THE CONCURRENT VALIDITY OF MOTION X-RAY TECHNOLOGY UTILISING POLAR VERITY SENSE TO MEASURE VELOCITY, FORCE AND POWER – PILOT STUDY
Abstract
The assessment of force, velocity, and power is useful in order to develop an athlete’s sports performance and avoid any possible injuries. The aim of this study is to assess concurrent validity by using Polar Verity Sense with Motion X-Ray technology in order to measure velocity, force, and power in bench press exercises and compare them with the golden standard (i.e., Qualisys 3D kinematics). This pilot study focused on three male recreational lifters aged 28, with between five and ten years of experience, and a 1RM bench press of 100kg. The procedure lasted for two days. On the first day, 1 RM was assessed on a Smith machine. After seven days, the participants performed two sets of seven bench press repetitions with a 50kg bar on the same machine. The first set was a trial, and the second was analysed. The collected data was analysed using the Polar Verity sensor with Motion X-Ray technology, and 3D kinematic analysis with Qualysis. There were no significant statistical differences between these two systems (p < 0.05), while Pearson correlation showed a high and significant correlation between them (r > 0.692 < 0.999; p < 0.05). This research sets the basis of a new measurement process, which will be easier and more affordable. Future research could focus on bigger research samples, different types of exercise, and faster movements.
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DOI: https://doi.org/10.22190/TEME230307045A
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