Test-retest Reliability of a Novel Lateral Trunk Flexion Test in

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  • Nagino Koji
    Department of rehabilitation sciences, Faculty of Allied Health Sciences, Kansai University of Welfare Sciences
  • Kai Satoru
    Department of rehabilitation sciences, Faculty of Allied Health Sciences, Kansai University of Welfare Sciences

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<p>ABSTRACT <tt>Background/Aim.</tt><tt> Trunk lateral flexion is frequently assessed with many</tt><tt> </tt><tt>measurement tools at clinical setting. The aim of this study was to determine the test-retest reliability of a novel lateral trunk flexion test (LTFT). </tt><tt>Methods</tt><tt>. Twelve young men and two raters participated in this study. The LTFT was measured by one rater three times on each side of each participant. Two weeks later, a different rater measured the LTFT in each participant a second time. Test-retest reliability was analyzed using the intra-class correlation coefficient (ICC) and coefficient of variation (CV). The minimum detectable change (MDC) was also calculated. </tt><tt>Results.</tt><tt> Intra-rater reliability was excellent for both raters: ICC (1,3): right side, 0.90 and 0.94; left side, 0.94 and 0.91. The CVs of the first and second rater were 9.2% and 6.0% for the right side, and 5.8% and 6.9% for the left side. The interrater reliability, which verified the coincidence of the two raters, was also excellent: ICC (2,3) for the right side 0.96 and 0.98 for the left side. The MDC was 1.83 cm for the right side and 1.45 cm for the left side. </tt><tt>Conclusions. </tt><tt>The LTFT showed excellent test-retest reliability. In the future, it will be necessary to examine the validity of LTFT and to verify the reliability and validity by conducting it on patients with diseases.</tt><tt> </tt></p>

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