蛙泳重心前移很重要

iswim

蛙泳 动作结束后脚后跟上提水面练习方式 2011年goswim最新理念
一些初学者对游泳运动存在一些误解,对于技术的学习也存在很多的问题,尤其是在初学蛙泳的过程中,会经常出现身体下沉现象。而造成蛙泳身体下沉的原因主要有学习蛙泳身体的重心、浮心不平衡、恐惧心理引起的身体下沉、人体状态反射效应导致塌腰下沉、身体姿势的改变、环境和介质的改变等,具体原因分析如下:1、学习蛙泳身体的重心、浮心不平衡身体的重心、浮心不平衡是学习蛙泳身体下沉的主要原因。地球引力对人体合力的作用点为人体重心,当人体平卧在水中时,它一般位于骼骨中心点,且女性较男性还要偏于下肢。水中浮力对人体合力的作用点称为人体在水中的浮心。由于胸腔密度较小,下肢密度较大的缘故,人体平卧于水中或水面时(上肢置于体侧),浮心偏上,重心偏下。即重心与浮心不重合,这样由于力矩的作用,就会产生翻转,在水中表现为下肢下沉。然而在水中展体伸臂,可以达到使人体重心前移的目的。并且先天游泳素质较好的者,伸臂可以达到重心与浮心重合的效果。只要重心与浮心重合,在一条直线上,人体就不会下沉。

Breaststroke - High-Heels Recovery
The breaststroke kick is the most disruptive swimming move in our sport.  Creating as little resistance as possible during the set up for this action can be a huge advantage to your swimming

Why Do It:
The higher your recovery of the heels, the less resistance you'll create in setting up the kick.  This over-exaggeration can help you get the feet a little closer to where you want them.
How to Do It:
1.  You can do this during any normal breaststroke set; it doesn't have to be a special drill set.
2.  Kick normally, which generally means your feet will travel in a slightly downward angle.
3.  Then allow the legs to relax a bit and follow their natural path a bit higher in the water.
4. When you start your pull, slide your feet just above the surface and into the recovery.
How to Do It Really Well (the Fine Points):
Draw your feet into the recovery from above the water.  Don't allow them to fall back into the water, but draw them forward.  See if you can slide your feet into the recovery without showing any splash back onto the surface of the water (like our aging model is showing).

说得具体点嘛

回复 皮蛋 的帖子

重心前移快...不要把腿拖沓在水里..

很多站着游的.

楼主发贴辛苦了，谢谢楼主分享！
厦门游泳社区就是我的家！

脚后跟上提水面，会使重心前移吗？好像是会塌腰。

柴斯菲德伯爵 发表于 2011-6-9 23:14
脚后跟上提水面，会使重心前移吗？好像是会塌腰。

核心力量问题吧

野和尚告诉我的方法是：臀部尽量贴近水面（可以手背贴在臀部上感觉），然后慢收腿再水平向后翻蹬腿

我看不错噢 谢谢楼主 > _ <
厦门游泳社区就是我的家！

教练也这么教，太笨，学不会