| 韵律性身体活动改善幼儿侧滑步下肢积分肌电贡献率的研究 |
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| 引用本文： | 吴升扣,纪仲秋,李曙刚,刘威彤.韵律性身体活动改善幼儿侧滑步下肢积分肌电贡献率的研究[J].成都体育学院学报,2016(5):23-28. |
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| 作者姓名： | 吴升扣 纪仲秋 李曙刚 刘威彤 |
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| 作者单位： | 1. 中国人民大学,北京,100872;2. 北京师范大学,北京,100875;3. 河北科技师范学院,河北 秦皇岛,066004 |
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| 基金项目： | 中国人民大学科学研究基金(中央高校基本科研业务费专项资金资助)项目(16XNF025)。 |
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| 摘 要： | 目的：从动作发展的视角出发，将幼儿阶段应掌握的基本动作技能设计到韵律性身体活动中，通过分析幼儿侧滑步下肢肌肉放电情况的变化，比较这种新幼儿韵律性身体活动与一般性幼儿韵律性活动效果差异。方法：将38名受试对象按照年龄随机分为实验组与对照组，实验组幼儿周一至周五每天进行动作发展视角下的韵律性身体活动，每天累计活动时间为20－30分钟，运动干预周期为一年。对照组则进行一般性的韵律性身体活动。运动干预前后，记录受试者侧滑步时下肢肌电活动，选取积分肌电值、下肢主要肌群积分肌电贡献率为指标评估幼儿下肢肌电活动的变化。结果：（1）运动干预后，实验组与对照组的积分肌电贡献率较运动干预前的整体变化为主动肌积分肌电贡献率的上升和拮抗肌积分肌电贡献率的下降。（2）运动干预后，侧滑步第一时相中，实验组3岁组幼儿腓肠肌（右）积分肌电贡献率显著高于对照组，股直肌（右）积分肌电贡献率显著低于对照组；5岁组幼儿腓肠肌（左）的积分肌电贡献率显著高于对照组，股二头肌（左）积分肌电贡献率显著低于对照组。结论：运动干预后，实验组幼儿的侧滑步动作发展水平都有了提高，在做侧滑步时对主动肌与拮抗肌的控制变得更加协调；动作发展视角下的韵律性身体活动在改善幼儿侧滑步动作下肢肌肉放电情况，促进幼儿侧滑步动作发展方面优于一般性的韵律性身体活动。
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| 关 键 词： | 幼儿 下肢肌电活动 韵律性身体活动 积分肌电贡献率 动作发展 |
An Empirical Study on the Effect of Young Children's Rhythmic Physical Activities on Promoting the Lower Limb iEMG Contribution |
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| WU Shengkou,JI Zhongqiu,LI Shugang,LIU Weitong.An Empirical Study on the Effect of Young Children's Rhythmic Physical Activities on Promoting the Lower Limb iEMG Contribution[J].Journal of Chengdu Physical Education Institute,2016(5):23-28. |
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| Authors: | WU Shengkou JI Zhongqiu LI Shugang LIU Weitong |
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| Abstract: | Objective:To integrate the basic movement skills that young children should master into a set of rhythmic physical activities and then compare the effect of the activities with that of existing ones through analyzing the change in young children's lower limb iEMG. Methods:38 children were randomly divided into the experimental group and the control group by age. The experimental group participated in the designed rhythmic physical ac-tivities from Monday to Friday,20 - 30 minutes a day,and the motor intervention lasted for one year,while the control group participated in only common rhythmic activities. Before and after the intervention,The electro-myographic activities during children's slide steps were recorded and assessed by the iEMG and the iEMG con-tribution of the main muscles of lower limbs. Results:(1)After the intervention,the general change in the lower limb iEMG contribution in both groups lies in the rise of agonistic muscle iEMG contribution and the drop of antagonistic muscle iEMG contribution;(2)After the intervention,in the first phase of slide steps,the iEMG contribution of Gas (right)in the experimental group was significantly higher than that of the control group while the iEMG contribution of RF(right)in the experimental group was significantly lower than that of the control group;the iEMG contribution of Gas (left)in the experimental group of 5 - year - old children was significantly higher than that of the control group while the iEMG contribution of BF(left)in the experimental group was significantly lower than that of the control group. Conclusion:After the intervention,both groups presented obvious improvement in slide step movement,and showed better control over the coordinated move-ment of agonistic muscle and antagonistic muscle. The change of lower limb iEMG contribution in the experi-mental group was better than that of the control group on the whole. This shows that the rhythmic physical activ-ities based on motor development are better than common physical activities in improving muscle discharge of lower limbs during slide steps and in promoting the development of young children's slide steps. |
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| Keywords: | Young Children Electromyographic Activities of Lower Limbs Rhythmic Physical Activities iEMG Contribution Motor Development |
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