健康幼儿投掷能力发展的运动学分析

发布时间：2018-01-19 06:10

本文关键词： 健康幼儿投掷生物力学运动学分析　出处：《沈阳体育学院学报》2013年06期 　论文类型：期刊论文

【摘要】：为了探讨健康幼儿投掷动作发展的运动学特征,为促进幼儿科学地进行投掷练习提供理论依据,采用平面定点解析的方法,对2至6岁健康幼儿投掷动作进行运动学分析,并比较不同年龄其动作发展变化情况。通过研究发现:2~6岁幼儿在投掷动作发展中运动学特征性别差异逐渐增强;幼儿随着年龄的增长引臂和最后用力时肩、肘关节角度均有逐渐变大的趋势,4岁以后关节角度增加得愈加明显;4岁以后,物体出手瞬间幼儿有明显的屈腕动作,但随年龄的增长这种屈腕的程度在逐渐减小,这种改变可使物体抛出时出手角度更合理,增加抛出远度。
[Abstract]:In order to explore the kinematic characteristics of the development of healthy children's throwing movements, and to provide theoretical basis for promoting children's scientific throwing exercises, the method of plane fixed-point analysis was adopted. A kinematic analysis was performed on the throwing movements of healthy children aged 2 to 6 years. Through the study, it was found that the gender differences of kinematics characteristics of children aged 2 to 6 in the development of throwing movements were gradually increased. With the increase of age, the angle of elbow joint increased more and more obviously after 4 years of age. After 4 years of age, the children have obvious wrist flexion at the moment of object shooting, but the degree of wrist flexion decreases gradually with the increase of age. This kind of change can make the angle of release more reasonable and increase the distance of throwing out when the object is thrown out.
【作者单位】：沈阳农业大学;沈阳体育学院;
【基金】：辽宁省自然科学基金课题(编号:20102210) 辽宁省高等学校杰出青年成长计划(编号:WJQ2011051)
【分类号】：G613.7
【正文快照】： 幼儿运动能力发展受其神经发育和身体素质发展影响,并随月龄的增长呈现一定的规律性。幼儿从爬、行走、跑步到跳跃,四肢的运动越来越协调,不同年龄大动作的发展也具有不同的特征[1-4]。投掷对于幼儿来讲是一个很难的动作,需要全身很多部分协调一致的共同参与,并在复杂的生物

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