b*********s
发帖数: 6757 | 1 I'm a bit confused about pronation vs wrist-snap.... seems some ppl's
pronation is more of my definition of wrist-snap. My definition of pronation
is after the wrist-snap, your elbow stays up, wrist continue to extent
outward, and shoulder folds in a litter.
Under my definition, it's true that you have to snap your wrist if you have
a continental grip (hammer), but it is not necessary to pronate.
speed |
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n**u
发帖数: 768 | 2 呵呵。 wsn看不明白的我来解释一下。 黑岛的上旋是有刷wrist的现代上旋，加上
wrist确实转，周围里wsn确实会的不多。 绝大多数wsn wrist是lock的。 但用wrist很
容易收伤。这个要量力而行。 俺就不敢学。 My wrist is too thin! |
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b*********s
发帖数: 6757 | 3 if you have a proper stroke, you should hold it loose.
"A lot of wsn can use wrist when using a 10 oz racket."
-you shouldn't be using wrist to hit the ball anyways, power mainly comes
from legs, hips, and back. you keep wrist loose so you can transfer that
power into the shot. The tighter your grip, the more injury prone you are...
.
"Nobody other than Federer/Laver etc who has iron wrist can use wrist using
heavy racket."
-very misleading statement |
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I**b
发帖数: 12 | 4 Try these:
2> A 4-year-old girl is brought to the emergency department by her mother
because of severe wrist pain. The girl was playing with her friends in her
backyard and fell, breaking the fall with her outstretched hand. On physical
examination there is slight swelling over the dorsal aspect of the wrist. X
-ray films of the wrist are shown.
The findings are most consistent with which of the following?
A) Carpal navicular fracture
B) Cortical fracture of the radius
C) Fracture of the distal ... 阅读全帖 |
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i*********5
发帖数: 19210 | 5 http://www.dcrainmaker.com/2010/06/new-garmin-forerunner-310xt-
Pins, Wrists and Caps:
So while we may in certain circumstances be able to gather data semi-
accurately now – the bigger question is whether it’s best to use the swim
cap method or the wrist method.
First, let’s address the pins. There’s an issue on the 310XT where the
pins can pop-out using the standard orange wrist strap that comes with it.
This can be done with a moderate amount of force being exerted on the strap
itself. Shou... 阅读全帖 |
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W*N
发帖数: 1354 | 6 Actually now I think of it, it could also be the same problem.
If you want to concentrate power, the general practice is to use fast
movement of wrist so that the shuttle will move fast. However, use fast
movement of wrist often results in only moving the wrist, not the rest of
the body. So it is harder to transfer the body power to the wrist.
I think the best way is still to relax, and the transfer process is more
like transfer of potentials rather than transfer of momentum. Use leg, turn
waist |
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N******y
发帖数: 71 | 7 My wrist hurts only after I play tennis. It is not seriously hurting, just
some discomfort. I just realized that maybe I need to stretch my wrist and
shoulder a little before play. Now I am trying to warm up for a couple of
minutes before play.
I am 5.0 table tennis player, I think. So I do tend to snap wrist on
forehand. Now I am trying to lock my wrist and hit flat balls.
I hit the ball very hard. Maybe too hard sometimes. I partly use tennis as a
workout. This could be a very wrong idea. |
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a*****3
发帖数: 10373 | 8 你还是没有搞清楚.
slotting是击球前的准备,不管幅度大小,击球时wrist都不发力,更不用说用wrist来改
变方向了.
我和你争论的地方是* * 击球时 ** wrist的动作,而不是击球前后wrist的动作.你不要
整天忽悠. |
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a****n
发帖数: 4734 | 9 Body turn generates most of the speed. No doubt.
Actually following pic can explain something about my point
we can see the wrist angle changed.
with/without 弹簧 trick, the wrist angle is gonna change anyway, like a
joint.
But if imagine there is a loading wrist弹簧 at first pic, then at 2nd pic,
the the acceleration will be noticeable higher than w/o wrist弹簧.
