Several devices (e.g., linear transducers) have been used for predicting resistance training intensity. However, subjective scales, such as rating of perceived exertion (RPE), are proposed as reliable and easier-to-use tools for monitoring intensity during resistance training. Accordingly, different perceptive scales have been presented in previous research for monitoring intensity during resistance training with elastic bands. The aim was to assess the accuracy and reliability of RPE for quantifying the potential maximal repetitions that could be performed at a given RPE (from 2 to 8 of 10) obtained in the first repetition. For this purpose, 13 recreationally active participants (age: 26.33 [6.52] years, body mass index: 24.97 [5.08] kg/m2) were involved in two familiarization and two experimental sessions. In each session, participants randomly performed one set at each intensity of the first repetition from 2/10 to 8/10 until volitional failure in three different exercises (fly, military press, and push-press). An individual grip width of the elastic band was chosen in each set. The number of repetitions and heart rate were assessed. Significance level was set at p < .05. Repetitions decreased when intensity increased (p < .01) and heart rate was higher in the global exercise (i.e., push-press; p < .05), but nonsignificant differences between intensities were reported. The level of experience influenced the number of repetitions performed (p < .05). Intersession reliability was set from good to excellent (range: 0.64-0.91). Therefore, the RPE of the first repetition is a relevant and reliable parameter related to the total number of repetitions performed for each RPE value in trained participants enrolled in elastic bands resistance training.

中文翻译：

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第一次重复中的感知用力评级与弹力带训练中执行的总重复次数有关。

多种设备（例如，线性传感器）已被用于预测阻力训练强度。然而，主观量表，例如感知用力等级（RPE），被提议作为可靠且易于使用的工具，用于监测阻力训练期间的强度。因此，之前的研究提出了不同的感知尺度来监测弹力带阻力训练期间的强度。目的是评估 RPE 的准确性和可靠性，以量化在第一次重复中获得的给定 RPE（10 次中的 2 次到 8 次）可以执行的潜在最大重复次数。为此，13 名休闲活跃的参与者（年龄：26.33 [6.52] 岁，体重指数：24.97 [5.08] kg/m2）参与了两次熟悉和两次实验。在每次训练中，参与者从 2/10 到 8/10 的第一次重复的每个强度随机进行一组，直到在三种不同的练习（飞翔、军事推举和推举）中出现意志力衰竭。每组中选择单独的松紧带握距宽度。评估重复次数和心率。显着性水平设置为 p < .05。当整体运动强度增加（p < .01）且心率较高（即推举；p < .05）时，重复次数会减少，但强度之间的差异不显着。经验水平影响重复次数 (p < .05)。会话间可靠性设置为从良好到优秀（范围：0.64-0.91）。因此，第一次重复的 RPE 是一个相关且可靠的参数，与参加弹力带阻力训练的受训参与者的每个 RPE 值所执行的重复总数相关。