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Myotonometry for the evaluation of Achilles tendon mechanical properties: a reliability and construct validity study by Alessandro Schneebeli; Deborah Falla; Ron Clijsen; Marco Barbero is a Medicine article available to read on EtoBox.

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## Objective This study evaluates the intra-rater and inter-rater reliability of the MyotonPRO and its construct validity for the assessment of Achilles tendon stiffness. ## Design Reliability and construct validity study. ## Methods 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. ## Results Intra-rater reliability was very high ICC~2,k~ 0.87–0.98. The reliability of the 0.5 kg contraction was moderate with an ICC~2,k~ of 0.59. Inter-rater reliability ranged from high to very high with an ICC~2,k~ of 0.76–0.86. The reliability of the 0.5 kg, 1 kg contraction and the standing position was moderate with an ICC~2,k~ of 0.55, 0.54 and 0.56 respectively. Inter-session reliability ranged from high to very high with

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Author

Alessandro Schneebeli; Deborah Falla; Ron Clijsen; Marco Barbero

Publisher

BMJ

Published

2020

Language

EN

Field

Medicine (Health Sciences)