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      Biomechanical study on side slip and forward slip promotion among children aged 3-5 years

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          Abstract

          Objective To explore the forces of lower limbs during side slip and forward slip through biomechanical study, and to provide a theoretical basis for the development of lower limb movements.

          Methods BTS SMART DX motion capture analysis system, 8 infrared high-speed cameras, Kistler three-dimensional dynamometer, BTS FREEEMG 1000 portable wireless surface electromyography system were used to collect real-time data of side slip and forward slip. SPSS 20.0 univariate analysis of variance (ANOVA) was used to compare the differences of indicators between different groups.

          Results In the side sliding movement, there were significant differences in hip motion ( P<0.01) between 3-year-old group and 5-year-old group, hip motion ( P<0.01) between 4-year-old group and 5-year-old group, knee motion ( P<0.05) and ankle motion ( P<0.05) between 3-year-old group and 5-year-old group. There was a significant difference in hip motion ( P<0.05) between 3-year-old group and 5-year-old group. The Fx force ( P< 0.01) and vertical Fy force ( P<0.01) in the left and right directions of the 3-year-old group and the 5-year-old group were significantly different in the side-slip movement, while the Fx force ( P<0.01) in the right and left directions of the 3-year-old group and the 5-year-old group were significantly different in the forward-slip movement, and the vertical Fy force ( P<0.05) was significantly different. There were significant differences in the long head of biceps femoris, gastrocnemius and anterior tibial muscle between 3-year-old group and 5-year-old group ( P<0.05). There were significant differences in the middle gluteal muscle, gracilis muscle, adductor magnus, pubic muscle, medial femoral muscle and soleus muscle between 3-year-old group and 5-year-old group ( P<0.05). There was significant difference in the anterior tibial muscle ( P<0.05) between the 3-year-old group and the 5-year-old group in the supporting stage, and significant difference in the gastrocnemius muscle ( P <0.05) during the swing stage. There was significant difference in the anterior tibial muscle ( P<0.05) between the 3-year-old group and the 5-year-old group in the swing stage.

          Conclusion The development of side slip and forward slip in children aged 3 to 5 years old showed that the results suggest motor development increases significantly with age among preschoolers. Rhythmic movements of side slip and forward slip should be selected in the critical period of children’ s movement development at different ages, laying the foundation for good physical and mental development.

          Abstract

          【摘要】目的 采用生物力学方式深人探究幼儿侧滑步及前滑步时下肢受力情况, 为幼儿下肢动作发展研究提供理 论依据。 方法 采用 BTS SMART DX 动作捕捉分析系统、8 台红外髙速摄像机、Kistler 三维测力台、BTS FREEEMG 1000 便 携式无线表面肌电系统实时采集北京市某公立幼儿园 36 名 3~5 岁受试者侧滑步及前滑步数据, 用 SPSS 20.0 单因素分析 比较不同组间指标差异。 结果 侧滑步动作中, 3 岁组与 5 岁组、4 岁组与 5 岁组儿童髋关节活动度比较差异均有统计学 意义( P值均<0.01), 3 岁组和 5 岁组儿童的膝关节活动度和踝关节活动度差异均有统计学意义( P值均<0.05);前滑步动 作中, 3 岁组和 5 岁组儿童的髋关节活动度差异有统计学意义( P<0.05)。 3 岁组、5 岁组儿童侧滑步动作、前滑步动作左右 方向力、垂直方向力差异均有统计学意义( P值均<0.01)。 3 岁组和 5 岁组儿童侧滑步动作中的股二头肌长头、腓肠肌、胚 骨前肌差异均有统计学意义( P值均<0.05);前滑步动作中,3 岁组和 5 岁组臀中肌、股薄肌、大收肌、耻骨肌、股内侧肌、比 目鱼肌差异均有统计学意义( P值均<0.05)。 3 岁组和 5 岁组儿童侧滑步过程中支撑期胚骨前肌、摆动期腓肠肌差异有统 计学意义( P值均<0.05);前滑步过程中,3 岁组和 5 岁组儿童摆动期胚骨前肌差异有统计学意义( P<0.05)。 结论 3~5 岁幼儿侧滑步及前滑步的粗大动作发展表现为随年龄增长而提髙。 建议在不同年龄段幼儿动作发展关键期选用侧滑步及 前滑步的韵律性动作, 为促进幼儿良好的身心发展奠基。

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          Author and article information

          Journal
          CJSH
          Chinese Journal of School Health
          Chinese Journal of School Health (China )
          1000-9817
          01 November 2019
          01 February 2020
          : 40
          : 11
          : 1689-1693
          Affiliations
          [1] 1Beijing Normal University, School of Physical Education and Sports, Beijing (100875) China
          Author notes
          *Corresponding author: JI Zhongqiu, E-mail: jizhongqiu61@ 123456bnu.edu.cn
          Article
          j.cnki.1000-9817.2019.11.025
          10.16835/j.cnki.1000-9817.2019.11.025
          ab6035d0-5908-443b-b979-c8d177ec821d
          © 2019 Chinese Journal of School Health

          This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 Unported License (CC BY-NC 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See https://creativecommons.org/licenses/by-nc/4.0/.

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          Self URI (journal-page): http://www.cjsh.org.cn
          Categories
          Journal Article

          Ophthalmology & Optometry,Pediatrics,Nutrition & Dietetics,Clinical Psychology & Psychiatry,Public health
          Child,Motor activity,Growth and development

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