Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain.
Sport and Health University Research Center (iMUDS), University of Granada, Granada, Spain.
J Strength Cond Res. 2024 Aug 1;38(8):1379-1385. doi: 10.1519/JSC.0000000000004805. Epub 2024 Apr 25.
Ruiz-Alias, SA, Ramirez-Campillo, R, Leando Quidel-Catrilelbún, ME, García-Pinillos, F, and Pérez-Castilla, A. Inter-repetition rest impact on the estimated repetitions in reserve at various loads and proximities to neuromuscular failure . J Strength Cond Res 38(8): 1379-1385, 2024-The repetitions in reserve (RIR) estimation method allows for monitoring resistance training set volume. However, a significant bias is commonly observed when ending the set further from neuromuscular failure and using lower relative loads. Is unclear if implementing an IRR could improve its estimation validity. This study aimed to determine if the RIR estimation is influenced by the IRR at different relative loads and proximities to neuromuscular failure during the back squat (BQ) and bench press (BP) exercises. After a familiarization session, 19 male subjects (age, 21-26 years) completed an experimental session for each IRR configuration: IRR0 (without rest), IRR3 (3 seconds of rest), and SSIRR (self-selected rest [up to 5 seconds]). In each session, single sets to neuromuscular failure were performed at 3 relative loads (65% 1 repetition maximum [1RM], 75% 1RM, 85% 1RM) for BQ and BP exercises. Using the Estimated Repetitions to Failure scale, subjects estimated the RIR associated with a score of "5" and "2" (i.e., RIR-5 and RIR-2). The results revealed no interactions between the RIR estimation and IRR for BQ (RIR-5: p = 0.812; RIR-2: p = 0.084) or BP (RIR-5: p = 0.884; RIR-2: p = 0.944). Subjects provided valid estimations, with overestimation (BQ RIR-5: 0%; BQ RIR-2: 2.9%; BP RIR-5: 1.1%; BP RIR-2: 2.3%) or underestimation (BQ RIR-5: 14.9%; BQ RIR-2: 4%; BP RIR-5: 15.2% BP RIR-2: 8.2%) in few sets. In conclusion, the RIR estimation method seems valid, and the IRR (0-5 seconds) does not influence its validity at 65-85% 1RM loads nor proximities to neuromuscular failure (RIR-2, RIR-5).
鲁伊斯 - 阿利亚斯，SA，拉米雷斯 - 坎皮洛，R，莱安德罗·奎德尔 - 卡特里尔布恩，ME，加西亚 - 皮尼洛斯，F，和佩雷斯 - 卡斯蒂利亚，A。在不同负荷和接近神经肌肉衰竭时，重复休息对储备估计重复次数的影响。J 力量与调理研究 38(8)：1379-1385，2024-储备重复次数（RIR）估计方法允许监测阻力训练的设置量。然而，当进一步远离神经肌肉衰竭并使用较低的相对负荷时，通常会观察到显著的偏差。目前尚不清楚实施 RIR 是否可以提高其估计的有效性。本研究旨在确定在背部深蹲（BQ）和卧推（BP）运动中，不同相对负荷和接近神经肌肉衰竭时，RIR 估计是否受到 IRR 的影响。在熟悉阶段后，19 名男性受试者（年龄 21-26 岁）为每个 IRR 配置完成了一个实验阶段：IRR0（无休息）、IRR3（3 秒休息）和 SSIRR（自我选择的休息[最长 5 秒]）。在每个阶段，对于 BQ 和 BP 运动，在 3 个相对负荷（65%1 重复最大[1RM]、75%1RM、85%1RM）下进行单次至神经肌肉衰竭的运动。使用“失败估计重复次数”量表，受试者估计与得分“5”和“2”（即 RIR-5 和 RIR-2）相关的 RIR。结果表明，BQ（RIR-5：p=0.812；RIR-2：p=0.084）或 BP（RIR-5：p=0.884；RIR-2：p=0.944）的 RIR 估计与 IRR 之间没有相互作用。受试者提供了有效的估计，在少数几轮中存在高估（BQ RIR-5：0%；BQ RIR-2：2.9%；BP RIR-5：1.1%；BP RIR-2：2.3%）或低估（BQ RIR-5：14.9%；BQ RIR-2：4%；BP RIR-5：15.2%BP RIR-2：8.2%）。综上所述，RIR 估计方法似乎是有效的，而 IRR（0-5 秒）在 65-85%1RM 负荷下或接近神经肌肉衰竭（RIR-2、RIR-5）时并不影响其有效性。
