RELIABILITY AND VALIDITY OF A DEVICE TO MEASURE MUSCLE HARDNESS

Autor:	Paul D. Andrew, Gohei Kato, Haruhiko Sato
Rok vydání:	2004
Předmět:	Orthodontics medicine.diagnostic_test business.industry Biomedical Engineering Brachioradialis Anatomy Isometric exercise Electromyography Palpation Biceps Muscle tension medicine business Reliability (statistics)
Zdroj:	Journal of Mechanics in Medicine and Biology. :213-225
ISSN:	1793-6810 0219-5194
Popis:	Although clinicians judge muscle tenseness by palpation, methods to quantify this have not become established. We examined the reliability and validity of a commercially available myotonometer to assess the biceps brachii and brachioradialis. Torques ranging from 0–72% of maximum effort were isometrically resisted in five men and five women, all healthy and 21–23 years of age. Root-mean-square of surface electromyographic response was also measured. Intraclass correlations were 0.80 or higher within sessions but decreased to 0.57 between sessions except for myotonometry of the biceps brachii. Correlation with isometric load was 0.79 or higher for both myotonometry and electromyography, but these relations were consistently curvilinear. The myotonometer is more useful for fleshy muscles like the biceps brachii than for thin muscles like the brachioradialis. Because hardness has a curvilinear relation with tension in the muscle, hardness cannot be considered strictly equivalent to tension.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8bd03596f2b39e8957b63d20390756c9 https://doi.org/10.1142/s0219519404000989 Zobrazit plný text záznamu