Koh T J, Grabiner M D, Weiker G G
Department of Biomedical Engineering and Applied Therapeutics, Cleveland Clinic Foundation, Ohio 44196.
Am J Sports Med. 1992 Jan-Feb;20(1):61-6. doi: 10.1177/036354659202000115.
The ground reaction forces at the hand that produced compression forces and varus/valgus moments at the elbow joint during the double-arm support phase of the back handspring were studied. The relationship of technique, namely elbow joint flexion, to these forces were also studied. Compression forces and forces producing valgus moments have been implicated in overuse injuries to the elbow joint. Video and force plate analysis of six young female gymnasts showed that 1) the elbow joint flexed during the double-arm support phase, and 2) the reaction forces at the hand produced large compression forces (an average of 2.37 times body weight) and sizable valgus moments at the elbow (an average of 0.03 times body weight times body height). The combination of these forces may contribute to the occurrence of lateral compression injuries of the elbow joint (e.g., osteochondritis dissecans of the capitellum). Correlations of measures of elbow angle and measures of reaction force showed that large elbow flexions may protect the elbow from large valgus moments.
研究了后手翻双臂支撑阶段手部产生的地面反作用力，这些力在肘关节处产生压缩力和内翻/外翻力矩。还研究了技术（即肘关节屈曲）与这些力的关系。压缩力和产生外翻力矩的力与肘关节的过度使用损伤有关。对六名年轻女性体操运动员的视频和测力板分析表明：1）在双臂支撑阶段肘关节屈曲；2）手部的反作用力在肘关节处产生了较大的压缩力（平均为体重的2.37倍）和相当大的外翻力矩（平均为体重乘以身高的0.03倍）。这些力的组合可能导致肘关节外侧压缩损伤（例如，肱骨小头剥脱性骨软骨炎）的发生。肘关节角度测量值与反作用力测量值的相关性表明，较大的肘关节屈曲可能保护肘关节免受较大的外翻力矩影响。
