双推技术一推和二推的辩证关系

student123

先解释一下：我们暂且把单推的动作叫一推。

首先要想清楚此辩证关系，我们应该清楚以下问题：

在双推中，一二推谁的作用更大？换句话就是要了解在用力的难易程度、平衡掌握的难易程度和加速、维持速度方面的难易程度方面，哪一推的作用更大、更容易？

有人说双推并不难，我猜这是那些一开始学轮滑，基本功一点没有就照猫画虎的轮滑者的感觉。我感觉滑好双推，真正掌握双推的技术不容易。对不同的基础、不同的出发点也许双推并不难。

实际可以从平衡（重心）和用力（难易程度和效率）两个方面讨论，我们知道，稳定平衡从心里和生理方面有助于力量的使用。举个例子，一个不太高的锥形平口瓶子，正反放置都可以立在对平放置的平整桌面上，而瓶口向下，就是不稳定平衡，微观世界这样地例子更多（化学反应等）。轮滑双推的二推就是不稳定平衡，因为二推时如果向外倾倒，另一只在后面的腿，是不能作有效的交叉步维持平衡的。而一推就不同了，由于无论角度多大，使用多大的力，另一只脚落地就可以有效降低向内的倾倒趋势。当然这与人的身体结构也有不可忽略的关系，主要体现在结构对用力的影响（暂不赘述）。

以长距离滑为例，由于一推充分使用爆发力，作用时间较短，往往获得比二推更大的加速度，而二推作用的时间较长，主要作用是维持现有速度，延长单脚支撑时间。当然二推也可以加快频率，能快过一推吗？

由于一推的平衡控制比较容易，从而用力容易，所以一推的效率也大于二推。

因为二推有一个较大的外倾角度，又有难度，所以二推是向人们展示技术的必须，这就是为什么看双推都去看二推，而忽略一推（有不少内行就是不一样）。

如果有人说二推的加速能力强过一推，你就大错特错了，除非你一推故意不有效的蹬地。可以试一试，一推时腿几乎可以蹬直，二推就很难了，需要很好的技术，很好的路面，作用还不是很好，且对下面的滑行动作衔接也会产生困难。

因此要有目的的练习双推技术，要坚持循序渐进的原则。要了解一推和二推之间的辩证关系，一推为主，二推稍次之，是相辅相成的关系。如果在充分保证一推效果的前提下，二推效果能比较接近一推，你就算滑得不错了。

HAMMER

今天全用INSIDE来推！哇，开始很快，很好力！但是推久了奶奶的就累了，适当变了下OUTSIDE，舒服多了！OUTSIDE是来续航的！谢谢<FONT face=Verdana color=#61b713><B>student123。。。。</B></FONT>

HAMMER

体会中，老话题，真正做起来还是需要不断练习。

HAMMER

<><FONT size=4>以长距离滑为例，由于一推充分使用爆发力，作用时间较短，往往获得比二推更大的加速度，而二推作用的时间较长，主要作用是维持现有速度，延长单脚支撑时间。当然二推也可以加快频率，能快过一推吗？</FONT></P>
<>这话是中心。。。谢谢。。</P>
<><BR></P>

HAMMER

我感觉最完美的是一推和二推的力量相同，就是<FONT color=#ee1111>基础</FONT>的一推的力量等同与二推的力量。

wolfbeard

俺觉得INSIDE是用来续航的。

HAMMER

<>哈，那就麻烦了。<STRONG><FONT face=Verdana color=#61b713>wolfbeard 画猫吧</FONT></STRONG></P>

HAMMER

<img src="attachments/dvbbs/2005-11/20051181451862625.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-11/20051181451862625.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><BR><img src="attachments/dvbbs/2005-11/20051181452434188.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-11/20051181452434188.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><BR><img src="attachments/dvbbs/2005-11/20051181452955594.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; 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HAMMER

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totally

<>上传图片限制宽松你也不用这样啊....</P>