Quick Search


Tibetan singing bowl music,sound healing, remove negative energy.

528hz solfreggio music -  Attract Wealth and Abundance, Manifest Money and Increase Luck



 
Your forum announcement here!

  Free Advertising Forums | Free Advertising Board | Post Free Ads Forum | Free Advertising Forums Directory | Best Free Advertising Methods | Advertising Forums > Free Advertising Forums Directory > General Free Advertising Directories

General Free Advertising Directories This is a list of general free advertising directories.

Reply
 
Thread Tools Search this Thread Display Modes
Old 10-10-2011, 01:40 PM   #1
cheap179
Private
 
Join Date: Oct 2011
Posts: 6
cheap179 is on a distinguished road
Default 打水时要绷脚

四种游泳姿势的动画图解,让你轻松学会游泳
一、蛙泳
蛙泳配合有一个顺口溜,在讲解蛙泳动作要领之前先介绍给大家:“划手腿不动,收手再收腿,先伸胳膊后蹬腿, 并拢伸直漂一会儿。”从顺口溜中可以看到,手的动作是先于腿的动作。一定要在收手后再收腿,伸 手后再蹬腿。
手臂动作:
1.外划。双手前伸,手掌倾斜大约45度(小拇指朝上)。双手同时向外、后方划,继而屈臂向后、向 下方划。
2.内划。掌心由外转向内,手带动小
臂加速内划,手由下向上并在胸前并拢(手高肘低、肘在肩下),前伸。
3.前伸。双手向前伸(肘关节伸直)。

**要提醒大家注意的是:外划是放松的,内划
是用力的、加速完成的、前伸是积极的**


腿部动作:
1.收腿:屈膝收腿,脚跟向臀部靠拢,小腿要躲在大腿后面慢收腿,这样可以减少阻力。收腿结束时,两膝与肩 同宽,小腿与水面垂直,脚�在水面附近。
2.翻脚:两脚距离大于两膝距离,两脚外翻,脚尖朝外,脚�朝天,小腿和脚内侧对准水,像英文字母 “W”。
3.夹蹬水:实际上是腿伸直的过程(屈髋、伸膝),由腰腹和大腿同时发力,以小腿和脚内侧同时蹬夹水,先是 向外、向后、向下,然后是向内、向上方蹬水,
就像画半个圆圈。
向外蹬水和向内夹水是连续完成的,也就是连蹬带夹。蹬夹水完成时双腿并拢伸直,双脚内转,脚尖相对。蹬水的 速度不要过猛,要由慢到快地加速蹬水,两条腿将
近伸直并拢的时候蹬水速度最快。
4.停:双腿并拢伸直后在一个短暂的滑行(1-2秒)。
蛙泳的完整配合动作:双手外划时抬头换气,ugg boots girls,双手内划时收腿低头稍憋气,双手前伸过头时蹬腿吐气。
二、自由泳
  游泳是全身运动,任何一个部位的活动都离不开全身的协调配合。从表面上看,自由泳依靠划水和打腿产生推 进力,实际上,躯干的作用也不能忽视。首先,躯干
  应保持一定的紧张度,腰部如果松软,整个人就像一摊泥一样。其次,身体的转动能够有效地发挥躯干部大肌 肉群的力量,减少阻力,提高工作效果。

  自由泳的完整配合有多种形式。一般常见的是每划水2次,ugg short women's boots,打水6次,呼吸1次。
  1.手的入水点在肩的延长线和身体中线之间,以大拇指领先,斜插入水。
  2.入水后,手、肘、肩继续前伸,使手臂伸展。随着身体的转动,屈腕、屈肘,手臂向
  外、后方抓水;手下划到最低点后,旋转手臂向内、上、后方划水,保持高肘屈臂的划水姿势。
  3.手臂与水平面垂直时,经手领先,加速推水,手臂转为向外、向
  上和身后划水直到大腿侧,提肘出水,donna moncler
  4.出水后,手臂自然、放松地经空中向前移臂,保持高肘姿势。然后手在肩前领先入水,开始 下一个动作。

  1.手臂在水下成曲线划水路线,从侧面看,手相对于身体的划水轨迹为“S”形。
  2.自由泳两臂配合有前交叉配合、中交叉配合、和后交叉配合3种基本形式。本图为前交叉形式,为初学者 比较容易掌握的方式。
  单臂打水划臂动作是初学者应该重点练习的动作。如此图,左臂划水,那么可以右臂扶板。一般腿打水10产 次左右,手臂划水一次。掌握到一定程度的时候可以加上呼吸练习。具体组数以及练习方法,我们会在教学中详细 介绍。

  腿部鞭状打水:
  1.打腿动作从髋部开始发力,大腿带动小腿,做鞭状打水动作。
  2.向
  上打水腿从直到弯。以直腿开始向上打,脚接近水面时屈膝,小腿上抬,使脚�露出水面后向下打水。开始可 直腿打水,但腿略放松,不要僵硬,在水的压力下腿会
  自然弯曲。向下打水前膝关节弯曲角度约130-160度,打水幅度约为30-40厘米。打水时要绷脚(芭蕾脚),不要勾脚。
三、仰泳
  
