测量。每个阶段对每个踝关节进行一次测量。每位参与者共进行8次测量。所有参与者共进行了256次测量。个体受试者的测量在第一阶段后至少24小时后重复进行。为了评估信度，计算了95%置信区间的组内相关系数（ICC）、标准误差测量值（SEM）和最小可检测变化（MDC）。
统计数据分析显示，右侧踝关节评分者内信度中等（ICC = 0.72，95%CI [0.49 - 0.85]），左侧踝关节评分者内信度良好（ICC = 0.82，95%CI [0.66 - 0.91]）。右侧（ICC = 0.73，95%CI [0.52 - 0.86]）和左侧踝关节（ICC = 0.65，95%CI [0.39 - 0.81]）的评分者间信度中等。
当主要目的是评估在无负重禁忌的负重情况下踝关节背屈活动度时，所观察到的方法具有中等信度且适用。“水平仪升级版”应用程序的同时效度极佳。
