Article Title



Tony Ramos, Joseph Sherman, Scott Richmond; Missouri State University

PURPOSE: The purpose of this study was to test the validity of an application that measures velocity of objects by video capture while comparing it to a proven velocity calculation by using the movement of a barbell during a Power Clean. METHODS: Five previously resistance trained participants volunteered for the study. Participants completed an approved Informed Consent document before testing. Body Weight (BW) was taken and calculation of 50% and 75% of BW was performed. Participants completed 3 repetitions (reps) of power clean at 50% of their BW and 3 power cleans at 75% of their BW with a minute rest in between each rep. Two different devices were used to determine movement velocity of the reps. The first device utilized the application that measures velocity directly by video capture. The second device used an application that allowed for hand calculations of velocity by video capture and simple conversions. RESULTS: An independent samples T-test showed that the 50% reps showed significant differences between the two applications (p=.040), and the 75% reps showed no significant differences between the two applications (p=.155). CONCLUSION: Higher percentages of body weight performed during a power clean showed no significant differences between the two applications, while lower percentages showed significant differences. This preliminary data leads us to believe that the application may be more accurate with heavier weights due to decreased movement velocities. A follow-up study involving larger sample sizes and percentages of body weight needs to be performed to further explore these findings.

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