i*********5
发帖数: 19210 | 1 How Champions Do It
http://coachsci.sdsu.edu/swim/champion/evans.htm
JANET EVAN'S FULL STROKE AT 625 m OF HER 800 m GOLD MEDAL SWIM AT THE
BARCELONA OLYMPIC GAMES 1992
Each frame is .1 second apart. The swimmer breathes at the end of each right
arm pull.
Notable Features
Frame #1: This picture illustrates a feature of most top crawl-stroke
swimmers. The right arm entry is made at full stretch (no underwater gliding
) and is accommodated by a very linear posture in the total swimmer. The
uppe... 阅读全帖 |
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i*********5
发帖数: 19210 | 2 http://www.feelforthewater.com/2013/10/elite-swimmer-visualisat
Elite Swimmer Visualisation: Don't Start Too Near The Surface
Below is a series of video stills taken from a selection of elite swimmers
right at the very front of their stroke as they commence the catch:
2x Olympic Gold Medallist Rebecca Adlington:
Our original Mr Smooth Jono Van Hazel:
2x Australian 10km Champion Rhys Mainstone:
2x Commonwealth Gold Medallist Ross Davenport:
Elite Junior Triathlete Sky Draper:
Elite Triathlete Guy... 阅读全帖 |
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i*********5
发帖数: 19210 | 3 再说说手和手腕，到了高级阶段后，入水后手腕可以有些向下弯（但还是不能弯你上面
截屏那么多）。
你看看这篇文章对Katie Ledecky的描述：
5 Things All Swimmers And Triathletes Can Learn From Katie Ledecky’s
Freestyle
http://effortlessswimming.com/freestyle/5-things-all-swimmers-a
5. Hand Always Angled Down From Forearm During Pull
In every part of her catch and pull, Ledecky maintains a forward hand
position where she angles her hand slightly down from her forearm. This
helps her hold more water with each stroke and allows her to ‘anchor’
herself during the c... 阅读全帖 |
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m*m
发帖数: 65 | 4 I found a web sites ranking all tennis racquets' safety.
www.racquetresearch.com
I am not sure if this is a factor for you guys, especially high
level players to choose rackets. I think that injury is really
bad for tennis lovers. Imagine that your wrist is hurt and you
have to rest for a couple of weeks before you can play tennis
again. I had a Head Classic Mid and I frequently felt pain at
the wrist. I have changed to Head Ti.Radical OS and feel better.
The former one has a ranking of 153 and |
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c*********e
发帖数: 1389 | 5 gilbert build up 1-2 ( serve-forehand) for andy. it seems works against most
players but not roger. why? because:
1. their forehand techniques are different. andy firm wrist gives him powerful
and consistent killer shot, however this needs stable stand to unload. but
federer's snapping wrist allows him to generate power and spin on running.
everytime andy run around to unload his forehand, he is pressing himself-he
must come up with excellent shot or federer will punish his forehand open
court, |
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c*******s
发帖数: 19 | 6 斑竹说话了， 那我就来吧。
这次去us open才发现，mm们几乎都一致的喜欢marat.
可惜，几天下来都没看到他。 C&C's LD 更是寻他两年而不过。
我和marat从01年开始。
01年，我回中国，那时他left wrist injury, 可能在中国玩？
一天中午，我和ld在北京新东方广场吃饭，熟悉北京的都知道，那儿可不是什么luxury
的地方。
其实就是个大食堂。
我在等菜的人群里一眼就认出了marat,
我就approach, "are u Marat".
M: "yeah."
I: "Would you mind I sitting here?"
M: "no, go ahead".
所以我就和ld 和marat 一起 lunch. 我现在也不能明白，why no one recognize him?
anyway, that is good for me.
我记的， 问他：
“how's yr wrist injury"? " Are you ready to come back and beat Andy Roddick
?"
I remembered vivi |
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n*********4
发帖数: 83 | 7 I have tried the following and it seems to help me. It could be useful for
some of the ppl here.