I don't know if player really know or care all mechanics of their hitting.
Some kids hit balls like textbook but I am sure that they don't k... 阅读全帖 |
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J****0
发帖数: 2400 | 10 If you rely that much on wrist snap to accelerate then either you are very
good or you have problem with your forehand.
For changing direction, contact point is more important. And again, if you
rely on wrist snap to control your direction then either you are very good
or you have problem with your forehand.
In tennis, the power or control you get from wrist snap doesn't pay off for
the risk of ruining your wrist. |
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j**h
发帖数: 480 | 11 多谢黑岛和大马甲老大的砖，醍醐灌顶啊，我一下开窍了，我弄反了因果关系，snap
wrist 是因，pronation 是果。
我很久以前不知从哪得来的一个错误概念，说是网球和乒乓球的最大不同就是打网球不
能动腕。所以我几乎所有动作
都锁腕。前阵子ATM老大说我正反手不会用腕，我也去研究了一下，现在会一点了，果
然是ｅａｓｙ ｐｏｗｅｒ 啊。
我一早又去按黑岛说的用慢动作体会去了，第一次从自己的录像里看到了snap wrist
和pronation, 真是欣喜若狂，
赶快给各位汇报更正一下，希望新手不会我原帖的错误认识误导。
原帖录像中我确实如黑岛说的，不够放松，而且击球的swing path 不对，我是把拍面
转过
来后，垂直拍面向下拍。 所有我
想发哪个方向，我的身体就得转到面向那个方向，不跳我就不会发了。现在我发现，
wrist snap 就可以定方向，不过我才刚学会一点，还不会控制。学会了wrist snap,
我现在可以不动下身发球了。
看我的新感悟in slow motion (60 fps)，上臂的挥拍速度应该只有全速的50%~60%吧，
我基本没用力。
球很容易就过网了，... 阅读全帖 |
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b*********s
发帖数: 6757 | 12 even when you volley you need to keep your grip loose. Often you hear you
need to have a firm wrist when volley, it's actually just firm enough you
don't break your wrist as in during the contact your wrist doesn't flip back
and let the racket head fall below your wrist high. But on the scale of
loose and tight, it's still close to the loose side.
hand
contact
is
grip |
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b*e
发帖数: 3845 | 13 Although I seldom do mini tennis, I think the reason for minimum takeback is
one can feel the wrist layback at contact position (in the front). Here is
an pretty old video of Justin Henin doing mini tennis. At the very beginning
, notice her laying back wrist right away with minimum take back (especially
at 0:25, where she hold the wrist lay back position to wait for the ball).
I need to try it sometime. Even for ATP style forehander, laying wrist back
early during warmup/practice will help one ... 阅读全帖 |
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b*e
发帖数: 3845 | 14 引拍直接进入slot类似于我在另一篇说的有意识的提前wrist lay back。我觉得对于避
免late非常有帮助。一开始掌握wrist lay back的mechanism, 慢慢就学会很放松的
wrist lay back, 放松到最后wrist 并不怎么需要lay back球拍已经layback了。除了
接快速发球，另外一种适用情况是打球离身体很近的passing shot, 或者在热身是对手
打volley, 我打passing。
sock
wta |
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i****e
发帖数: 1527 | 15 我在Apple网站上搜到这个问题，如下。
Symptoms
Learn what to do if the cursor jumps or moves without the trackpad being
touched. The cursor may also act strangely when the trackpad is touched.
Resolution
The Apple Magic Trackpad and built-in trackpads on Apple portable computers
work on a principle called coupling capacitance. As your finger moves over
the surface, the trackpad evaluates the change in capacitance between two
layers of measurement electrodes built into the surface of the trackpad and
translates t... 阅读全帖 |
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p********m
发帖数: 325 | 16 Tips on Buying an Interview Suit (ZT)
The suit is the vehicle by which you create a first impression, says Norman
Fryman, former CEO of The Grief Companies and current consultant to
Bidermann, manufacturers of tailored men’s clothing. He goes on to explain
that a suit’s silhouette, drape, and color provoke a conscious thought in
the mind of the recruiter of what you are all about.
