Interrater and Intrarater Reliability of Transverse Abdominal and Lumbar Multifidus Muscle Thickness in Subjects With and Without Low Back Pain

Abstract

Both experienced and trained novice raters provided reliable measurements of TrA and LM thickness in participants with LBP and healthy participants, during rest and contraction. One-time measurements were similar to averaged measurements. Small absolute errors were observed. Public trial registry: Australian New Zealand Clinical Trials Registry ACTRN12613001077752.