m*****r
发帖数: 3822 | 1 I don't think wrist is the key diffence between tennis and tt. In
tt you can make strong spin with fixed wrist. That's all about your
swing speed. Using wrist is high-end technique for both tennis and tt.
the key difference is you can not brush too much in tennis. In tt language
you can hit 加转弧圈球 in tt but for tennis only 前冲弧圈球 is possible.
That's because you can not benefit much from strong spin in tennis. The
speed is more important.
unless
do
generate |
|
K****D
发帖数: 30533 | 2 ☆─────────────────────────────────────☆
Goethe (Von Goethe) 于 (Fri Sep 4 11:18:16 2009, 美东) 提到:
尤其切削的时候
不知道是不是我的动作不标准才导致手腕受伤的？
☆─────────────────────────────────────☆
WSN (天行健) 于 (Fri Sep 4 11:23:12 2009, 美东) 提到:
Slicing backhand should not hurt you wrist unless your wrist is too loose.
☆─────────────────────────────────────☆
Yoss (...but we still have the radio) 于 (Fri Sep 4 11:28:12 2009, 美东) 提到:
move your shoulder more to do the slice and use less wrist... You shouldn't
rea |
|
K****D
发帖数: 30533 | 3 I don't protect it, my wrist just grows stronger by itself after
numerous injuries and recoveries.
Also, it's not too much worth it to correct it, because once you
protect your wrist, all the impact will go to your elbow instead.
i.e., you will either get tennis elbow or tennis wrist anyway,
hehe. |
|
b*****t
发帖数: 758 | 4 Agree with this. The right approach is probably to reduce tennis activity
and increase strengthening execises. When your wrist gets injured, it does
not mean your other body parts are good for tennis, it just means that your
wrist is relatively weaker than other body parts, and so it breaks first. If
you find a way to add support to your wrist, your second weakest part will
break. When injured, just take a break. |
|
c***t
发帖数: 1216 | 5 I am wondering if he is really using the wrist a lot. hard to tell from the
clip.
anyway i can not adapt the wrist club way, not after I've suffered the wrist
pain. |
|
a*****3
发帖数: 10373 | 6 I am vely vely sure that if you continue to focus on any so-called wrist
action, you WON'T get improved. Just let the wrist go, relax the wrist...
just focus on the big thing, like footwork, arm/shoulder/body preparation/
rotation, follow through... |
|
b*****t
发帖数: 758 | 7 Yes. But it is tricky: do not use the wrist snap to muscle the ball. Instead
, you should relax the wrist and make the wrist snap a nature extension of
the racket swing motion. |
|
a*m
发帖数: 6253 | 8 I think it is very good yah. It served the purpose you want to try:
The pronation did show up. And ball is kicked up.
The thing is still the body motion: you are not hit up or come up to hit...
Your arm is not whipped out enough, maybe too much attention goes to wrist?.
.. From the wrist snap, it is there.
Watch the slow motion for Roger in your fav list. I feel the most different
is he is up to the ball, but you are only snap your wrist and the contact
point is a little low. Your body is not up |
|
|
M*****l
发帖数: 334 | 9 When hitting forehand with "double bend", do you bend your wrist all the way
back or 90% back or 80% back or ......
I've tried it several times now and I feel my wrist is sore. I wonder if I
am hurting my wrist by doing this double bend.
Any ideas? What is the right way to do it?
Thanks! |
|
r******n
发帖数: 1665 | 10 AK did lay his wrist back.
To lay the wrist back is the cure not the goal while to gain high racquet
head speed is the goal
To lay the wrist back is to
allow the shoulder and legs to drive the arm through the shot. |
|
w******n
发帖数: 13172 | 11 pronation不是wrist action而是forearm action。 发球时的wrist action是snap the
wrist |
|
a*****0
发帖数: 6788 | 12 no wrist band can prevent you from hurting yourself. Only YOU can do that.
Start with slowly fed balls, get the grip right, get the swing motion right
, give your wrist time to build up strength over a month or two. A small
dumb bell may help get your wrist stronger.
Many videos on youtube can help you understand what a "correct" swing is. |
|
b*****o
发帖数: 332 | 13 就是对的了， Double bend morden forehand， elbow bend + wrist bend, better control!
