影响撑杆跳高撑杆弯曲的力学因素

Takafumi Kageyuki, Takeo Matsubayashi, Tomoki Yamamoto, Fumiaki Kobayashi, T. Asai, Keigo Ohyama-Byun, Kiyonobu Kigoshi
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引用次数: 1

摘要

本研究的目的是确定一个最佳的指标,以评估弯曲的能力,并澄清机械因素,可以影响弯曲的助跑和撑杆在相同的设置,在比赛中。8名男子跳马运动员(4.60米至5.77米:个人最好纪录)参加了比赛。使用运动捕捉系统(250 Hz)获得三维身体坐标。另外,用测力板(1000 Hz)测量箱体反力。结果总结如下:分别)。(2)平动能减小越大,极弯位能增大越小,在MPB处的E极越高(r分别为- 0.87和- 0.80)。(3)质心周围的转动惯量和质心周围角动量出现负峰值时刻的上抓地力越大,在MPB处的E极越高(r分别为0.75和0.79)。这些结果表明,E极是一个更理想的指标来评估能力弯曲的极点。此外,这些结果可以作为技术的实际应用的基础,即充分伸展的姿态摆动运动。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Mechanical Factors Influencing Bending of Pole in Pole Vault
This study aimed to determine the best indicator to evaluate the ability to bend the pole and to clarify the mechanical factors that can influence pole bending with the run-up and pole in the same settings as those in competitions. Eight male vaulters (4.60 m to 5.77 m: personal best record) participated. Three-dimensional body coordinates were obtained using a motion capture system (250 Hz). In addition, the box reaction force was measured with a force plate (1000 Hz). The results were summarized as follows: re-spectively). (2) The larger the decrease in the translational energy and the smaller the increase in the potential energy in pole bending phase, the higher the E pole at MPB (r= −0.87 and −0.80, re-spectively). (3) The larger the moment of inertia around the CG and the upper grip at the instant where the negative peak value of the angular momentum around the CG appeared, the higher the E pole at MPB (r=0.75 and 0.79, respectively). These results suggested that the E pole was a more desirable indicator to evaluate the ability to bend the pole. Additionally, these results can serve as a basis for the practical application of techniques, namely, the swing motion with a fully extended posture.
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