【摘要】 本文通过文献资料法、数理统计法、实地考察法、对比分析法等研究方法,对参加2015年全国竞走大奖赛(北京站)暨北京田径世锦赛选拔赛男、女20km竞走分别取得前八名的运动员的比赛成绩、前后半程成绩、分段速度及速度变化特征进行分析、研究。发现:男、女20km竞走前8名运动员前、后半程速度变化特征表现为"前快后慢"和"前慢后快"两种类型;全程速度变化特征男、女运动员表现出不同的类型,男子20km竞走前8名运动员的速度变化特征主要包括3种类型,即倒"U"型,倒"W"型和倒"V"型,女子20km竞走前8名运动员全程速度变化特征主要包括4种类型,既"倾斜直线型","波浪起伏型",倒"U"型和倒"W"型。运动员在比赛过程中,应根据自己的竞技水平以及参赛状态,选择最适合自己的速度变化类型。更多还原

【Abstract】 This article analyzed and researched the competition achievements, segmentation speed, and speed variation characteristics of the first eight athletes who participated Beijing world championship tryouts in the 2015 national grand prix race walking, using the literature material method, mathematical statistics method, on-the-spot investigation method, comparison analysis and other research methods. The research shows that race walking athletes have different changing speed in the first half performance and in the second half performance. Some are quiker in the first half performance while others are quicker in the second half performance. Men and women show different types in the entire speed changes. For men, three types are included, namely the inverted "U" type, "W" type and "V" type, and for women, there are four types mainly included, that is, both linear, lumpy, inverted; "U" type and "W" type. In the process of competing, athletes should choose the most suitable speed change type for themselves according to their own level and participating state.更多还原