Myotonometry for the evaluation of Achilles tendon mechanical properties: a reliability and construct validity study

BMJ Open Sport & Exercise Medicine
Alessandro SchneebeliMarco Barbero

Abstract

This study evaluates the intra-rater and inter-rater reliability of the MyotonPRO and its construct validity for the assessment of Achilles tendon stiffness. Reliability and construct validity study. Forty healthy participants were assessed using the MyotonPRO by two raters on two different occasions. Tendon was evaluated in three different positions (relaxed, 0° plantarflexion and standing) and during different isometric contractions (range 0-3 kg). Reliability was calculated using intraclass correlation coefficient (ICC and 95% CI) standard error of measurement and minimal detectable change. Construct validity was evaluated between the different positions and the different contraction intensities using Friedman test. Intra-rater reliability was very high ICC2,k 0.87-0.98. The reliability of the 0.5 kg contraction was moderate with an ICC2,k of 0.59. Inter-rater reliability ranged from high to very high with an ICC2,k of 0.76-0.86. The reliability of the 0.5 kg, 1 kg contraction and the standing position was moderate with an ICC2,k of 0.55, 0.54 and 0.56 respectively. Inter-session reliability ranged from high to very high with an ICC2,k of 0.70-0.89. The reliability of the 0.5 kg contraction was moderate with an ICC2,k of 0.5...Continue Reading

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Software Mentioned

MyotonPRO
Statistical Package for the Social Sciences ( SPSS
BrainBLOX

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