基于速度的抗阻训练监测：在抗阻训练的男性中，举重带、参考重复次数和变量选择的影响。
Velocity-Based Resistance Training Monitoring: Influence of Lifting Straps, Reference Repetitions, and Variable Selection in Resistance-Trained Men.
机构信息
Sport Performance Research Institute New Zealand (SPRINZ), Auckland University of Technology, Auckland, New Zealand.
School of Engineering, Computer and Mathematical Sciences, Auckland University of Technology, Auckland, New Zealand.
出版信息
Sports Health. 2023 May;15(3):333-341. doi: 10.1177/19417381221095073. Epub 2022 May 19.
BACKGROUND
Using lifting straps during pulling exercises (such as deadlift) may increase absolute velocity performance. However, it remains unclear whether lifting straps could also reduce the degree of relative fatigue measured by velocity decline and maintenance in a training set.
HYPOTHESIS
There will be less mean velocity decline (MVD) and greater mean velocity maintenance (MVM) for deadlifts performed with (DLw) compared with without (DLn) lifting straps, and an underestimation of MVD and MVM when using the first compared with the fastest repetition as a reference repetition.
STUDY DESIGN
Randomized cross over design.
LEVEL OF EVIDENCE
Level 3.
METHODS
A total of 16 resistance-trained men performed a familiarization session, 2 1-repetition maximum [1RM] sessions (1 with and 1 without lifting straps), and 3 randomly applied experimental sessions consisting of 4 sets of 4 repetitions: (1) DLw against the 80% of DLn 1RM (DLwn), (2) DLn against the 80% of the DLn 1RM (DLnn), and (3) DLw against the 80% of the DLw 1RM (DLww). MVD and MVM were calculated using the first and the fastest repetition as the reference repetition.
RESULTS
MVD was significantly lower during DLwn and DLnn compared with DLww ( < 0.01), whereas MVM was greater during DLwn and DLnn compared with DLwn ( < 0.01) with no differences between DLwn and DLnn for both MVD and MVM ( > 0.05). The second repetition of the set was generally the fastest (54.1%) and lower MVD and higher MVM were observed when the first repetition was used as the reference repetition ( < 0.05).
CONCLUSION
Lifting straps were not effective at reducing MVD and increasing MVM when the same absolute loads were lifted. Furthermore, using the first repetition as the reference repetition underestimated MVD, and overestimated MVM.
CLINICAL RELEVANCE
The fastest repetition should be used as the reference repetition to avoid inducing excessive fatigue when the first repetition is not the fastest.
背景
在拉力练习（如硬拉）中使用提升带可能会提高绝对速度表现。然而，目前尚不清楚提升带是否还可以减少训练组中以速度下降和保持来衡量的相对疲劳程度。
假设
与不使用（DLn）提升带相比，使用提升带进行的硬拉（DLw）的平均速度下降（MVD）会更小，平均速度保持（MVM）会更大，并且当将第一次重复作为参考重复时，会低估 MVD 和 MVM。
研究设计
随机交叉设计。
证据水平
3 级。
方法
总共 16 名受过抗阻训练的男性进行了一次熟悉的训练，2 次 1 次重复最大[1RM]测试（1 次使用和 1 次不使用提升带），以及 3 次随机应用的实验测试，每个测试由 4 组 4 次重复组成：（1）在 80%的 DLn 1RM（DLwn）下进行 DLw，（2）在 80%的 DLn 1RM（DLnn）下进行 DLn，以及（3）在 80%的 DLw 1RM（DLww）下进行 DLw。使用第一次重复和最快重复作为参考重复来计算 MVD 和 MVM。
结果
与 DLww 相比，DLwn 和 DLnn 时的 MVD 明显更低（<0.01），而与 DLwn 相比，DLwn 和 DLnn 时的 MVM 更高（<0.01），而在 MVD 和 MVM 方面，DLwn 和 DLnn 之间没有差异（>0.05）。一组的第二个重复通常是最快的（54.1%），当使用第一次重复作为参考重复时，观察到 MVD 较低，MVM 较高（<0.05）。
结论
当使用相同的绝对负荷时，提升带不能有效降低 MVD 和增加 MVM。此外，使用第一次重复作为参考重复会低估 MVD，并高估 MVM。
临床相关性
当第一次重复不是最快时，应使用最快重复作为参考重复，以避免过度疲劳。
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