SUMMARY
Background. The aim of this study was to assess to what extent changing the measure- ment point affected the results of myometric parameters describing muscle mechani- cal properties assessed by a MyotonPRO® device in three skeletal muscles: the biceps brachii (BB), tibialis anterior (TA) and rectus femoris (RF). We hypothesised that muscle mechanical properties would change differently as the myometry probe was moved towards the proximal or distal part of a muscle.
Methods. Sixteen untrained, healthy, young male students participated in the study. Myometric frequency, stiffness, decrement, relaxation and creep parameters were measured in the BB, RF and TA of the right and left sides of the body at five measure- ment points: the central point of a muscle, and points shifted by 10% and 20% of the muscle length proximally and distally from the central point. A multivariate: 5 (measurement points) × 3 (muscle) analysis of variance (MANOVA) for each of the parameters separately was used for the main analysis.
Results. MANOVA showed that measurement point (the location), muscle and inter- action between measurement point and muscle have an impact on all measured param- eters (P < 0.05) except interaction between measurement point and muscle in relax- ation parameter (P > 0.05).
Differences in myometric values were shown for both measurement points located distant from each other, as well as for those located adjacent to each other.
Conclusions Our results emphasized the variation in muscle properties along the long axis of chosen skeletal muscles expressed by myometry outcomes.
Impact of the Location of Myometric Measurement Points on Skeletal Muscle Mechanical Properties Outcomes
J. Mencel, J. Marusiak, A. Jaskólska, A. Jaskólski, K. Kisiel-Sajewicz
Original Article, 525-535
Keywords: Creep, Elasticity, muscle-tendon unit, myoton, stiffness, tone,
Table of Content: Vol. 11 (No.3) 2021 July/September
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