The ability to coordinate different body parts under different constraints that are imposed by organism, environment, and tasks during motor development might be different in children. The aim of this study was to examine whether children with different motor development levels are different with regard to multijoint coordination during two-hand catching. Eighty-four children (age: 6.05 ±0.67 years) who were assessed on object control skills were recruited voluntarily. The biomechanical model was defined from 20 movements of seven segments (shoulders, elbows, wrists, and torso), and the principal component analysis was used to quantify the multijoint coordination and kinematic synergies during catching. The results showed that the redundancy of joints in two-hand catching is controlled by three kinematic synergies that defined the majority of the variance. The participants who were grouped based on their development levels did not show differences in the number and strength of synergies; however, they were different in the utilization of the kinematic synergies for successful catching. In conclusion, the number and the strength of the kinematic synergies during two-hand catching are not affected by the developmental levels and are related to the nature of the task.

儿童在运动发育过程中受有机体，环境和任务施加的不同约束下协调不同身体部位的能力可能有所不同。这项研究的目的是研究在两只手抓捕过程中，具有不同运动发育水平的儿童在多关节协调方面是否有所不同。自愿招募了八十四名接受对象控制技能评估的儿童（年龄：6.05±0.67岁）。从七个部分（肩膀，肘部，腕部和躯干）的20次运动中定义了生物力学模型，并使用主成分分析来量化捕捞过程中的多关节协调和运动学协同作用。结果表明，双手捕捉中关节的冗余度受三个运动学协同作用的控制，这三个运动学协同作用定义了大部分方差。根据他们的发展水平分组的参与者在协同作用的数量和强度上没有表现出差异。但是，它们在运动学协同增效方面的成功利用却有所不同。总之，双手抓捕过程中运动协同作用的数量和强度不受发展水平的影响，并且与任务的性质有关。