The key to a good serve is having a relaxed hand and wrist, just like the
motion used when throwing a ball. Therefore on the serve, the last three
fingers need to be relaxed during contact in order to maximize use of the
hand and wrist. To understand this concept, take a ball in your racquet hand
; squeeze it as hard as you can and while squeezing try to throw it!? The
tension in your hand makes thro |
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r******n
发帖数: 1665 | 8 Split step is not natural
Forehand 3.0 Forehand groundstroke is too tight. You may try to loose your
arm a little bit. That is why your follow through did not wrap around your
body.
Forehand volley 2.5: try to keep the arm close to the body and move FOREWARD
. Bend knees and keep racquet head above your wrist.
Backhand volley 2.5 : try to push the arm away from the body and square your
feet. Bend knees and keep racquet head above your wrist. |
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a*****3
发帖数: 507 | 9 找了一下，我觉得这个比较靠谱。
1) Swing your racket behind you, keeping your wrist angled back so that it's
roughly perpendicular to your forearm.
2) Stroke the ball from low to high. To aim the ball crosscourt, make sure
your wrist is still angled back as the racket makes contact with the ball.
3) Follow through. As you hit the ball, rotate your shoulders so that they
are square with the net and transfer your weight to your front leg. |
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K****D
发帖数: 30533 | 10 You need to use wrist to control the trajectory so that the ball
won't go out of bound.
You may want to watch the video of the 副掌门人 of wrist club: |
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a*****3
发帖数: 10373 | 11 Ooops,第一个回复就是来踢馆的!
http://tennis.about.com/od/forehandfaq/f/faqforehand6.htm
Question:
Should I use any wrist motion on my forehand?
Answer:
Turning your wrist as if you were turning a doorknob is just about the worst thing you can do to your ability to control your forehand. The somewhat popular notion of rolling over the ball to produce topspin is quite silly. Just a couple of degrees of tilt in your racquet face will readily send your shot into the net or long, and there's no way you can time |
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K****D
发帖数: 30533 | 12 Cilic就是你说的第二种wrist啊。
第一种window wiper forehand里要用的吧？偶不会，感觉太容易受伤。
worst thing you can do to your ability to control your forehand. The
somewhat popular notion of rolling over the ball to produce topspin is quite
silly. Just a couple of degrees of tilt in your racquet face will readily
send your shot into the net or long, and there's no way you can time the
rotation of your wrist to put the racquet face at just the right angle
during the few thousandths of a second that it meets the ball.
you prep |
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a*****3
发帖数: 10373 | 13 1. 你说"Cilic就是你说的第二种wrist啊"
2. 现在又说"偶的手腕派就是Cilic这种啊。"
可以推导出: 偶(aka,啃泥地)的手腕派就是你(aka,ak)说的第二种wrist啊.
然而,我一直:
1.认为你说所谓的手腕派有两种:
- 第一种是啃泥地的手腕派
- 第二种是菲菲的手腕派
2.大力反对第一种,也就是啃泥地的手腕派
所以明显与你说的大相径庭!为了不让你一再混淆视听,我已经说过默认手腕派就是啃泥
地的手腕派,至于其他的手腕派,都改称身体派!!
所以以后你讲手腕派我都反对!就把这贴子m了吧,以后我就不用再重复多次了! |
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c***t
发帖数: 1216 | 14 is "window wiper forehand" turning the wrist or the forearm? I think it's
the forearm, or more forearm than the wrist.
quite |
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K****D
发帖数: 30533 | 15 still struggles with right wrist injury.
Now I admire Cilic more, who uses wrist intensively and never had
an issue. |
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b*e
发帖数: 3845 | 16 Prince Classic Graphite OS should be a comfortable racquet to play with.
(check racquetresearch.com)
It's mostly your forms that caused wrist discomfort. Probably your forehand
is too wristy. If you switch to a lighter racquet without changing your form,
you would risk injuring your wrist more seriously. |
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K****D
发帖数: 30533 | 17 NAME - INJURY - PLANNED RETURN
Jose Acasuso - Knee Surgery - Houston (tentative)
Nicolas Almagro - Ankle Injury - Miami (tentative)
Frank Dancevic - Back (Herniated disc) Surgery - No date especified
Nikolay Davydenko - Wrist Injury - Barcelona (rumour he's returning to play
Monte Carlo but would need a WC)
Juan Martin del Potro - Wrist Injury - Rome (tentative)
Taylor Dent - Groin Injury - ret'd R1 Houston. No date especified
Mardy Fish - Sciatic Nerve - No date especified
Marc Giquel - Quadric |
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b*****t
发帖数: 758 | 18 Rest more (especially do not over play tennis that causes the injury), do
strengthening exercise, get a professional grade racquet, and tough it out.
