Robalino Johan, Cambri Lucieli Teresa, Cavalcante André, Franchini Emerson, Mezêncio Bruno, Ferreira Jacielle Carolina
Postgraduate Program in Physical Education, Federal University of Mato Grosso, Cuiabá 78060-900, Brazil.
Martial Arts and Combat Sports Research Group, Sport Department, School of Physical Education and Sport, University of São Paulo, São Paulo 05508-060, Brazil.
J Funct Morphol Kinesiol. 2024 Aug 26;9(3):145. doi: 10.3390/jfmk9030145.
Karate athletes strategically use lower-limb techniques in combat, with the roundhouse kick () being highly effective in kumite. To quickly improve the technical performance before training or competitions, conditioning activities (CAs) are often utilized. Recently, Whole-Body Vibration (WBV) has emerged as a potential conditioning activity (CA). This study aimed to analyze the acute effects of WBV as a CA on the performance of the . The sample included sixteen male karate athletes. The study had a familiarization and two experimental sessions: one with WBV and the other without (NWBV), conducted randomly and counterbalanced, each preceded and followed by a assessment on a force platform. During the CA intervention, the participants performed four sets of isometric half-squats on a vibration platform at a frequency of 26 Hz and an amplitude of 4 mm in the WBV condition, while the platform was off in the NWBV condition. A significant reduction in the attack phase time was observed under the WBV condition [pre: 0.31 ± 0.03 s; post: 0.30 ± 0.03 s] compared to the NWBV condition [pre: 0.31 ± 0.04 s; post: 0.32 ± 0.03 s] ( = 0.02). However, no differences were noted regarding the impact force or other kinetic variables between the conditions. Therefore, WBV did not increase the performance of the kinetic and kinematic variables of the in karate athletes, but it is possible that there is a positive effect on attack time, suggesting that further studies with different vibration protocol configurations would be beneficial.
空手道运动员在比赛中会策略性地运用下肢技术，其中旋风踢（）在组手比赛中非常有效。为了在训练或比赛前快速提高技术表现，通常会采用体能训练活动（CAs）。最近，全身振动（WBV）已成为一种潜在的体能训练活动。本研究旨在分析WBV作为一种体能训练活动对空手道旋风踢表现的急性影响。样本包括16名男性空手道运动员。该研究包括一个熟悉阶段和两个实验环节：一个是WBV环节，另一个是无WBV环节（NWBV），随机进行且采用平衡设计，每个环节前后都在测力平台上进行一次评估。在体能训练干预期间，参与者在WBV条件下于振动平台上以26赫兹的频率和4毫米的振幅进行四组等长半蹲，而在NWBV条件下平台关闭。与NWBV条件相比，在WBV条件下观察到旋风踢攻击阶段时间显著缩短[训练前：0.31±0.03秒；训练后：0.30±0.03秒]，而NWBV条件下[训练前：0.31±0.04秒；训练后：0.32±0.03秒]（ = 0.02）。然而，两种条件下在冲击力或其他动力学变量方面未发现差异。因此，WBV并没有提高空手道运动员旋风踢的动力学和运动学变量表现，但有可能对攻击时间有积极影响，这表明采用不同振动方案配置进行进一步研究将是有益的。
