Copyright © 2013 Lippincott Williams & Wilkins. Unauthorized commercial reproduction of this slide is prohibited Supplemental PowerPoint Slides Assessments of lumbar flexion range of motion - intertester reliability and concurrent validity of two commonly used clinical tests Hilde Stendal Robinson, PhD, RPT, Anne Marit Mengshoel, PhD, RPT Department of Health Sciences, Institute of Health and Society, University of Oslo, P.O. Box 1089, Blindern, N-0317 Oslo, Norway

Purpose of the study ● To investigate the relative and absolute intertester reliability of the fingertip-to-floor distance (FFD) test and the modified Schober (mSchober) test. ● This was done in a heterogeneous sample of patients (n=98) with specific and non-specific LBP, pelvic girdle pain and patients without pain. ● The secondary purpose was to investigate the correlation between the two tests as a measure of concurrent validity.

Results ● Excellent relative intertester reliabilitet, ICC3,1 (95% CI) was 0.93 ( ) and 0.77 ( ) for the FFD test and the mSchober test respectively. ● Absolute reliability, measured by smallest detectable change (SDC), was 9.8 cm and 1.8 cm for the FFD test and the mSchober test, respectively. ● A medium negative correlation was found between the two tests (r=-0.47, p<0.001).

Conclusion ● Changes of 9.8 and 1.8 cm, for the FFD test and the mSchober respectively, are needed to detect a true change. ● The results indicates that both tests should be used together in the clinics; ● To evaluate the patient’s lumbar flexion ROM (mSchober test) ● To evaluate the functional ability to bend forward (FFD test)