It will get better. Your wrist is not used to your tennis activities yet. I
got injuries all over the body during the first one and a half years of
tennis. (wrist, back of the plam, forearm, elbow, shoulder, upper back,
lower back, groin, ankle). Now my body parts finally hold up. |
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B******a
发帖数: 601 | 19 Poly is not friendly to your wrist. My advice is avoiding it since you are
pro-wrist style player. Sync gut is the best choice for you unless you want
natural guts.
Using poly is not for its durability, it is the control. Nylon is much
better for its durability. |
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S****e
发帖数: 207 | 20 Cannot type chinese now...
I had similar problem two weeks into my spring league this year. I switched
to a somewhat heavier racquet right before the season started and I was not
used to the weight. I ended up with a sprained wrist and almost had to cut
the season short.
Initially I tried using ice packs and strictly avoided using my wrist. But I
was not able to recover fast enough to meet the weekly league schedule.
Then I found this: http://www.youtube.com/watch?v=x_pN3XuR6Xs
It helped me grea |
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K****D
发帖数: 30533 | 21 I can only control using wrist. Overall my directional control is
pretty bad.
Use deuce court as an example:
No pronation: middle
with pronation: T
no pronation but add more wrist snap: wide
I also feel "在DUCE COURT发外角比发内角困难，在ADD COURT 发内角比
发外角困难". |
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a*m
发帖数: 6253 | 22 I would like to toss a little right overhead and pull myself in but still
keep this pronation/snap to hit it up and forward...
From my point of view, your arm joint and shoulder is not relaxed enough and
the wrist is relaxed. Or the chain timing is a little weird. Like your arm
and shoulder is pulling back or hold you back, and only the wrist it do its
work.
.
?.
different
the |
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t****i
发帖数: 4225 | 23 I see what you mean. In this case, it is not an overhead, but the ball is
probably higher than your head. Then you can do what Federer does using a
lot of wrist to smash the ball back, or you can just hold your wrist firm
and volley the ball back to your opponent. |
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a*****3
发帖数: 10373 | 24 无论你是伸直手臂还是double bend, n bend.只要能做到slotting就可以了.
看看以下这段说明,尤其第二段就详细讲解了wrist的用法.如果你是"If the back of
the wrist is allowed to have anything to do with the forward swing until
relatively speaking well after contact, it will be overly wristy and
inconsistent."那你就是属于以啃泥地为首的手腕派,而不是真正的手腕派...
http://www.scottmurphytennis.com/tennisplayer.html
Scott Shot #6 - Slotting
March 13, 2009
Virtually every stroke contains a "slotted" postion of the racquet. It
occurs at the moment just before the racquet is moved |
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K****D
发帖数: 30533 | 25 //sigh, wrist band, $5. My racket, $2. 决定还是不用wrist band... |
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K****D
发帖数: 30533 | 26 Good idea. I can even cut a sock into two then I'll have wrist bands
for both arms!
wrist |
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K****D
发帖数: 30533 | 27 Great footwork.
Very safe play.
Now problems: completely no wrist action, such that there is still
no loose wrist after the contact. Because of that for most balls
the follow through finished on the side not behind your neck.
Also because of that your follow through will tend to drag you
too much in rotation to the right side, and thus consume a lot
of time. As a result, if you hit with a person you will feel lack
of time for the next ball when hitting hard. |
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s*****k
发帖数: 1630 | 28 赞～ 教练教得好，学生也领悟的很好。
对于这个contact at front, 偶想hit-through多些，教练又说偶over-stretch, 你是
怎么体会的？
偶觉得double bend里wrist bend(laid back wrist) 是关键，因为有的pro 用
straight arm也打得很好。
7. The contact point should be as forward as you can, but remember this does
not mean you would stretch your arm to reach forward. No, you still need
to maintain the so-called double bend posture. |
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s*****k
发帖数: 1630 | 29 几乎所有的现代ATP选手都有lay back wrist动作，古代选手偶不知道，也没啥兴趣了
解。说轻拍重拍是相对选手身材体魄而言，对于Nadal不算重拍，对于身材体魄平庸的
业余选手可能就是重拍了。
如果解决了lay back wrist before contact和racket head speed两个瓶颈, 就有可能
打出killer forehand了。
只是切磋技术而已，无所谓派不派，new/old school哒，呵呵。 |
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K****D
发帖数: 30533 | 30 Me. Most of the impact is obsorbed by the wrist. I only have tennis
wrist. |
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c****h
发帖数: 590 | 31 Big 5 has wrist protectors that has a strip and velcro. I used it to
restrain my wrist movement when I started. |
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x*d
发帖数: 1696 | 32 If you don't use wrist (especially when you start), eastern is more natural,
western feels strange. When you start using wrist to add top spin, even a
little, for most people semi-western grip will let you feel a more natural
movement.
方 |
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h*******s
发帖数: 8454 | 33 实践帝好~
理论上二发应该是刷的一声，可是我的净是pia的一声，我搭档告诉我用麦肯罗style，
看起来也没啥帮助，网上很多视频说要假装在左耳朵后面刷上旋，一直没理解是怎么个
意思
看cc的那个二发，击球点似乎也很高啊
既然你练一发那我就问问一发的困扰，那个wrist snap真的存在么，是主观做出来的还
是放松手腕的自然结果，我觉得pronation是可以理解的，但是wrist snap是触球的时
候主动做的么，我感觉是随挥的一部分，做不做都行啊。。。 |
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d*******k
发帖数: 56 | 34 Thanks a lot for the inputs, guys.
u guys pretty much covered everything that might cause my TE and they r all
bullseye shots... - right on the point.
I'm very aware of that the way i play will cause problems but never ever
took it seriously until then.
1. been using 68+ with poly since the dawn of time
2. using arm most of the time, not enough body rotation.
3. single backhand
4. too fierce play within too short period of time
....the list goes on
I too use wrist a lot to try to get some half-... 阅读全帖 |
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b*****o
发帖数: 332 | 35 Use wrist deliberately for topspin never a good idea, I think..
topspin is more about swing path than wrist action, it should come naturally
, not forced, as some said, the right way is the easy way, if you have to
try deliberately hard for topspin, then must be something wrong..
but everyone is different, maybe you just a flat hitter, as I am a topspin
hitter, I can't do flat shots, it doesn't fell right for me no matter what I
try, so I give up... :)
all |
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b*e
发帖数: 3845 | 36 Personally I like the pronation lesson from Fuzzyyellowballs.
See the 2:30 about pronation, but don't bend your wrist as he did. I think pronation should be all arm. Wrist action should be minor. |
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z*********n
发帖数: 94654 | 37 好吧，做功课了，找到了，有定义
http://en.wikipedia.org/wiki/Forehand#Extreme-Western.2C_.22Haw
Extreme-Western, "Hawaiian"
The extreme-western or Hawaiian grip is a very extreme tennis grip where the
player places their knuckle past the 5th bevel on the tennis racket. It's
considered by some to be too extreme for tennis, as the optimal strike zone
for this grip is very high up and is suitable only for pure spin hitting.
Indeed; flattening out a shot at that height is near impossible due to wrist
constrictions,... 阅读全帖 |
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z*********n
发帖数: 94654 | 38 我已经找到定义了
他自己用的wikipedia.org的定义，按照他自己的原则，应该尽情踩他了，lol
Extreme-Western, "Hawaiian"
The extreme-western or Hawaiian grip is a very extreme tennis grip where the
player places their knuckle past the 5th bevel on the tennis racket. It's
considered by some to be too extreme for tennis, as the optimal strike zone
for this grip is very high up and is suitable only for pure spin hitting.
