Abstract：
Coordinative patterns require experience and learning to be acquired, producing movements that offer efficient solutions to various situations and involving certain degree of variability. This coordination variability implies functionality in movement, but it can be impacted by the type of sport practice from early years. The purpose of this work is to analyze the coordination variability and coordination patterns in a specific action such as single-leg landing in children practicing gymnastics, volleyball and non-sporting children. Thirty children (15 girls) performed 10 successful trials of single-leg landing from a height of 25 cm. A motion capture system (9 cameras) was used to capture 3D thigh and shank kinematics. To identify the significant effect of children\'s groups on coordination and coordination variability during single-leg landing, one-dimensional Statistical Parametric Mapping (SPM) was used. Regarding the coordination patterns, in the frontal plane, during the attenuation phase of single-leg landing, the control group exhibited a higher frequency of Anti-Phase with proximal dominancy compared to the sport groups (i.e., gymnastics, and volleyball). In addition, in the sagittal plane during the second peak phase, volleyball players exhibited a higher coordination variability than the gymnastics. The children in the control group showed a greater frequency of antiphasic movements, which indicates the influence of training at an early age, being a determining factor in the increase or not of variability.
摘要：
协调模式需要经验和学习才能获得，产生运动，为各种情况提供有效的解决方案，并涉及一定程度的可变性。这种协调可变性意味着运动中的功能性，但它可能会受到早期体育实践类型的影响。这项工作的目的是分析儿童练习体操中单腿着陆等特定动作中的协调变异性和协调模式，排球和非运动儿童。30名儿童（15名女孩）从25厘米的高度进行了10次成功的单腿着陆试验。运动捕捉系统（9台摄像机）用于捕捉3D大腿和小腿运动学。为了确定儿童群体对单腿着陆过程中的协调和协调变异性的显著影响，使用一维统计参数图(SPM)。关于协调模式，在额叶平面,在单腿着陆的衰减阶段，与运动组相比，对照组表现出具有近端优势的反相位频率更高(即，体操,和排球）。此外,在第二峰值阶段的矢状平面中，排球运动员比体操运动员表现出更高的协调变异性。对照组的儿童表现出更高的逆相运动频率，这表明了早期训练的影响，是变异性增加与否的决定因素。
