KMID : 1012020160050030155
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Physical Therapy Rehabilitation Science 2016 Volume.5 No. 3 p.155 ~ p.161
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Reliability and validity of a personal computer based muscle viewer for measuring upper trapezius and transverses abdominis muscle thickness
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Jeong Ju-Ri
Han Ju-Hee Cho Ji-Eun Lee Wan-Hee
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Abstract
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Objective: This study aimed to investigate the reliability and validity of a personal computer-based muscle viewer (PC-BMW) compared with that of a portable ultrasound (P-US) for measuring upper trapezius (UT) and transversus abdominis (TrA) muscle thickness at rest and during contraction.
Design: Observational inter-rater reliability study.
Methods: Fifty-five healthy participants (25 men, 30 women) participated in this study. PC-BMW and P-US were randomly measured at the UT and TrA muscles. Two examiners randomly obtained the images of all participants in 3 test sessions lasting 2 days. Intra-class correlation coefficients (ICCs), standard error of measurement, contraction ratio, and correlation were used to estimate reliability and validity. Pearson¡¯s correlation coefficients were used to analyze the relationship between muscle thickness measures taken from PC-BMW and P-US.
Results: The intra-rater reliability ICCs of UT and TrA muscle thickness for the PC-BMW were >0.995, indicating excellent reliability. Inter-rater reliability ICCs for the PC-BMW ranged from 0.963 to 0.987. The P-US also exhibited high reliability. A high correlation was found between the measurements of the two muscles in PC-BMW and P-US (p<0.01).
Conclusions: PC-BMW provides clear and excellent images, is pocket-sized and less expensive than a conventional ultrasound imaging system. PC-BMW can be utilized variously and has the advantage of rehabilitative ultrasound imaging. More research is needed to evaluate the utility of PC-BMW for rehabilitation.
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KEYWORD
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Muscle viewer, Reliability, Transversus abdominis, Ultrasonography, Upper trapezius
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