Indeed; flattening out a shot at that height is near impossible due to wrist
constrictions, and so this grip is suited ... 阅读全帖 |
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z*********n
发帖数: 94654 | 39 lol，模仿fakepro，标题档大字报
fakepro啥都不懂，练extreme-western都不知道，还当教练呢
http://en.wikipedia.org/wiki/Forehand#Extreme-Western.2C_.22Haw
Extreme-Western, "Hawaiian"
The extreme-western or Hawaiian grip is a very extreme tennis grip where the
player places their knuckle past the 5th bevel on the tennis racket. It's
considered by some to be too extreme for tennis, as the optimal strike zone
for this grip is very high up and is suitable only for pure spin hitting.
Indeed; flattening out a shot at that height is... 阅读全帖 |
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g*****y
发帖数: 7271 | 40 我觉得是elbow以下的小臂的调节为主，上臂也参与一部分。wrist最主要是
让拍头跟在手后面，当然拍头一般也会低于wrist。
感觉drop主要是靠gravity（手给的支撑力小于拍重），而不需要加力把
拍子往下挥（drop 加速度大于重力加速度）。 |
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J****0
发帖数: 2400 | 41 Windshield is to pronate your forearm. Wrist should be relatively still
during contact.
This guy tells you to snap your wrist to wrap racquet face around ball
during contact. So it's different.
Plus, even windshield is not for every amateur player.
Go watching this guy hitting wall on youtube. I really don't think he is a
qualified tennis coach. |
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K****D
发帖数: 30533 | 42 偶小学垒球从未达标过。Wrist snap那一下根本不会。比发球的wrist snap
难控制多了。 |
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U******u
发帖数: 5829 | 43
53或54磅, 没啥感觉. 不过俺基本不动手腕
this is the key.
I am worring badly when I saw these guys claim their wrist pain.......
damned, I just post a ke-pu (med-sci-edu) on preventing wrist injury,
someone became my example and patients lal.......
u don't read my post seriously? u got injury!!! hehehehe...... |
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b*********s
发帖数: 6757 | 44 Ok, i'll just try my best to describe the stroke. For now pick a stance you
are most comfortable for now, close, open, semi-open, if you dont' know what
they are, google it.
1. put the racquet on the ground, and pick it up at the end of the handle,
that should be your semi-western grip
2. get your shoulder perpendicular to the net; raise your elbow, slightly
bend, upper arm away from the body about 90 degrees, flick your wrist a
slightly up so your racquet will be perpendicular to the ground an... 阅读全帖 |
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b*********s
发帖数: 6757 | 45 Close stance is fine for approach shot.
But if you were to practice mini tennis, I would recommend you to do
whatever you do on the baseline. Full swing, full turn, open stance, start
with just super loose wrist, you can add in the wrist snap when you are
warmed. When you get better at it, you can ask your coach to feed you the
balls with slightly backspin (that's even harder than your ball machine's
feeds). If you can do those, then you have a good topspin shot. :) |
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c*******n
发帖数: 1769 | 46 He uses a lot of body rotation, you can ask
tennisfan to testify.
His forehand mainly takes the wrist
snap away, so not much hitting through, pure top spin,
so every ball looks high and with a lot of spin, like moon
ball, but non-pro level, this type of balls are more
difficult to return especially from backhand side. And
by doing that, he does not needs to have a C loop for setup,
his wrist is almost locked when his body turn, therefore looks
very different, but setup is so much shorter, hi... 阅读全帖 |
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b*e
发帖数: 3845 | 47 Wrist support has very little use.
You have to do both of below:
1. Change your form so that you don't use too much wrist
2. Use a more flexible racquet
3. Do not use Poly such as luxilon. |
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b*****i
发帖数: 318 | 48 lock your wrist when you are hitting balls... in other words, not wrist
movement when hitting balls |
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z*********n
发帖数: 94654 | 49 pronation, wrist snap都英文，干脆用中文好了
pronation是转腕，wrist snap是扣腕？
Under |
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K****D
发帖数: 30533 | 50 That is pronation, and that has nothing to do with wrist. It's the
rotation of the forearm.
If you grap under your right wrist using your left hand, you won't be able
to pronate any more, which proves it's purely a forearm rotation. |
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