Reliability of the velocity achieved during the last repetition of sets to failure and its association with the velocity of the 1-repetition maximum.

ABSTRACT: Background:This study aimed to determine the reliability of the velocity achieved during the last repetition of sets to failure (V last) and the association of V last with the velocity of the 1-repetition maximum (V 1RM) during the paused and touch-and-go bench press (BP) exercises performed in a Smith machine. Methods:A total of 96 healthy men participated in this study that consisted of two testing sessions. A single BP variant (paused BP or touch-and-go BP) was evaluated on each session in a randomized order. Each session consisted of an incremental loading test until reaching the 1RM, followed by two sets of repetitions to failure against a load ranging from 75% to 90% of 1RM. Results:The reliability of V last was unacceptable for both BP variants (CV > 18.3%, ICC < 0.60). The correlations between V 1RM and V last were small for the paused BP (r = 0.18) and moderate for the touch-and-go BP (r = 0.37). Conclusions:Although these results suggest that V last could be a better indicator of the minimal velocity threshold than V 1RM, the low reliability of V last and the similar values of V last for both BP variants suggest that a standard V 1RM should be used to estimate the 1RM from the individualized load-velocity relationship.

SUBMITTER: Garcia-Ramos A 

PROVIDER: S-EPMC7071817 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature