Volesky Krystof, Novak Jan, Janek Michael, Katolicky Jakub, Tufano James J, Steffl Michal, Courel-Ibáñez Javier, Vetrovsky Tomas
Faculty of Physical Education and Sport, Charles University, 162 52 Prague, Czech Republic.
Department of Rehabilitation and Sports Medicine, Second Faculty of Medicine, University Hospital in Motol, Charles University, 150 06 Prague, Czech Republic.
J Funct Morphol Kinesiol. 2025 Feb 28;10(1):83. doi: 10.3390/jfmk10010083.
: This study evaluates the test-retest reliability and inter-rater reliability of the MyotonPRO for measuring Achilles tendon stiffness at two standardized sites over various time frames and settings. : Eight healthy participants underwent assessments by three raters over six visits. Tendon stiffness was measured at proximal (mid-portion) and distal (insertional) regions of the Achilles tendon at various time frames (10-15 s, 10-15 min, 24 h, and 14 days apart). Measurements included participant repositioning and two activity stimuli (daily living and sport). Reliability was calculated using the intraclass correlation coefficient (ICC), its 95% confidence interval, coefficient of variation, standard error of measurement, and minimal detectable change. : Short-term reliability (10-15 min) was excellent, with an ICC of 0.956 (0.929-0.974). Between days reliability (24 h) was good, with an ICC of 0.889 (0.802-0.938). Between weeks reliability (2 weeks) was good with an ICC of 0.886 (0.811-0.931). Short-term reliability with the simulation of activity of daily living was good, with an ICC of 0.917 (0.875-0.945). Short-term reliability with the simulation of sport was good with an ICC of 0.933 (0.891-0.96). Between days reliability with the simulation of sport was good, with an ICC of 0.920 (0.859-0.955). : When used in a standardized position, the MyotonPRO demonstrates reliable repeated measurements of Achilles tendon stiffness. This protocol provides a foundation for clinical research and rehabilitation by clarifying expected reliability across minutes, days, and weeks, thus aiding clinicians and researchers in monitoring tendon adaptations and making evidence-based decisions.
本研究评估了MyotonPRO在不同时间框架和环境下，于两个标准化部位测量跟腱刚度的重测信度和评分者间信度。八名健康参与者在六次就诊中接受了三名评分者的评估。在跟腱的近端（中部）和远端（附着部）区域，于不同时间框架（间隔10 - 15秒、10 - 15分钟、24小时和14天）测量肌腱刚度。测量包括参与者重新定位以及两种活动刺激（日常生活和运动）。使用组内相关系数（ICC）、其95%置信区间、变异系数、测量标准误差和最小可检测变化来计算信度。短期信度（10 - 15分钟）极佳，ICC为0.956（0.929 - 0.974）。日间信度（24小时）良好，ICC为0.889（0.802 - 0.938）。两周间信度良好，ICC为0.886（0.811 - 0.931）。模拟日常生活活动时的短期信度良好，ICC为0.917（0.875 - 0.945）。模拟运动时的短期信度良好，ICC为0.933（0.891 - 0.96）。模拟运动时的日间信度良好，ICC为0.920（0.859 - 0.955）。当在标准化位置使用时，MyotonPRO对跟腱刚度的重复测量具有可靠性。本方案通过明确数分钟、数天和数周内的预期信度，为临床研究和康复提供了基础，从而帮助临床医生和研究人员监测肌腱适应性并做出基于证据的决策。
