KMID : 0357220230350060177
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Journal of Korean Society Physical Therapy 2023 Volume.35 No. 6 p.177 ~ p.184
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A Study on the Validity and Test-retest Reliability of the Measurement of the Head Tilt Angle of the Smart Phone Application ¡®KPIMT Torticollis Protractor¡¯
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Song Seong-Hyeok
Park Ji-Su Song Ki-Yeon Baek Ki-Hyun Yoo Seung-Hak Kim Ju-Sang
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Abstract
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Purpose: The purpose of this study was to compare the concurrent validity and test-retest reliability of ¡®KPIMT Torticollis Protractor¡¯, a smart phone and I-pad application for convenient range of motion measurement, and ¡®Image J¡¯, an analysis software with high reliability and validity, according to head tilt and active cervical rotation angle. This was done to determine the clinical utility of ¡®KPIMT Torticollis Protractor¡¯.
Methods: Head tilt and active cervical spine rotation angles of 40 children with congenital muscular torticollis were measured using Im- age J and KPIMT Torticollis Protractor, respectively. The level of concurrent validity and inter-rater and intra-rater reliability between the two measurement methods were analyzed.
Results: For forty participants, the concurrent validity between Image J and KPIMT Torticollis Protractor showed very high validity with ICC of ICC 0.977 (0.995-0.999), 0.994 (0.994-0.998), CVME% 0.71-0.72%, SEM% 0.31-0.34%, MDC% 0.86-0.94%. The test-retest intra- rater reliability showed very high reliability ICC 0.911 (0.911-0.966), CVME% 0.71%, SEM% 0.34-0.36%, MDC% 0.81-0.94%. The test-re- test inter-rater showed very high reliability ICC 0.936 (0.933-0.957), CVME% 0.70%, SEM% 0.34-0.35%, MDC% 0.81-0.83%.
Conclusion: The KPIMT Torticollis Protractor, a smart phone and IPD application, is a highly reliable and valid device for angle measure- ment in children with congenital myotonia and can be easily used in clinical practice.
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KEYWORD
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Congenital muscular torticollis, Cervical vertebrae, Head tilt, Mobile application, Reliability and validity, Software
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