González-Badillo Juan José, Yañez-García Juan Manuel, Mora-Custodio Ricardo, Rodríguez-Rosell David
Centro de Investigación en Rendimiento Físico y Deportivo, Universidad Pablo de Olavide, Seville, Spain.
Int J Sports Med. 2017 Mar;38(3):217-225. doi: 10.1055/s-0042-120324. Epub 2017 Feb 13.
This study aimed to analyze: 1) the pattern of repetition velocity decline during a single set to failure against different submaximal loads (50-85% 1RM) in the bench press exercise; and 2) the reliability of the percentage of performed repetitions, with respect to the maximum possible number that can be completed, when different magnitudes of velocity loss have been reached within each set. Twenty-two men performed 8 tests of maximum number of repetitions (MNR) against loads of 50-55-60-65-70-75-80-85% 1RM, in random order, every 6-7 days. Another 28 men performed 2 separate MNR tests against 60% 1RM. A very close relationship was found between the relative loss of velocity in a set and the percentage of performed repetitions. This relationship was very similar for all loads, but particularly for 50-70% 1RM, even though the number of repetitions completed at each load was significantly different. Moreover, the percentage of performed repetitions for a given velocity loss showed a high absolute reliability. Equations to predict the percentage of performed repetitions from relative velocity loss are provided. By monitoring repetition velocity and using these equations, one can estimate, with considerable precision, how many repetitions are left in reserve in a bench press exercise set.
1）在卧推练习中，针对不同次最大负荷（1RM的50 - 85%）进行单组至力竭时重复速度下降的模式；2）当每组达到不同程度的速度损失时，已完成重复次数相对于可完成的最大可能次数的百分比的可靠性。22名男性以随机顺序，每隔6 - 7天针对1RM的50% - 55% - 60% - 65% - 70% - 75% - 80% - 85%的负荷进行8次最大重复次数（MNR）测试。另外28名男性针对60% 1RM进行2次单独的MNR测试。研究发现一组中速度的相对损失与已完成重复次数的百分比之间存在非常紧密的关系。所有负荷下这种关系都非常相似，特别是对于1RM的50% - 70%，尽管在每个负荷下完成的重复次数有显著差异。此外，对于给定速度损失的已完成重复次数百分比显示出很高的绝对可靠性。文中提供了根据相对速度损失预测已完成重复次数百分比的方程。通过监测重复速度并使用这些方程，人们可以相当精确地估计卧推练习组中还剩余多少重复次数。