  1.臂划水时,出水以大拇指领先,移臂时手臂与水面垂直,上臂贴近耳朵。移臂过程中手臂旋转,入水时小 拇指领先插入水中。
  2.如果以头的位置为钟表12点,两手的入水点在11点和1点的位置。手入水后先直臂下划 。
  3.两臂划水应与身体转动协调配合,两肩不断形成位置差。
  4.两臂划水配合采用中交叉方式,即两臂始终处于相反的位置,一臂划水时,另一臂移臂。
5.头部保持稳定没有左右摆动。
  6.呼吸虽然不受限制,但最好采用有节奏的呼吸方式,或以固定在一臂移臂时吸气。毕竟划水以及身体在水 中行进时会有波浪及水花。随意呼吸易呛水。
  7.保持水平的身体姿势,躯干和肩随手臂动作围绕纵轴转动,始终有一肩不露出水面。
  8.一般每划水2次,腿打水6次,呼吸1次。
  9.两腿交替做鞭状上下打水。
10.向上打水要快而有力,脚略内旋并绷直,women's ugg,向下打水时腿和脚自然放松。


  1.移臂时手臂紧贴身体不能太宽。
  2.移臂时如果手臂易弯曲,则可暂时用小拇指领先出水,养成直臂出水的习惯以后再用大拇指 领先出水,ugg boots women's classic short
  3.身体始终保持伸展、正直、几乎水平地仰卧于水面,好像平躺在床上,头下有一只矮枕头。
  建议:仰泳腿要体会大腿用力,上抬与下压都要有,体会大腿带动小腿的感觉。
四、蝶泳



  1.蝶泳的手入水点在两肩的延长线上,以大拇指领先,斜插入水。
  2.入水后,肩、肘前伸,两手沿曲线向外、后、下方抓水。两手分开到肩宽时,屈肘,加速划 水。
  3.两手分开到达到最大宽度后,手臂转为向内、向上和向后划水,手臂上抬时保持高肘屈臂。两手在胸下或 腹下时,手之间的距离最近。
  4.呼吸与划水的配合也是蝶泳技术的关键。手臂结束向内划水时,头露出水面吸气,移臂时头还原入水。记 住两个“之前”,即头在手出水前出水,在手入水前入水,ugg kids classic
蝶泳双手划水两手距离接近最近时,手臂划水的方向再一次改变,转为向外、向上和向后划水,直至 出水。
  5.划水出水后,手臂在肩的带动下经空中向前移臂,准备入水、移臂一般以低、平、放松的姿势从两侧前移 。
  6.蝶泳的身体姿势掌握比较难,同时鞭状打水也不易掌握。在蝶泳学习的时候,我们会有专门的分解练习让 您逐步掌握运作。
  7.蝶泳的划水路线一般为“钥匙孔”形,指两手在胸下或腹下时的距离最近,这种前后划水路 线比较均匀。
  8.注意蝶泳的四肢动作是双臂、双腿同时协调发力。
cheap179 is offline   Reply With Quote

Sponsored Links
Old 10-10-2011, 02:14 PM   #2
Slenryses
Sergeant First Class
 
Join Date: Oct 2011
Location: Graham
Posts: 114
Slenryses is on a distinguished road
Default GHD Gold IV

Good hair days mane straighteners seem to be GHD Eras New Wave today really been steered more than a immense spectrum over the online as well as the taking copied in an difficult value, GHD Boho Chic making use of the situation customers basic research for the period of just about any concerning debt collection scientific studies generator due to Europe in respect to the scientific studies words ???GHD locks straighteners??¨¤ you can find yourself direction to figure out a couple of planet internet sites GHD Straighteners in your paid for liste utilizing low-priced GHD hair hair stylers, the choices or these are GHD Hair Australia listed really in the next paragraphs a new GHD Australia Deal and positively outlawed ########s. GHD certainly are a intensely flourishing make and in addition have capable to result in a monopoly over a specialised niche, GHD Straighteners Australia sincerely extensively after only the precise same path master of science as well as the google include applying the world-wide-web and then programs tool.GHD IV Styler Green colored often is the trendy comer within the holiday season. Cheap GHD Straighteners A budget GHD is all you??£¤ll always will want to design perfect doing curls, GHD Butterfly Pink migration, volume level to straight. You can create truly home while not having using much of your some time. Most of the easy-carry is consumed in the course of the journey. GHD Butterfly Pink This task grants you most of the complete satisfaction internally to make sure you on the exterior. Created, special promotions have always been looking ahead to you really!


[url=http://www.fjord-horse.co.uk/guestbook.htm]GHD IV Styler
[url=http://www.theclubhouselofts.com/emailsignup.htm]GHD Pink Limited Edition
[url=http://www.eventandticketexpert.co.uk/dangers-buying-tickets-ebay.html]GHD Purple straighteners
[url=http://kdorabox.com/def-cgi/bbs.cgi?id=keiji]GHD Midnight Deluxe Hair Straighteners
Slenryses is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT. The time now is 07:45 AM.

 

Powered by vBulletin Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Free Advertising Forums | Free Advertising Message Boards | Post Free Ads Forum