Resumen de Predicting Loading Intensity Measuring Velocity in Barbell Hip Thrust Exercise

Moisés de Hoyo Lora, Francisco J. Nuñez, Francisco de Borja Sañudo Corrales, Oliver Gonzalo Skok, Alejandro Muñoz López, Sergio Romero Boza, Carlos Otero Esquina, Hugo Sanchez, Sophia Nimphius

• The barbell hip thrust is an increasingly used exercise to target the hip extensors. Direct and indirect measurement of 1 repetition maximum (1RM) to determine the relative load of each exercise is time-consuming; therefore, practitioners may be more in favor of monitoring velocity and determining relative load through velocity-based prediction models for an exercise. This study aimed to assess the relationship between mean velocity (MV) and mean propulsive velocity (MPV) at different relative training loads (%1RM) in the barbell hip thrust exercise. One hundred two male sport science students performed an incremental 1RM testing protocol for the barbell hip thrust exercise, and a linear position transducer measured MV and MPV of the barbell. The 1RM was reached at 0.25 +/- 0.03 m[middle dot]s-1, and the regression model generated to estimate a relative load showed an acceptable standard error of estimate (7.01 +/- 1.05% 1RM and 7.36 +/- 1.05% 1RM for MV and MPV, respectively) with a very large explained variance (R2 = 0.94). These results may have important practical applications for the prescription and monitoring of the accessory exercise of the hip thrust for monitoring training load and predicting 1RM without undertaking a RM test.