Intra‐rater Reliability of B‐Mode Ultrasound Imaging of the Abdominal Muscles in Healthy Adolescents During the Active Straight Leg Raise Test

Abstract

USI measurements of the thickness of the EO, IO, and TrA muscles at rest and during the ASLR test in healthy adolescents between 13 and 16 years of age are reliable. Because of an increase in the precision of measurements, we recommend using the mean of 3 consecutive measurements of the EO, IO, and TrA muscles in adolescents to ensure a good reliability level. Based on 3 consecutive measurements, good reliability for the percentage change in the TrA thickness was achieved.