Relationship between kinematic parameters of the trunk and the upper limb and performance with starting equipment.

  • Chen Zhouye
    Hiroshima University, Health and Sports Sciences, Graduate School of Education
  • Ishii Yoshimasa
    Hiroshima University, Health and Sports Sciences, Graduate School of Education
  • Watanabe Kazuhiko
    Hiroshima University, Health and Sports Sciences, Graduate School of Education
  • Ueda Takeshi
    Hiroshima University, Health and Sports Sciences, Graduate School of Education
  • Kurokawa Takashi
    Hiroshima University, Health and Sports Sciences, Graduate School of Education

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Other Title
  • 児童期の立ち幅跳びにおける上肢と下肢のタイミングの取り方に関する研究
  • ジドウキ ノ タチ ハバトビ ニ オケル ジョウシ ト カシ ノ タイミング ノ トリ カタ ニ カンスル ケンキュウ

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The aim of this study was to analyze the timing of upper and lower limbs during standing long jump in school children by biomechanics. One hundred twenty eight elementary school boys (6-11yrs) and ten male adults participated in this study. Subjects performed standing long jump as far as possible, the motion of the body segments was monitored and analyzed using a 2-D video analysis system. We focused on shoulder, hip and knee joints. RESULTS: The velocity of extension and flexion on shoulder joint increase with age. The flexion time of shoulder joints decrease from 1st grade to 4th grade, the extension time of hip joints increase from 4th grade to adults, but no significant differences were observed at the flexion time of knee joints. The time (SHT) from the shoulder's flexion moment (SFM) to the hip's extension moment (HFM) decreases with age. SFM and HEM in the 6th grade and adults were observed almost in the same time. Performance was significantly related to SHT (r= - 0.577,p<0.001). CONCLUSION: The timing of upper and lower limb during standing long jump was changing during elementary school children. We should know these characteristics when we teach standing long jump.

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