The Journal of orthopaedic and sports physical therapy
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J Orthop Sports Phys Ther · Aug 2009
The effect of averaging multiple trials on measurement error during ultrasound imaging of transversus abdominis and lumbar multifidus muscles in individuals with low back pain.
Clinical measurement, reliability study. ⋯ When using RUSI to determine percent change in TrA and LM muscle thickness, intra examiner measurement precision appears to be optimized by using an average of 3 consecutive measurements.