Wrist bend until point of contact with ball, another benefit is that you won't get TE if you play this way, as elbow and wrist do not get stressed that much, if you use your leg and core strength to generate power, after a long game, your arm and elbow won't feel a thing, it is your core and leg get tired and next day you will have very sore leg... |
|
h**********m
发帖数: 87 | 14 i've had tennis elbow for 6 months and it is recovering slowly. here are
some tips to share:
1) the root causes of my t.e. were a) the combination of poly string + one
handed backhand, and b) wrist whip. in particular, if the temperature is low
, poly string can become really stiff.
2) i used wrist whip to generate extra spin and acceleration, and that,
according to my coach, can put stress on elbow ligament more than anything
3) with rest, tennis elbow usually heals by itself. a faster and sure... 阅读全帖 |
|
K****D
发帖数: 30533 | 15 偶个人的体会是wrist whip是降低tennis elbow的最佳途径，和你教练
说的正好相反。Wrist whip了，大多数shock都被wrist吸收，很容易得
网球腕，但是elbow却得到了保护。
偶从来没有因为打网球得过TE，手腕倒是受伤过n次。
low
to |
|
b*********s
发帖数: 6757 | 16 Nothing special, just the usual, semi-western grip, racquet up during the
prep, loose wrist, drop racquet head, contact in the front, windshield wiper
etc.
I think the hardest part is probably loose wrist and drop racquet head. Ppl
tend to cut off the swing path and hit the ball. You can try to stay on the
baseline, drop a ball, let it bounce twice or even three times then hit it.
Because the ball is low, you will be forced to drop the racquet head.
Because the ball has no pace and low, you will... 阅读全帖 |
|
U******u
发帖数: 5829 | 17 only use forearm play caused tennis elbow!!!
only use wrist play caused wrist pain and severe one: no more strength to
use it and give up tennis......
so I'd said, lock wrist, forearm streigh and power generated from turn hip,
turn body and move arm by rotate should join...... |
|
|
|
|
b*********s
发帖数: 6757 | 21 呵呵， 我觉得你的问题不是和我相反， 你的问题是还停留在我的"弯路"中。 =）
没见过你volley, 但要我说你的问题不是在lock wrist, 你的问题可能是盯球不够，
出拍过早， 真正contact 时你只能under cut. 所以说不是你削太多， 而是你削太平
。你该注意的是盯球， hold 住，看准了再出拍。 你现在死劲的lock wrist也会有"好
"的效果， 因为当你死劲lock wrist时， 你会tight, 这个tight会造成delay (same
as hold住), 让你感觉到problem solved, 但might not be the best way for your
future growth. |
|
b*********s
发帖数: 6757 | 22 图1我会建议让大臂和身体保持90度左右角度， 你这里基本45度或更小
图2还不错拍头有些下降，但明显放慢了很多
图3initiate 发球， 身体前挪了点， 但拍子没有动，已经完全挺下来了， 建议在这
个阶段能达到back scratch，
图4由于你没有back scratch action, 并且大臂和身体只有45度角， 你的向上偏向右
上，
图5和图4相连， 手臂过弯(loss of height)，这里你的拍子已经不那么on edge 了(
loss of acceleration in the next step)
图6 contact (lack of video quality so take my word for it lol), 你的contact
点偏低。
总结击球点偏低， 向上的"wrist snap" acceleration 不够导致发球速度和旋转下降
。 放松， 让拍子下垂，尽量不要让拍头停下来。。。不要想发猛，加力，这些都会使
你握拍握更紧， 放松抡圆向上加速all the way...
我不知道 "wrist snap"这里用的对不对， 重点是racq... 阅读全帖 |
|
b*********s
发帖数: 6757 | 23 easy to injury if your wrist is tight and really try to use your wrist to
produce spin which is actually counter productive.... key is to keep wrist
and arm loose, but it's not all that easy to do... |
|
n**u
发帖数: 768 | 24 Well. It is tricky because typically people thinks the wrist would be
moving forward (toward the ball). They are trying to add that wrist to the
swing. But I think it actually more like perpendicular to the ball, the
wrist movement is more like parallel to the net. I am not a top spin guy.
Correct me if I am wrong. |
|
K****D
发帖数: 30533 | 25 It all depends on how heavy your racket is.
Nobody other than Federer/Laver etc who has iron wrist can use wrist
using heavy racket. It's natural to hold tight. It's a way to prevent
injury.