Let’s face it, a recruiter not only judges your resume and communication
skills, but will be influenced by the visu... 阅读全帖 |
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G*******e
发帖数: 219 | 17 http://news.nurse.com/apps/pbcs.dll/article?AID=2005505010320
Caution: Nerve Injuries During Venipuncture
Sue Masoorli, RN
Sunday May 1, 2005 Print Select Text Size: Comments
Share this Nurse.com Article
Share on facebook Share on twitter Share on email
Permanent damage can result
when a needle point makes
contact with a nerve.
"Nurse, I feel an electric shock going down my arm." Would this patient
complaint mean anything to you when you insert an IV catheter or draw blood?
This feeling of s... 阅读全帖 |
|
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h*******r
发帖数: 847 | 19 未来版本确有此功能，见最后一句
Tulsa-based GWACS Defense develops sniper-busting technology
Shel Jones, vice president of business development at GWACS Defense Inc. ,
wears a wrist monitor attached to a high-tech device for detecting the
source of sniper fire. SHERRY BROWN / Tulsa World
Shel Jones, vice president of business development at GWACS Defense Inc. ,
wears a wrist monitor attached to a high-tech device for detecting the
source of sniper fire. SHERRY BROWN / Tulsa World
Jonathan Turkelson, a GWACS Def... 阅读全帖 |
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g********d
发帖数: 4174 | 20 Hospital, Daughter of Gay Man Arrested in Missouri Dispute What Really
Happened
The story of a gay man in Missouri who was arrested Tuesday after he refused
to leave his husband's hospital bedside has drawn national attention, and
parties on both sides of the incident are elaborating on what they believe
took place on Tuesday.
Here's what is not in dispute:
Roger Gorley and his husband, Allen Mansell, have been in a civil union for
five years and have legal power of attorney to make medical deci... 阅读全帖 |
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b*******h
发帖数: 233 | 21 Sounds like carpel tunnel syndrome during pregnancy. My case was pretty
severe. Both hands/wrists started around week36. Wearing wrist split (
available at all drugstores) at night during sleep helps, since the split
helps your wrist stay at a neutral position. Also, when you use computer
keyboards, take frequent breaks to move and stretch your fingers.
No real treatment for this, my OB told me that CTS during pregnancy wouldn't
get better until after giving birth to the baby. My hands felt norm |
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t********m
发帖数: 18 | 22 Wrist support/ wrist protector/ wrist stabilizer
主要是限制活动，让受伤的部位得以休养生息。 |
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b*f
发帖数: 3154 | 23 I reluctantly agree with you - except that, the correctly technique will
make it much easier and more efficient to do it, and it is healthier in the
long run.
One example I observed in my kid: The shaky wrist - You may say what is the
matter? It is not a problem when you play slow passages, but when you go up
to higher levels which requires fast passages, the shaking wrist won't be
able to help keep up the speed.
Instead, you need the fingers that can play independently without involving
the wri... 阅读全帖 |
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b*f
发帖数: 3154 | 24 I reluctantly agree with you - except that, the correctly technique will
make it much easier and more efficient to do it, and it is healthier in the
long run.
One example I observed in my kid: The shaky wrist - You may say what is the
matter? It is not a problem when you play slow passages, but when you go up
to higher levels which requires fast passages, the shaking wrist won't be
able to help keep up the speed.
Instead, you need the fingers that can play independently without involving
the wri... 阅读全帖 |
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|
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n*********8
发帖数: 77 | 27 Sorry unable to input Chinese. I hurt my wrist very badly skiing yesterday,
now I can not even make simple motions
like turn my wrist. I donot think I break my bone, my the tendors must be
hurting. Anyone knows any good doctor in
Flushing? Also any over the counter medicine I can apply to my wrist?
