影响自由式滑雪空中技巧动作难度的相关因素分析

Affecting Factors on Action Difficulty of Freestyle Skiing Aerials

对影响自由式滑雪空中技巧动作难度的主要因素进行深度探讨,旨在为提高该项目的训练方法和手段提供参考。研究表明:影响助滑速度的主要因素有场地因素、环境因素和动作因素;影响腾空起跳的主要因素有出台的速度和体位角度;影响空中动作的主要因素有腾空的高远度、空中动作的质量和身体姿态;影响落地动作的主要因素有下肢的关节角度,腿部、腰腹部等肌肉力量和落地体位角度等,这些是自由式滑雪空中技巧动作完成成功与否的决定因素。

The authors discuss deeply major factors affecting action difficulty of freestyle skiing aerials,in order to provide references for improving the training methods and means.The results show thatⅰ.Site factor,environmental factor and action factor are the main factors affecting the approach speed;ⅱ.Leaving platform speed and posture angle are the main factors affecting launching and taking off;ⅲ.The mainr factors affecting aerials action are launching Height,aerials action quality and body posture;ⅳ.The main factors affecting the action falling to the ground are joint angle of leg,muscle strengths such as leg and waist-abdomen,posture angle falling to the ground,etc.,which are determinants for freestyle skiing aerials action accomplishing.