Author(s): Eliza Beales, Chandler Sefcik
Mentor(s): John Chaston
Institution BYU
RESULTS AND CONCLUSION: Results indicated that measurements at 30° generally yielded lower CV values than those at 90°, especially on day three. Across muscles, the vastus medialis showed the least variation regardless of depth, while measurements taken at the bottom half of muscle depth were more consistent across days, possibly due to reduced movement in deeper fibers. The vastus lateralis displayed the greatest inconsistency at both depths. Current data is insufficient to definitively identify which angle provides the most consistent day-to-day measurements. An estimated sample size of 63 subjects per group per angle, would be required to achieve adequate statistical power (80%) at a 5% significance level. Therefore, additional data are needed to accurately determine consistency across angles.