Thanks a lot! BTW, I can read Chinese. |
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l****l
发帖数: 833 | 28 ☆─────────────────────────────────────☆
awe (new world, new start) 于 (Mon Apr 9 00:26:22 2007) 提到:
谢谢
另外，护腕英文怎么说？
我土……
☆─────────────────────────────────────☆
Riemann (曼何开心) 于 (Mon Apr 9 00:27:51 2007) 提到:
这个随便去个卖体育用品店都有
比如品牌店, nike, addidas..
或者去footlocker, sportsauthority之类的
☆─────────────────────────────────────☆
lovecountry (it is our moment, it is our age) 于 (Mon Apr 9 00:41:09 2007) 提到:
wrist supporter, wrist pad, wrist brace
☆─────────────────────────────────────☆
Ri |
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C*******h
发帖数: 6095 | 29 我的一些心得，觉得对自己还满有用滴。
１练碗力: 没事就转转哑铃 (I use 5 lbs) only twist and move ur wrist and
fingers not arm
２对墙打: better use squash racket and try to only use wrist and fingers not
arm重心要低，脚不能站死。
３让对方站网前扑球自己退后防守: 当然不是一开始就全力要控制力度这样才能有来回
。然后力度逐渐加强。u may use squash racket here too. again, wrist and
fingers not arm. 回球高度控制到恰好能让对方连续扑球就可以了。 重心要低，脚不
能站死。
４让对方杀球自己练回放和绷球（你已经在做了） |
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C*******h
发帖数: 6095 | 30 我的一些心得，觉得对自己还满有用滴。
１练碗力: 没事就转转哑铃 (I use 5 lbs) only twist and move ur wrist and
fingers not arm
２对墙打: better use squash racket and try to only use wrist and fingers not
arm重心要低，脚不能站死。
３让对方站网前扑球自己退后防守: 当然不是一开始就全力要控制力度这样才能有来回
。然后力度逐渐加强。u may use squash racket here too. again, wrist and
fingers not arm. 回球高度控制到恰好能让对方连续扑球就可以了。 重心要低，脚不
能站死。
４让对方杀球自己练回放和绷球（你已经在做了） |
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n***s
发帖数: 10056 | 31 First, don't go too fast. It could cause injury and it's hard to heal. I
have thin wrist like Sleepingbag. I always do dumbbell bench press. Recently
I progressed too fast and my left wrist got injured. I cannot do DB bench
press on heavy weights as it would kill my wrist. I had to do barbell bench
press and do it through pain. So increase weights slowly and add arm
strength training as well. |
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s***r
发帖数: 358 | 32 Yeah, I've always got the boring title :)
Wrist mobility was a big issue for me as well when I first started front
squat. I started with stretching my wrists and forearms for a couple of days
in the beginning. Then I put weight on the bar and my wrists automatically
adapted.
Though for me my weakness in front squat is the back strength. When the
weight gets heavy, my back always gives in before the leg does. |
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J*****n
发帖数: 1051 | 33 HAVRE DE GRACE, Md. (AP) -- Phil Mickelson withdrew because of a wrist
injury and flew home to San Diego for an MRI. He saw two doctors, had one
cortisone shot and decided to withdraw from his next tournament.
Michelle Wie withdrew because of a wrist injury and went to the range to hit
balls.
In fairness, at least she took a day off.
Maybe that made her left wrist feel better, but it did nothing to quell the
mounting criticism around her.
That the 17-year-old from Honolulu would walk out of the |
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ET
发帖数: 10701 | 34 i would not say it's not right, but the reality is.. it's so hard to control
your wrist, from my understanding. If you read some articles about the
wrists (left & right), they,most likely, are supposed to be kept as still as
possible.
The right forearm power makes a lot better sense than the wrists. Still, it'
s an advanced topic. believe or not. |
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F*****y
发帖数: 100 | 35 Supination (bowed left wrist) is a must-have. When I first started, I had a
ugly cupped wrist and struggled to hit 130 with 7 iron. Now, I don't have as
much supination as pros, but my left wrist is no longer cupped at impact.
