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

Koji Nagino, Satoru Kai
2020 Journal of allied health sciences  
Background/Aim. Trunk lateral flexion is frequently assessed with many 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). Methods. 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
more » ... lity was analyzed using the intra-class correlation coefficient (ICC) and coefficient of variation (CV). The minimum detectable change (MDC) was also calculated. Results. 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. Conclusions. 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.
doi:10.15563/jalliedhealthsci.11.74 fatcat:ificixomjrexlgirxlhh662omy