A lot of wsn can use wrist when using a 10 oz racket. Without using it
your ball is so lack of pace or spin.
hand
contact
is
grip |
|
b*e
发帖数: 3845 | 26 I think it's the same thing. Wrist should be totally relaxed (to relax wrist
, you have to totally relax grip tension). Wrist should be totally passive.
relaxed |
|
b*e
发帖数: 3845 | 27 如果你不知道什么是lay back wrist, 这个tip 不适合你。lay back wrist一般是正手
甩鞭球拍和wrist相对小手臂的滞后。 |
|
b*e
发帖数: 3845 | 28 I agree that Konta's forehand takes less time to prepare. But I think she is
using a compact version of WTA forehand. It looks like she lays back wrist
really early during takeback, this is the most characteristic of WTA
forehand. Her follow through is windshield wiper, which is modern follow
through. With racquet face closed, she can generate more topspin, thus her
Forehand has better control than Zhang Shuai.
Interestingly Konta's 2hbh is very similar as her forehand, as she lays back
her wris... 阅读全帖 |
|
b*********s
发帖数: 6757 | 29 i see what you are saying. However, I don't think that's the key difference
between the ATP and WTA FH. The key difference is really at contact maybe
you can count the finish and swing path. Everything you do before that is
make your contact easier or cleaner.
When your racquet passed the body plane, your swing path will have a bit of
arc, WTA FH. ATP FH is more compact and direct. This a bit of arc will make
the contact more easy for drive through(slap), but lose some flick topspin.
Racquet hea... 阅读全帖 |
|
x*****n
发帖数: 3422 | 30 因为先需要有一个动作在手腕部lay back储能，然后才能释放出去形成鞭打效果。（如
果直接从slot动作开始，你只能让手腕主动硬坳拍子造成lay back stretch，但这样多
伤手腕啊。）
再强调一下，这个储能动作不主动发力，而且是wrist lay back motion (专业术语叫
wrist extension，不要按字面意思理解)，而不是手腕转动（not pronation/
supination）。如果靠手腕转动储能，受伤在所难免。（不要问我怎么知道的，哈哈。）
同意wellmoon说的：“向下的主要目的是为了下个阶段的手腕lay back，也叫pre-
stretch。”
Murray特别明显，请看下面慢动作里：
0：05 时候他的手腕并没有lay back
0：09 wrist snap之后进入slot 手腕lay back
0：10 击球点过后，windshield wiper过程中，手腕基本上没有lay back了
https://www.youtube.com/watch?v=KjyQThnMrhs |
|
b*e
发帖数: 3845 | 31 我和你的理解有所不同，ATP 正手没有wrist lock的概念。所有ATP正手都是从wrist
layback 通过击球点到wrist release 。Whether it’s 3 o’clock or not, it
doesn’t matter. 这个可以另开一贴。 |
|
发帖数: 1 | 32 Nadal 正手 3-3:15
：我和你的理解有所不同，ATP 正手没有wrist lock的概念。所有ATP正手都是从wrist
：layback 通过击球点到wrist release 。Whether it’s 3 o’clock or not, it |
|
b*e
发帖数: 3845 | 33 既有一，也有二。但是这个一需要注意，是从wrist lag, 到 wrist neutral 。如果
wrist 弓起来了，那是错误的。 |
|
x****u
发帖数: 44466 | 34 这是两个不同因素，NIH还有一篇文章做了具体分类和risk评估：
http://www.ncbi.nlm.nih.gov/pubmed/15204295
Activities with a light use of
the hands and wrists
Walking, jogging, hiking, bicycling, swimming,
aerobic dancing, and playing soccer.
Activities with a repetitive
use of the hands and wrists
Crocheting, knitting, playing the piano, gardening,
painting, playing table tennis, and playing basketball.
Activities with a strenuous
use of the hands and wrists
Bowling, woodworking, racquet sports, lifting weights,
boating, sa... 阅读全帖 |
|
l**n
发帖数: 7272 | 35 版务整理一些有用的app方便大家。如果您知道有好的app，也请回复这个帖子。我们会定期更新。
表格：
http://cssanih.org/mediawiki/index.php?title=Apple#Q.EF.BC.9A.E
List：
PairShare : Leisure : Select music on your iPhone, iPad or iPod Touch and
stream it live with another iPhone, iPad or iPod Touch, using Bluetooth.