The result is significant gain in distance.
needed. |
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v*****r
发帖数: 2325 | 36 is "wrist flip" good or bad? does this mean the back of wrist breaks?
from what i read, flipper is no good.
no-flipping wrist action is totally new feeling of strike ball for me... |
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v*****r
发帖数: 2325 | 37 you are right about "lag is gone" at impact. lag during late stage of downswing does not necessary means higher ball speed.
i think at impact left wrist must firm up and ahead of ball, then release. also right hand giving a slap feeling... and keep accerating.... 击球瞬间有一点向target拽球竿的感觉. if this understanding not right, welcome correction...
wrist stay relax at early stage of downswing helps to retain lag. but wrist need to firm up at impact helps maintain the pressure against shaft to ensure ener |
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r*********l
发帖数: 120 | 38 I am getting used to the interlock grip but happened to know overlap is more
common. Why is that?
Also, I used to hold the club fairly tight, or in high pressure. I knew it
sounds incorrect. How tight you guys hold the club? Any difference between
the hands?
Your wrists is supposed to be hinged on the top of backswing. What about
downswing? Should the wrists remind flex to be able to rotate by the
movement of club head? Or the wrists should be in control of the club all
the way to follow-throug |
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d*******r
发帖数: 590 | 39 看看这篇纽约时报的文章摘要：
......
Not to add insult to injury, but if you're a hacker with a slice, you also
are more likely to develop an elbow or wrist problem. Foster said that those
injuries were often the byproduct of a swing in which the wrists release
prematurely. Start the downswing with your wrists instead of your hips and
shoulders, and not only will you be looking for that banana-ball shot in the
woods, but you might also be trying to rub the tendinitis out of your
leading elbow. Other observatio |
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v*****r
发帖数: 2325 | 40 最近您的POST大多都打过GREEN.
技术上是什么提高？ 有拍SWING VIDEO 吗
one technique to increase coil is said to start to make transition from
backswing to downswing before set wrist at the top)
最近我觉得我终于能改动作了, 可能是 overhaul.. (from foot work, left hip move
, swing path, wrist pronation/supination)
其实有很多INSTRUCTOR 和PRO都提到IMPACT HAND POSITION (LEFT HAND BOW), but it
is an effect of proper left wrist supination. (hogan's fundamental)..
http://www.aroundhawaii.com/lifestyle/health_and_fitness/2007-11_tigers_impact_position |
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v***s
发帖数: 4031 | 41 你这用不用手腕的意思很含糊。我的理解，你讲的是击球时手腕的反转 wrist
releasing， wrist action。
菲尔的hinge&hold的意思是往后挥时，手腕和手臂立即形成固定的角度，继续向后挥，
这个角度一直保持到击球后，没有wrist releasing，Release靠的是肩膀和上身的转开
，身体带动手臂和手，手带动球杆，手在前，杆头拖后。
我chipping时，手腕没有加力，完全没有手腕的动作，唯一的手腕动作，偶尔可能会在
结束时，有个杆头指向目标的姿势。 |
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f*t
发帖数: 382 | 42 First, you do have a early release problem. from the picture, you club is
paralle while you shoulder/body still facing back instead of front. I assume
your distance is suffering. early release is a problem everybody will have
in early stage of the game. do not worry, it's fixable.
Here I just summaize my experience.
1. Make sure to hinge your wrist on back swing. To you now, hinge the wrist
the earlier the better on you back swing.
2. make sure your feel you wrist fully hinged on top of the back... 阅读全帖 |
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ET
发帖数: 10701 | 43 I don't think there is any useful existing yet.
The point is how you can measure?
I know a guys selling his app $9.99 by capturing the contact moment of swing
. -- this needs high speed camera, and some math involved.
My approach is , actually, measuring how fast you can flip your wrist. Since
we are talking about "your hands are actually mimic the club face, with the
help of your arm." So my approach is making some sense.
