Unilateral jumps in different directions: a novel assessment of soccer-associated power?
Unilateral jumps in different directions: a novel assessment of soccer-associated power?
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DOI：
10.1016/j.jsams.2017.03.016
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发表时间：
2017-11-01
影响因子：
4
通讯作者：
Erskine, Robert M.
中科院分区：
文献类型：
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作者：
Murtagh, Conall F.;Vanrenterghem, Jos;Erskine, Robert M.
目的：我们的目的是确定是否反向运动跳跃（CMJs;单边和双边）在不同的方向进行评估独立的下肢力量素质，如果单边CMJs将更好地区分精英和非精英足球运动员比双边垂直（BV）CMJ.Design：精英（n = 23;年龄。18.1+/- 1.0岁）和非精英（n = 20;年龄。22.3+/- 2.7岁）的足球运动员进行了三个由，单侧垂直（UV），单侧水平向前（UH）和单侧内侧（UM）CMJ。跳跃性能（高度和射弹射程）、来自地面反作用力的动力学和运动学变量以及来自表面肌电图的股外侧肌和股二头肌（BF）肌肉的峰值激活水平，结果：峰值垂直功率（V功率）在BV中更大（220.2 +/- 30.1 W/kg）与UV相比（144.1 +/- 16.2 W/kg），大于UH（86.7 +/- 18.3 W/kg）和UM（85.5 +/- 13.5 W/kg）（均为p < 0.05），但UH和UM之间无差异（p = 1.000）。UH的峰值BF EMG大于所有其他CMJ（p < 0.001）。除BV（p = 0.197）外，所有CMJ（p < 0.032）中精英组的V-功率均大于非精英组。精英实现更大的UH弹丸射程比非精英（51.6 +/- 15.4与40.4 +/- 10.4厘米，p = 0.009）。结论：我们已经表明，UH，UV和UM CMJ评估不同的下肢肌肉力量能力的足球运动员。此外，由于精英球员在单侧而不是BV CMJ中表现优于非精英球员，因此应将不同方向的单侧CMJ纳入足球特定肌肉力量评估和人才识别协议中，而不是BV CMJ。(C)2017年澳大利亚运动医学。由爱思唯尔有限公司出版。保留所有权利。
Objectives: We aimed to determine whether countermovement jumps (CMJs; unilateral and bilateral) performed in different directions assessed independent lower-limb power qualities, and if unilateral CMJs would better differentiate between elite and non-elite soccer players than the bilateral vertical (BV) CMJ.Design: Elite (n = 23; age. 18.1 +/- 1.0 years) and non-elite (n = 20; age. 22.3 +/- 2.7 years) soccer players performed three By, unilateral vertical (UV), unilateral horizontal-forward (UH) and unilateral medial (UM) CMJs.Methods: Jump performance (height and projectile range), kinetic and kinematic variables from ground reaction forces, and peak activation levels of the vastus lateralis and biceps femoris (BF) muscles from surface electromyography, were compared between jumps and groups of players.Results: Peak vertical power (V-power) was greater in BV (220.2 +/- 30.1 W/kg) compared to UV (144.1 +/- 16.2 W/kg), which was greater than UH (86.7 +/- 18.3 W/kg) and UM (85.5 +/- 13.5 W/kg) (all, p < 0.05) but there was no difference between UH and UM (p = 1.000). Peak BF EMG was greater in UH compared to all other CMJs (p < 0.001). V-power was greater in elite than non-elite for all CMJs (p < 0.032) except for BV (p = 0.197). Elite achieved greater UH projectile range than non-elite (51.6 +/- 15.4 vs. 40.4 +/- 10.4 cm, p = 0.009).Conclusions: We have shown that UH, UV and UM CMJs assess distinct lower-limb muscular power capabilities in soccer players. Furthermore, as elite players outperformed non-elite players during unilateral but not BV CMJs, unilateral CMJs in different directions should be included in soccer-specific muscular power assessment and talent identification protocols, rather than the BV CMJ. (C) 2017 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.