García-Ramos Amador, Janicijevic Danica, González-Hernández Jorge M, Keogh Justin W L, Weakley Jonathon
Department of Sports Sciences and Physical Conditioning, Universidad Católica de la Santísima Concepción, Concepción, Chile.
Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
PeerJ. 2020 Mar 11;8:e8760. doi: 10.7717/peerj.8760. eCollection 2020.
This study aimed to determine the reliability of the velocity achieved during the last repetition of sets to failure ( ) and the association of with the velocity of the 1-repetition maximum ( ) during the paused and touch-and-go bench press (BP) exercises performed in a Smith machine.
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.
The reliability of was unacceptable for both BP variants (CV > 18.3%, ICC < 0.60). The correlations between and were small for the paused BP ( = 0.18) and moderate for the touch-and-go BP ( = 0.37).
Although these results suggest that could be a better indicator of the minimal velocity threshold than , the low reliability of and the similar values of for both BP variants suggest that a standard should be used to estimate the 1RM from the individualized load-velocity relationship.
本研究旨在确定在史密斯机上进行暂停式和连续推举卧推（BP）练习时，力竭组最后一次重复动作所达到的速度（ ）的可靠性，以及 与一次重复最大值（ ）速度之间的关联。
共有96名健康男性参与了这项包含两个测试环节的研究。在每个环节中，以随机顺序评估一种BP变式（暂停式BP或连续推举BP）。每个环节包括一次递增负荷测试直至达到1RM，随后进行两组针对1RM的75%至90%负荷的重复动作直至力竭。
两种BP变式的 可靠性均不可接受（CV>18.3%，ICC<0.60）。暂停式BP中 与 之间的相关性较小（ =0.18），连续推举BP中相关性中等（ =0.37）。
尽管这些结果表明 可能比 更能作为最小速度阈值的指标，但 的低可靠性以及两种BP变式 的相似值表明，应使用标准 从个体化负荷 - 速度关系中估算1RM。
