目的 用新型MyotonPRO数字化弹性触诊仪量化评估健康青年的跟腱硬度,并进行信度研究。方法 经过培训的测试人员A、B分别用新型MyotonPRO对20例健康志愿者双侧跟腱硬度进行测量,A在5 d之后重复测量1次。计算组内相关系数(ICC)和最小检测变化值(MDC),并对右侧腿跟腱进行Bland-Altman分析。比较右侧腿与左侧腿跟腱硬度的差异性,分析跟腱硬度与体质量的相关性。结果 重测ICC左=0.884,ICC右=0.904,测试者间ICC左=0.883,ICC右=0.945。最小检测变化值为36.64 N/m。Bland-Altman分析显示,同一测试者与不同测试者间均有较好的一致性。右侧腿与左侧腿跟腱硬度无显著性差异(t<1.236, P>0.05)。双侧跟腱硬度与体质量呈正相关(r>0.477, P<0.05)。结论 新型MyotonPRO数字化弹性触诊仪量化评估健康青年跟腱硬度信度较高,双侧跟腱硬度无差异,且与体质量呈正相关。
Objective To evaluate the intra- and inter-rater reliability of MyotonPRO for Achilles tendon properties measured.Methods Twenty healthy subjects were recruited to measure Achilles tendon properties using a novel hand-held MyotonPRO device by two testers, one of the testers re-tested five days later. The reliability was assessed using intra-class correlation coefficient (ICC) and Bland-Altman analysis, and minimum detectable changes (MDC) was calculated. The Achilles tendon properties of the dominant or non-dominant leg was compared. The correlation between body mass and Achilles tendon properties was examined.Results The intra-rater reliabilities of Achilles tendon properties were ICCleft=0.884 and ICCright=0.904; the inter-rater reliabilities were ICCleft=0.883 and ICCright=0.945. The MDC was 36.64 N/m. Bland-Altman plots showed good agreement. There was no significant difference in Achilles tendon properties between dominant and non-dominant legs (t<1.236, P>0.05). The body mass positively correlated with Achilles tendon properties (r>0.477, P<0.05).Conclusion The intra- and inter-rater reliabilities of MyotonPRO were good in measuring Achilles tendon properties in healthy subjects. No significant difference was found between dominant and non-dominant legs. The body mass positively correlated with Achilles tendon properties in healthy subjects.
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