Predicting Barbell Takeoff Speed from Peak Speed in the Bench Press Throw using a Linear Position Transducer




Henneberry, Molly

Journal Title

Journal ISSN

Volume Title



In order to determine if the takeoff speed of a barbell in a bench press throw may be predicted from the peak speed as measured by a linear position transducer, 10 participants with at least 1 year of resistance training experience performed multiple sets of the bench press throw, at increasing loads, on a vertical Smith machine. Predictive validity was assessed by comparing the estimated takeoff speed, to the measured takeoff speed from a linear position transducer. The relationship between peak and takeoff speed was 0.2589e0.897(PS), and the correlation was statistically significant (R2=0.961, p < 0.05). A Bland-Altman plot revealed the 95% limit of agreement ranged from 0.262 m∙s-1 to 0.175 m∙s-1, with a mean difference of 0.043 m∙s-1 (2.92%), and points above and below zero, suggesting no systematic bias exists. This study demonstrates that takeoff speed of a barbell may be predicted from its peak speed in a barbell bench press throw using a linear position transducer. Therefore, practitioners may use peak speed to estimate takeoff speed more quickly in field testing, when the accessibility and availability of equipment necessary to measure takeoff speed may be a limiting factor.



bench press throw, strength and conditioning, biomechanics, kinesiology, velocity, force-velocity profiling, upper body, performance testing