Waze : Navigation : When you download Waze, you not only get a free traffic & navigation app, but also become part of the local driving
SketchBook：Drawing： "This drop-dead gorgeous app for digital artists packs a rich feature set in... 阅读全帖 |
|
W******o
发帖数: 480 | 36 我大概用过７，８种。 在学校工作， 要take research note； 给学生改paper
， thesis （手写mark）； 看paper。业余看大的pdf扫描书也不少。 所以经验
focusing on这些方面。
１. goodreader hd: 我买的时候还是0.99呢。 非常好用。 最大的特点是打开大的
pdf特别的快。 最近为新的ipad升级以后效果非常好。 我看（注意， 不是mark，
是看）pdf和txt首选的app。 mark功能也不错。 用起来不难， 特别是highlight
对于文字类pdf很好用。 传输文件方法很多， cloud支持很好。 唯一的缺点就是横
屏的时候不会自动两页显示。
推荐等级 5/5, 作为general reading的app很好。
2. iannotate pdf
加type note的功能很强，选各种颜色方便。 我一出来就买了。 用着mark了几篇
paper。 缺点： 手写功能不如下面说的几个app好
推荐等级： 3.5/5. 注意这个我现在用的说， 呼唤用的多的来说一说。
3. note taker HD and notab... 阅读全帖 |
|
l******p
发帖数: 71 | 37 1. A 16-year-old girl comes to the clinic because of vaginal itching for
the past 5 days. She requests that her parents not be informed about the
appointment. During the examination, she says she occasionally has
unprotected sexual intercourse and asks for oral contraceptives. Preliminary
laboratory studies show gram-negative diplococci. Which of the following is
the most appropriate next step in patient care?
A) Consult a colleague for advice about treating a minor without parental
consent
... 阅读全帖 |
|
i*********5
发帖数: 19210 | 38 My HRM was f**ked up, so I stopped using it. No HR data for my 70.3 race.
I bought the "Quick Release Kit" for my 310XT, so you can quickly change it
from your wrist band to handle bar mount.
In swim leg, the watch (without wrist band) is in my swim cap; in bike leg,
it's mounted on the handlebar; in run leg, it's mounted on my wrist band.
you can check out all the 310XT accessories here:
https://buy.garmin.com/shop/shop.do?pID=27335#accessoryTab
Garmin |
|
p********y
发帖数: 5141 | 39 要很紧很紧才行。我依然对sleeveless trisuit持保留态度，以你之前说的水温，无袖
的太冷了。我们这里和你的水温差不多,甚至大部分时间水温还高些，他们去surfing大
部分时间在水上，还是要穿fullbody wetsuit的。。。
关于wetsuit fitting这里有比较具体的介绍。
http://www.headtothehills.co.uk/articles/256-fitting-wetsuits-f
-------------------------------------------
Fitting Wetsuits for Triathlon and Open Water Swimming
Getting the perfect size wetsuit for open water swimming and triathlon is
quite an art form , plus you also need a leap of faith in how close fitting
your wetsuit needs to be, we've pu... 阅读全帖 |
|
k*********9
发帖数: 344 | 40 个人觉得现在的Smartwatch concept就不是一个可以带动市场激情的理念，本来以为
Apple会按兵不动不去趟这潭死水，seems that i am wrong。曾经发过一篇blog说过我
的想法，当时还不知道有mitbbs这东西，转发自己，求认同
At current stage of cellphone war, hardware upgrades hardly excites us
anymore, yet we are expecting (fervently) a technology leap as profound as
first iPhone. I believe such leap will be taking physical phones out of our
hands, and replace it with visual reality. Making a mini version of the
phone and strap it on the wrist fails to do either. Smart watch is not goin... 阅读全帖 |
|
w*******y
发帖数: 60932 | 41 TL;DR Version:
1. Put tin foil around wrist
2. Go to your local (or multiple *wink* ) Chipotle on Halloween (Oct. 31)
and tell them you're dressed up as a hot dog
3. Walk out with your $2.00 order.
Long Version:
Okay so in the previous years Chipotle was generous enough to give us all
free burritos on Halloween by dressing up as a burrito (*cough*tinf oil
around wrist worked*cough *), but this year, while you can probably just
put a piece of tinfoil around your wrist and say you're a hot dog ... 阅读全帖 |
|
|
G*********a
发帖数: 1080 | 43 来自主题: _PerfectMoms版 - 左手臂很痛 i got this before, both wrists.
the doctor told me need to rest the wrists, and keep it warm. my husband
bought me some sports wrist protection and i think it helped a bit too.
