The purpose of this study is to conduct simultaneous measurement of CMVJH using the XOS motion capture system and the Vertec system. Ten participants (body height: 170.17 cm ± 13.4, body weight: 79.76 kg ± 17.72) from the Marshall University student body comprised the testing group. Participants were instructed on proper CMVJ technique. Five practice jumps at 50% effort were conducted. Participants donned a compression suit with reflective markers. The paired t-tests indicated that a difference existed in CMVJ height measured between the Vertec and the XOS VJ was (p= .000), SEM of 1.4 with a .823 correlation and the Vertec and the XOS COG was also (p= .000), SEM of 1.42 with a correlation of .788. A marked difference exists between the XOS SportMotion capture system`s methods of measuring CMVJ height when compared to Vertec measurement.
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