a Centro de Engenharia Biomedica, Unicastelo, Sao Jose Dos Campos , São Paulo , Brazil.
Eur J Sport Sci. 2013;13(6):653-8. doi: 10.1080/17461391.2013.775350. Epub 2013 Mar 8.
The goal of this paper was to investigate the possible trade-off between peak hand acceleration and accuracy and consistency of hand strikes performed by martial artists of different training experiences. Ten male martial artists with training experience ranging from one to nine years volunteered to participate in the experiment. Each participant performed 12 maximum effort goal-directed strikes. Hand acceleration during the strikes was obtained using a tri-axial accelerometer block. A pressure sensor matrix was used to determine the accuracy and consistency of the strikes. Accuracy was estimated by the radial distance between the centroid of each subject's 12 strikes and the target, whereas consistency was estimated by the square root of the 12 strikes mean squared distance from their centroid. We found that training experience was significantly correlated to hand peak acceleration prior to impact (r(2)=0.456, p =0.032) and accuracy (r(2)=0. 621, p=0.012). These correlations suggest that more experienced participants exhibited higher hand peak accelerations and at the same time were more accurate. Training experience, however, was not correlated to consistency (r(2)=0.085, p=0.413). Overall, our results suggest that martial arts training may lead practitioners to achieve higher striking hand accelerations with better accuracy and no change in striking consistency.
本文旨在探究不同训练经验的武术运动员在达到峰值手部加速度与手部击打准确性和一致性方面是否存在权衡。十位男性武术运动员参与了此次实验，他们的训练经验从一年到九年不等。每位参与者都进行了 12 次最大努力的目标导向击打。手部加速度是通过三轴加速度计获得的。压力传感器矩阵用于确定击打动作的准确性和一致性。准确性通过每个受试者的 12 次击打与目标的质心之间的径向距离来估计，而一致性则通过从质心到 12 次击打的平均平方距离的平方根来估计。我们发现，训练经验与击打前的手部峰值加速度（r²=0.456，p=0.032）和准确性（r²=0.621，p=0.012）显著相关。这些相关性表明，经验更丰富的参与者表现出更高的手部峰值加速度，同时也更准确。然而，训练经验与一致性没有相关性（r²=0.085，p=0.413）。总的来说，我们的结果表明，武术训练可能会使练习者达到更高的手部击打加速度，同时提高准确性，而不会改变击打一致性。