我以前听说新妈妈有手腕痛的
但是不知道这个手臂也会痛 |
|
p**********d
发帖数: 7918 | 44 文中提到李俊冤案和薄熙來的盟友－張海洋將軍。
http://www.nytimes.com/2012/03/27/world/asia/bo-xilais-china-cr
March 26, 2012
Crime Crackdown Adds to Scandal Surrounding Former Chinese Official
By SHARON LaFRANIERE and JONATHAN ANSFIELD
BEIJING — As Bo Xilai, the dismissed Chongqing party chief, becomes
immersed in an ever-more tangled scandal, disturbing details are emerging
about one of his best-known initiatives, a crusade against organized crime
on which he built a national reputation.
Since Mr. Bo was fired last m... 阅读全帖 |
|
m**c
发帖数: 7299 | 45 连环杀手--兰迪 史蒂芬 卡夫(Randy Steven Kraft)
姓名∶Randy Steven Kraft
外号∶记分卡杀手（Score-Card Killer）
出生日期∶1945年3月19日
现况∶在加利福尼亚州的圣昆廷州立监狱里服刑
杀人数目∶16+人,均为男性(也有人认为，受害人应至少67人)
杀人方法∶麻醉，捆绑，折磨
犯案地点∶美国加利福尼亚州(California)
杀人时期：1971年至1983年
被捕日期∶1983年5月14日
Randy Steven Kraft是一名美国连环杀手。虽然他被控谋杀了16人，但是他涉嫌谋杀了
至少67人。在1971-1983年期间，在加利福尼亚的高速公路上发生了很多命案。所有的
受害人都是年轻男子和少年，大多数受害人生前都遭受了折磨和X虐待。一些人还被焚
尸。许多受害人生前饮用了大量的酒和镇定剂。但直到1983年5月14日，Randy Steven
Kraft才被捕获。他还用密码为所有受害人编写了一个名单。在1988年，法庭判定他无
罪，但是他自己供认了所有罪行，并被判死刑，但尚未行刑。他现在还在监狱的死亡名
单上。
World... 阅读全帖 |
|
c***c
发帖数: 21374 | 46 CLINTON BODY COUNT
By: Ether Zone Staff
Here is the latest body count that we have. All of these people have been
connected with the Clintons in some form or another. We have not included
any deaths that could not be verified or connected to the Clinton scandals.
All deaths are listed chronologically by date. This list is current and
accurate to the best of our knowledge as of January 13, 1999 August 1, 2000.
Susan Coleman: Rumors were circulating in Arkansas of an affair with Bill
Clinton. She ... 阅读全帖 |
|
c******k
发帖数: 8998 | 47 http://www.wagist.com/2012/dan-linehan/was-trayvon-martin-a-dru
Was Trayvon Martin a Drug Dealer?
by Dan Linehan on March 25, 2012
Innocent victim with shooter
Above is the iconic picture we’ve been become accustomed to seeing
everywhere in the media, used to represent the recent Trayvon Martin
shooting in Sanford, Florida. From everything the public has been told,
Trayvon Martin was a fresh-faced, innocent looking teenager and the visage
of the man who shot him, George Zimmerman, is right out o... 阅读全帖 |
|
T**********e
发帖数: 29576 | 48
这张照片正式发表被ps了，但有人说完全没必要ps，另一个手表实际上是罗盘。
After taking the symbolic photo, Khaldei quickly returned to Moscow. He
further edited the image at the request of the editor-in-chief of the
Ogonyok, who noticed that Sen. Sgt. Abdulkhakim Ismailov, who is supporting
the flag-bearer was wearing two watches, which could imply he had looted one
of them.[6] Using a needle, he was able to remove the watch from the right
wrist.[1][6] He also copied the smoke in the background from another picture
to make the sc... 阅读全帖 |
|
b********n
发帖数: 38600 | 49 The thing with China is that they're pretty medieval when it comes to crimes
against any party dictates.
In the U.S., market manipulators get a slap on the wrist. In China, their
hands will be cut off at the wrists just before their executions. |
|
