School of Sport and Recreation, Auckland University of Technology, Auckland, New Zealand.
Department of Evaluation and Prescription of Physical Training, Faculty of Health Sciences, Catholic University of Cordoba, Cordoba, Argentina.
Sports Health. 2022 Jan-Feb;14(1):92-98. doi: 10.1177/19417381211055696. Epub 2021 Nov 15.
BACKGROUND: Adding wearable resistance (WR) to training results in superior performance compared with unloaded conditions. However, it is unclear if adding WR during warm-up influences training load (TL) in the subsequent session. The aim of this research was to track TL in soccer players during the transition from late preseason to early in-season and examine whether adding WR to the lower leg during a warm-up influenced TL measures during warm-ups and on-field training sessions after WR was removed. HYPOTHESIS: The addition of WR worn on the lower legs during an on-field warm-up would lead to decreases in relatively high-intensity external TL metrics, such as distance covered >6.11 m∙s and acceleration and deceleration >/<3 m∙s and increases in internal TL during the warm-up, yet would have little effect on the subsequent training session when WR was removed. STUDY DESIGN: Matched-pair randomized design. LEVEL OF EVIDENCE: Level 3. METHODS: A total of 28 soccer players were allocated to either a WR training (WRT = 14) or unloaded (control [CON] = 14) group. Both groups performed the same warm-up and on-field training for 8 weeks, with the WRT group wearing 200 to 600 loads on their lower leg during the warm-up. External TL was measured via global positioning system data and internal TL was assessed using session rating of perceived exertion (sRPE × time per session). RESULTS: No statistically significant between-group differences ( ≥ 0.05) were identified for any TL measurement during either warm-ups or training sessions. Lower leg WR resulted in trivial to moderate effects for all external TL metrics (-16.9% to 2.40%; = -0.61 to 0.14) and sRPE (-0.33%; = -0.03) during the warm-up and trivial to small effects on all external TL metrics (-8.95% to -0.36%; = -0.45 to -0.30) and sRPE (3.39%; = 0.33) during training sessions. CONCLUSION: Warming up with lower leg WR negatively affects neither the quality and quantity of the warm-up nor the subsequent training session once WR is removed. CLINICAL RELEVANCE: Using WR on the lower leg during on-field warm-ups may be a means to "microdose" strength training while not unduly increasing TL. However, further research is needed to determine the influence of WR on strength qualities.
背景：与无负载条件相比，在训练中增加可穿戴阻力（WR）会导致表现更优。然而，目前尚不清楚在热身期间增加 WR 是否会影响随后的训练课中的训练负荷（TL）。本研究的目的是在足球运动员从季前后期过渡到赛季早期时跟踪 TL，并检查在去除 WR 后，在下腿上增加 WR 是否会影响热身和场上训练课中的 TL 测量值。 假设：在场上热身期间在下腿上增加 WR 会导致相对高强度的外部 TL 测量值（如＞6.11 m·s 的距离、＞/<3 m·s 的加速度和减速度）下降，同时在热身期间增加内部 TL，但当去除 WR 时，对随后的训练课几乎没有影响。 研究设计：配对随机设计。 证据水平：3 级。 方法：共有 28 名足球运动员被分配到 WR 训练（WRT = 14）或未加载（对照 [CON] = 14）组。两组均进行了 8 周相同的热身和场上训练，WRT 组在热身期间在下腿上佩戴 200 至 600 的负荷。外部 TL 通过全球定位系统数据测量，内部 TL 通过会话感知用力评分（sRPE×每个会话的时间）评估。 结果：在任何热身或训练课中，两组之间均未发现任何 TL 测量值的统计学显著差异（≥0.05）。下腿 WR 导致所有外部 TL 测量值（-16.9%至 2.40%；= -0.61 至 0.14）和 sRPE（-0.33%；= -0.03）在热身时产生较小到中度影响，以及所有外部 TL 测量值（-8.95%至-0.36%；= -0.45 至 -0.30）和 sRPE（3.39%；= 0.33）在训练期间产生较小到中度影响。 结论：在去除 WR 后，用 WR 热身不会影响热身的质量和数量，也不会影响随后的训练课。 临床相关性：在场上热身时在下腿上使用 WR 可能是一种在不增加 TL 的情况下“微量”进行力量训练的方法。然而，需要进一步的研究来确定 WR 对力量素质的影响。
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