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KMID : 0357220210330040187
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Journal of Korean Society Physical Therapy
2021 Volume.33 No. 4 p.187 ~ p.192
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Intra and Inter-Rater Measurement Reliability of Tibialis Anterior Muscle (TA) Thickness using the Ultrasonography Spring Gauge Technique
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Hwang Byeong-Hun
Jang Tae-Jin
Jeon In-Cheol
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Abstract
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Purpose: The purpose of the current study was to determine the intra- and inter-rater reliability of muscle thickness measurement of the TA using ultrasonography (US) conducted at different inward pressures of approximately 0.5 kg, 1.0 kg, and no pressure control.
Methods: Twenty healthy subjects were recruited for this study. Two different examiners measured the thicknesses of the dominant TA of each subject randomly to assess the intra- and inter-rater reliability. The measurement values were analyzed using the intra-class correlation coefficient (ICC) with a 95% confidence interval, standard error of measurement, minimal detectable change, and coefficient of variance.
Results: All intra-rater reliability ICC values showed high reliability above 0.9. Inter-rater reliability ICC values showed high reliability above 0.9 with 0.5 and 1.0 kg of inward pressure. In contrast, Inter-rater reliability ICC values showed poor reliability (0.23) with no pressure control of inward pressure.
Conclusion: The findings showed that maintaining consistent inward pressure is essential for reliable results when the muscle thickness of the TA is measured by different examiners in a clinical setting.
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KEYWORD
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Inter-rater Reliability, Intra-rater Reliability, Spring Gauge, Tibialis anterior, Ultrasonography
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