上半身反应力在 Yurchenko 跳马和自由体操中的比较。
A Comparison of Upper-Extremity Reaction Forces between the Yurchenko Vault and Floor Exercise.
机构信息
University of Kentucky , USA.
Utah State University , USA.
出版信息
J Sports Sci Med. 2005 Jun 1;4(2):85-94.
The purpose of this study was to examine reaction forces transmitted to the upper extremities of high-level gymnasts during the round-off phase of the Yurchenko vault. A secondary purpose of this study was to compare reaction forces during the Yurchenko vault to reaction forces observed in a tumbling pass during the floor exercise. Ten high-level, female gymnasts volunteered to participate. Conditions of the independent variable were the Yurchenko vault and floor exercise; dependent variables were peak vertical and peak anterior-posterior reaction forces. Each participant performed three trials of both conditions with the trail hand contacting a force platform. Vertical and anterior-posterior reaction forces, normalized to body weight, were greater (p < 0.05) during the round-off phase of the Yurchenko vault (2.38) than during the floor exercise round-off (2.15). Vertical reaction forces during the round-off phase of the Yurchenko vault and floor exercise round-off are similar to reaction forces transmitted to upper extremities during other gymnastic skills and ground reaction forces transmitted to lower extremities while running and walking at various speeds. Results of this study reveal a need for further research considering methods aimed at reducing reaction forces transmitted to the upper extremities during the Yurchenko vault and floor exercise. Key PointsDespite high difficulty and increased risk, a dearth of information exists concerning reaction forces transmitted to upper-extremities of high-level gymnasts performing the Yurchenko vault.Reaction forces experienced by high-level gymnasts performing the Yurchenko vault are relatively high; aforementioned forces are comparable to forces transmitted to lower-extremities during various activities and may be responsible for upper-extremity injury.Reaction forces observed during this study will serve as a baseline in the evaluation of methods purporting to reduce forces transmitted to upper-extremities during the Yurchenko vault.
本研究的目的是研究在 Yurchenko 跳马的旋子阶段传递到高水平体操运动员上肢的反作用力。本研究的次要目的是比较 Yurchenko 跳马和地板运动中翻滚通过时的反作用力。十名高水平女性体操运动员自愿参加。自变量条件为 Yurchenko 跳马和地板运动；因变量为垂直和前后向峰值反作用力。每个参与者在三个试验中都完成了这两个条件，手触力台。垂直和前后向反作用力，归一化到体重，在 Yurchenko 跳马的旋子阶段（2.38）比地板运动的旋子阶段（2.15）更大（p <0.05）。Yurchenko 跳马和地板运动旋子阶段的垂直反作用力与其他体操技能传递到上肢的反作用力以及在不同速度下跑步和行走时传递到下肢的地面反作用力相似。本研究的结果表明，需要进一步研究旨在减少在 Yurchenko 跳马和地板运动中传递到上肢的反作用力的方法。要点尽管难度较高且风险增加，但有关高水平体操运动员执行 Yurchenko 跳马时传递到上肢的反作用力的信息却很少。执行 Yurchenko 跳马的高水平体操运动员所经历的反作用力相对较高；上述力与各种活动中传递到下肢的力相当，可能是上肢受伤的原因。本研究中观察到的反作用力将作为评估旨在减少 Yurchenko 跳马期间传递到上肢的力的方法的基线。
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