Reliability of ultrasonographic measurement of muscle architecture of the gastrocnemius medialis and gastrocnemius lateralis - Datasets

<p>Intra-rater reliability of the digitisation method involved one blinded investigator (Investigator A) repeating digitisation on 100 randomly sampled images on two occasions. <a>Three blinded investigators (A, B and C) analysed all 2145 images to provide comparisons for inter-rater reliability of the digitisation method. </a>The images were divided into images of GM (1081 images) or GL (1064 images), and reliability analyses were performed for these groups separately. For test-retest reliability of the ultrasound image acquisition and digitisation method combined, results were re-identified for each of the 87 participants and separated into image number (1, 2 or 3) and test session (1 or 2). Intra-rater between-image reliability was measured by comparing Investigator A’s results from session 1 image 1, to session 1 image 3. <a>Intra-rater-test-retest reliability was determined by comparing Investigator A’s averages from test session 1 images to test session 2. The average of the three investigators (A, B and C) results from test session 1 was also compared against their average of results from test session 2 to determine inter-rater-test-retest reliability.</a></p><br>