俯角弧形斜板在背越式跳高教学中的应用分析.docx

摘要
随着跳高运动技术的发展,速度在背越式跳高中的重要作用己毋庸置疑。我们知道, 跳高所需的速度,主要通过助跑获得;而起跳效果的好坏,在很大程度上又取决于助跑速度在起跳阶段转换成垂直速度的效果。其中助跑技术的质量,特别是弧线段助跑时人体内倾角的大小,直接影响着起跳技术的发挥。在高速助跑下,使人体在弧线段助跑的过程中获得一个适宜的内倾角度,对加大腾起角,获得良好的起跳效果以达到优异的成绩尤为重要。为此,本文根据背越式跳高助跑和起跳的技术特点,针对提高助跑速度和增大内倾角度、针对影响快速助跑起跳的因素设计出俯角弧形斜板,即在背越式跳高助跑的弧线部分设计一条跑台,跑台弧形部分外高内低,高度逐渐下降;并运用在背越式跳高教学中。本文通过文献资料法、专家调查法、问卷调查法、实验法、对比分析法、数理统计法、录像拍摄分析法和运动生物力学法对其实验进行研究分析,研究结果表明:
1 本文通过实验数据分析得知:在俯角弧形斜板上助跑时,助跑速度较平地上助跑速度快,故而俯角弧形斜板助跑能提高人体重心的最大速度,进而可以达到提高运动成绩的目的。
2 本文通过实验数据分析得知:在俯角弧形斜板上助跑时,开始速度较慢,但是在很短时间内速度就达到较大速度,说明俯角弧形斜板助跑能起到迅速提高速度的目的,通过这种训练可以增加单位时间内训练的次数,提高训练的效率、增加训练的强度。
3 本文通过实验数据分析得知:在俯角弧形斜板上助跑能在短时间内实现加速,故而在俯角弧形斜板上助跑时能对腿部产生较大的冲击力;俯角弧形斜板助跑能加大人体内倾角度,所以说俯角弧形斜板是既能改进起跳技术,又能提高起跳能力的有效练****手段。
4 本文通过实验数据分析得知:,另外经过T 检验结果分析显示P<,说明实验班和对照班的运动成绩具有显著性差异,所以说明实验班通过俯角弧形斜板这一教学手段训练方法能显著提高成绩,俯角弧形斜板对运动成绩的提高具有非常显著的效果。
关键词:背越式跳高;助跑;俯角弧形斜板;内倾角度
Abstract
With the development of high jump, without doubt that speed has e the important role in the Fosbury flop. We know that the speed required for high jump can mainly be got through run-up. While the effect of take-off is largely determined by the effect that run-up speed changes into the vertical speed in take-off stage. The quality of run-up technology, especially the size of introversion angle at the time of Arc segment run-up, impact on take-off technology directly. At the speed of a high-speed run-up, the body will get a suitable introversion point of view in the process of run-up of the arc segment. It is very important for the Canadian Large off angle and a good take-off effect to achieve excellent performance. This paper will design curved ramp angle of depression according to technical features of the Fosbury flop run-up and take-off, improving of the speed of run-up and increasing in run-up tilt angle. It also means that designing a treadmill in the part of Fosbury flop arc line. There is a high outside and low inside of the arc. It can be used in the teaching of Fosbury flop. In this paper, literature,