García-López D, Herrero J A, Abadía O, García-Isla F J, Ualí I, Izquierdo M
Laboratory of Physiology, European University Miguel de Cervantes, Valladolid, Spain.
Int J Sports Med. 2008 Sep;29(9):764-9. doi: 10.1055/s-2008-1038376. Epub 2008 Apr 9.
This study aimed to investigate the role of rest period duration (RP) on the time course of the acceleration portion (AP) and mean velocity of the concentric phase across two bench press sets to failure with a submaximal load (60% of the 1RM) using different RP. Ten elite junior kayakers performed, on four different days, two consecutive bench press sets to failure, allowing randomly 1-, 2-, 3- and 4-min RP between sets. AP reached a maximal value of 66% of the concentric movement time. This maximal AP was observed in repetition number 2 or 3, and then AP declined during the set, with a significant decrease when the number of repetitions was over 80% of the total number of repetitions performed. AP and lifting velocity patterns of the concentric phase were not altered during a second set to failure, regardless of RP. However, when velocity was expressed in absolute terms, 1-min RP was insufficient to maintain the average lifting velocity during the second set, compared to the first one. These results may be of use in selecting number of repetitions and resting duration in order to ensure optimal maintenance of the accelerative portion of concentric movement time with different resting-period durations.
本研究旨在探讨在使用次最大负荷（1RM的60%）进行两组卧推至力竭的过程中，不同休息时间（RP）对加速阶段（AP）的时间进程和向心阶段平均速度的作用。十名精英青少年皮划艇运动员在四个不同的日子里进行了两组连续的卧推至力竭，两组之间随机给予1分钟、2分钟、3分钟和4分钟的休息时间。AP达到向心运动时间的66%的最大值。在第2次或第3次重复时观察到这个最大AP，然后在一组中AP下降，当重复次数超过总重复次数的80%时显著下降。无论休息时间如何，在第二组至力竭过程中，向心阶段的AP和提升速度模式均未改变。然而，当以绝对值表示速度时，与第一组相比，1分钟的休息时间不足以在第二组中维持平均提升速度。这些结果可能有助于选择重复次数和休息时间，以确保在不同的休息时间内，向心运动时间的加速部分能得到最佳维持。
