Relationship Between Concentric Velocity at Varying Intensity in the Back Squat Using Wireless Inertia Sensor

The purpose of this study was to determine the relationship between the Minimal Velocity Threshold (MVT) of 1RM and repetitions until failure testing conditions using the back squat exercise. Fourteen injury-free males with experience in the back squat volunteered to perform a 1RM and a submaximal (70% 1RM) repetitions until failure test, each during different testing sessions. Mean Concentric Velocity (MCV) was collected using a wireless inertia-measuring device. The last successful repetition in either condition was considered the MVT. A very small relationship between 1RM and repetitions until failure MVT was found ( r =-0.135). There were no significant differences between testing sessions and the effect size was small (Cohen’s d =0.468) between each testing session. The small relationship and the non-significant p -value might suggest there is individual variance with MVT. In conclusion, the results of this study do not support a general MVT for the back squat comparing 1RM and submaximal repetitions until failure.