Since we are flatting our left fore-arm with the back of our left hand (... 阅读全帖 |
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b********l
发帖数: 84 | 44 他的挥杆确实适合模仿。手腕动作还是有， 只不过相对较小。back swing wrist
hinge 迟一些。
impact release 球杆拉伸双臂很好， 显示很好的完全伸展。是我目前的挥杆参考模型。
淡化wrist hinge 距离损失不大或很小。 他的挥杆强调shoulder turn 和wide swing
arc. 击球扎实永远是长距离的保障， aggressive wrist hinge 只能用来作为extra
kick。 |
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i******e
发帖数: 91 | 45 看到大家讨论，以前看到的文章：
下面是俺使用格牢靠23碰到的问题，也是俺要把手里的G23卖掉的原因。 这毛病不是
limp wrist，也不是老生常谈的KB(kaboom)。。。
俺手里的G23是08年底买的。 以前有过一把G32，一直没发现任何问题。 格牢靠在俺眼
里一直以为是最不“敏感”的枪，也就是说，什么样的子弹都能打，从来没有FTF，FTE
等等问题(除了limp wrist以外)。 最近发现原来格牢靠的40口径的枪，有个很严重的
问题： 如果你装一个枪灯在导轨上(俺用的是Streamlight TLR1s)，就很有可能出现
failure to feed。 特点是子弹nose dive，弹头顶在弹夹前壁上，根本没举起来。
Streamlight网站上的FAQ里，有提到这个问题http://www.streamlight.com/faq/，但他们没说明白为什么，也没说清楚解决的关键。。。
格牢靠的枪用的塑料枪身，在射击中会轻微变形flex，减轻后座对手的冲击，这个我们
都知道。 但Gaston在设计这个“变形”的时候，留的tolerance公差非常小，那个变形
不能有丝毫的... 阅读全帖 |
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n****u
发帖数: 1200 | 46 没错，他的握姿是不好。
可是人家是双手握枪好不好，limp wrist一般是单手握+力量弱才会出现，你看视频上
测试limp wrist的基本上都是只用个大拇指来挡一下，连握都不握
视频里这手够粗的吧，握姿不好，枪也没怎么跳吧，要是这样还怪到limp wrist上，那
真是交流基准不同了。
天朝枪本来就是缺省使用天朝弹的，设计时根本没考虑圆头弹的问题，所以出问题很自
然。天生没有为这个目的做任何考虑。倒是津津乐道于手枪弹的破甲能力。
题？ |
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B**I
发帖数: 601 | 47 http://ezine.kungfumagazine.com/info/tournament/2010RULES_PushH
US Rules
RULES FOR TAI CHI PUSH HAND DIVISIONS
1. General Rules
a. Competitors must be over 18 years of age, have practiced Tai Chi Kung Fu
for more than 2 years, be able to show proof of coverage by a valid health
insurance policy (a valid insurance card is sufficient), and be willing to
sign the Liability Waiver. Competitors are required to follow the rules and
demonstrate courtesy to the judges and officials, the audience, and fe... 阅读全帖 |
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b**h
发帖数: 586 | 48 对初学者最有用的是带wrist pad的单板手套。这几年不知道为什么带wrist pad手套基
本找不到了，也许是因为大多数人只是第一季入门时用的着，市场不够大的缘故。你可
以买个大点的手套里面加个旱冰wrist pad也行。然后最好戴个头盔。
那些padded shorts之类觉得没什么必要，穿着也不舒服，当然要是不差钱也可以考虑
。自己注意安全，不要盲目冒险，就可以了。 |
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j****5
发帖数: 385 | 49
I was confused about palm facing afterward for a long time until ur friend
taught me similar things about wrist. He actually said something easier to
understand -- ur wrist should feel as if u r wearing a elastic wrist band,
and water does the work to position ur palm correctly.
Swim smooth also talks about palm facing afterwards. However it just says "
you should blah blah", it does not say how. |
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