BACKGROUND: The MyotonPro is a widely used, safe, and non-invasive digital device for assessing muscle biomechanical and viscoelastic properties. This study aimed to determine the intra- and inter-session reliability of the MyotonPro in measuring the biomechanical and viscoelastic properties of the knee extensor and flexor muscles. METHODS: = 1.96 × √2 × SEM. Bland-Altman plots were generated to visually represent the agreement between the two sessions, complementing the ICC analysis. RESULTS: : 0.07 to 14.54). The Bland-Altman analysis confirmed near agreement for all measured properties across sessions 1 and 2 for both the RF and BF. The limits of agreement encompassed most data points, and the overall systematic mean bias was negligible, remaining close to zero. CONCLUSIONS: This study establishes the MyotonPro as a highly reliable instrument for assessing muscle properties, evidenced by excellent intra-session and inter-session consistency across all measured biomechanical and viscoelastic properties. The negligible systematic bias indicates high temporal measurement stability, supporting the potential utility of myotonometry for monitoring changes in muscle mechanical properties in longitudinal assessments.
SECER et al. (Thu,) studied this question.