仰式打水和捷式打水的浮力來源? - 游泳討論

By Rachel
at 2011-08-19T21:44
at 2011-08-19T21:44
Table of Contents
捷腳在向下打時 水有給小腿和腳板向上向前的力
所以下肢會浮
尤其是腳板因為向下打伸展到了關節緊繃角度 就會有一個板子在打水的功能
但是仰腳 大腿前側用力把放鬆的小腿以下肢幹往上踢
雖然膝關節可以卡住讓大小腿呈直線下打
但
腳踝以下往下打的時候因為是腳底去打水
所以腳踝有很大的伸展空間 讓腳底沒辦法像捷腳一樣有板子打水的功能
沒辦法有捷腳一樣的浮力
我的理解是這樣:
所以為了讓它像捷腳一樣
腳底板必需有一定程度的下壓(或內八也有下壓的效果)
不過我就是外八骨架 要我內八很痛苦
所以我打了半天就是浮不起來
而因為氣腔(胸頭等)都在上半身 所以適度的把氣腔往下帶可以讓下肢比較浮
但是這樣鼻子會嗆水耶= =
(我試過連蛙鏡都在水面以下 聽到鼻腔咕嚕咕嚕慢慢被水灌滿 但是打得起來......)
而且跟大眾說法要挺胸好像矛盾
如果挺胸不是讓下肢上浮 那是為什麼?流線體型嗎?
或是有版友可以提供一些仰打水的道理?
我看泳隊他們有辦法把一隻手伸出且垂直水面 另一隻往頭頂伸且和水面平行
這樣子都有辦法打完50M 所以仰打水應該也有和捷打水的效果?
有人是用自己的想法去仰打水嗎?而非直接套用現有的挺胸啦 收下巴啦等公式?
可以給我參考看看嗎?@_@
喔 聽版友這麼一講我補些定義:
我定義於此文中的浮力為
"因身體對水施力 水給的反作用力 能讓身體浮起來的"
不是那種"浮力等於物體在水面下的同等體積的水重量"喔~
而因為體型的關係 讓水有流速快慢的差別 造成壓力差而給身體的力量
(通常會讓那個力量向上 也就是身體下的水流慢 身體上的水流快)
有版友練習時有參考到這邊的想法也可以給我參考看看@_@
--
Tags:
游泳
All Comments

By Skylar DavisLinda
at 2011-08-21T17:27
at 2011-08-21T17:27

By Thomas
at 2011-08-25T19:58
at 2011-08-25T19:58

By Todd Johnson
at 2011-08-29T02:11
at 2011-08-29T02:11

By Rebecca
at 2011-08-31T22:34
at 2011-08-31T22:34

By Caitlin
at 2011-09-05T02:04
at 2011-09-05T02:04

By Erin
at 2011-09-08T04:12
at 2011-09-08T04:12

By Jacky
at 2011-09-10T20:37
at 2011-09-10T20:37

By Jack
at 2011-09-11T13:24
at 2011-09-11T13:24

By Agnes
at 2011-09-15T23:04
at 2011-09-15T23:04

By Ethan
at 2011-09-18T22:37
at 2011-09-18T22:37

By Sarah
at 2011-09-22T23:56
at 2011-09-22T23:56

By Belly
at 2011-09-26T01:22
at 2011-09-26T01:22

By Skylar Davis
at 2011-09-26T17:52
at 2011-09-26T17:52

By Michael
at 2011-10-01T16:31
at 2011-10-01T16:31

By James
at 2011-10-04T00:24
at 2011-10-04T00:24

By Zora
at 2011-10-04T23:57
at 2011-10-04T23:57

By Aaliyah
at 2011-10-06T17:23
at 2011-10-06T17:23

By Sierra Rose
at 2011-10-09T06:42
at 2011-10-09T06:42

By Cara
at 2011-10-12T03:10
at 2011-10-12T03:10

By Elma
at 2011-10-12T05:20
at 2011-10-12T05:20

By Suhail Hany
at 2011-10-17T01:48
at 2011-10-17T01:48

By Mason
at 2011-10-20T09:35
at 2011-10-20T09:35

By George
at 2011-10-24T17:19
at 2011-10-24T17:19

By Rebecca
at 2011-10-29T13:59
at 2011-10-29T13:59

By Tom
at 2011-11-01T12:58
at 2011-11-01T12:58

By Sierra Rose
at 2011-11-03T12:33
at 2011-11-03T12:33

By Yuri
at 2011-11-08T08:28
at 2011-11-08T08:28

By Yuri
at 2011-11-11T07:27
at 2011-11-11T07:27

By Anonymous
at 2011-11-14T08:48
at 2011-11-14T08:48

By Joseph
at 2011-11-15T17:07
at 2011-11-15T17:07

By Jacky
at 2011-11-19T07:01
at 2011-11-19T07:01

By Caitlin
at 2011-11-22T01:32
at 2011-11-22T01:32

By Lauren
at 2011-11-23T02:09
at 2011-11-23T02:09

By Hamiltion
at 2011-11-27T03:55
at 2011-11-27T03:55

By Doris
at 2011-11-30T16:27
at 2011-11-30T16:27

By Olive
at 2011-12-04T23:15
at 2011-12-04T23:15

By Lily
at 2011-12-09T01:38
at 2011-12-09T01:38

By Olive
at 2011-12-11T06:40
at 2011-12-11T06:40

By Audriana
at 2011-12-11T18:27
at 2011-12-11T18:27

By Zora
at 2011-12-14T09:47
at 2011-12-14T09:47

By Carolina Franco
at 2011-12-19T05:14
at 2011-12-19T05:14

By Rebecca
at 2011-12-24T04:41
at 2011-12-24T04:41

By Steve
at 2011-12-28T08:00
at 2011-12-28T08:00

By Ingrid
at 2011-12-31T13:02
at 2011-12-31T13:02

By Carolina Franco
at 2012-01-04T10:22
at 2012-01-04T10:22

By Freda
at 2012-01-05T02:40
at 2012-01-05T02:40

By John
at 2012-01-08T08:13
at 2012-01-08T08:13

By Brianna
at 2012-01-09T18:59
at 2012-01-09T18:59

By Kyle
at 2012-01-13T07:25
at 2012-01-13T07:25

By Margaret
at 2012-01-14T06:43
at 2012-01-14T06:43

By Blanche
at 2012-01-16T09:03
at 2012-01-16T09:03

By Ethan
at 2012-01-18T00:29
at 2012-01-18T00:29

By Elvira
at 2012-01-19T22:54
at 2012-01-19T22:54

By Kristin
at 2012-01-24T14:51
at 2012-01-24T14:51

By Noah
at 2012-01-26T15:30
at 2012-01-26T15:30

By Dora
at 2012-01-29T18:09
at 2012-01-29T18:09

By Jessica
at 2012-02-01T08:59
at 2012-02-01T08:59

By Ula
at 2012-02-03T08:40
at 2012-02-03T08:40

By Catherine
at 2012-02-08T05:44
at 2012-02-08T05:44
Related Posts
初級救生員訓練

By Tristan Cohan
at 2011-08-19T20:49
at 2011-08-19T20:49
明年想參加救生員班

By Leila
at 2011-08-19T00:24
at 2011-08-19T00:24
隔了十個月再次重回游泳懷抱,結果卻......

By Genevieve
at 2011-08-18T21:14
at 2011-08-18T21:14
游了2900M 還是不會累 @@a

By Zora
at 2011-08-18T21:06
at 2011-08-18T21:06
新手學蛙式

By Callum
at 2011-08-18T20:55
at 2011-08-18T20:55