The wrist can rotate independently around two orthogonal axes. That’s why you ought to be more specific.
If we use popular semiwestern/western grip in case of TS FH we should release the wrist ulnar/radial deviation and keep wrist flexion/extension locked. See also http://tt.tennis-warehouse.com/showthread.php?p=6013209#post6013209.
This is true in case of semiwestern/western TS FH. That’s why wrist flexion/extension axis of rotation has to be locked, but wrist ulnar/radial deviation can be unlocked.
It seems that this message is contrary to your previous post, right?
IMO, the best FH grip is a hummer FH grip. This grip allows you to use a racket like a carpenter uses a hammer
I believe carpenter keeps wrist extension/flexion more or less locked and wrist radial/ulnar virtually unlocked.
There are a lot of players who use this approach very successfully, see please picture.
All of them have to keep wrist flexion in relatively stable position, otherwise they hit ball into sky. But, all of them can use wrist radial to ulnar deviation (cautiously) to increase speed of the ball.
There are also a lot of players who don’t use this technique, but usually their FH wrist actions are much more complicated.
I’m very bad with English. Maybe you can suggest anything better?That's a new one - where's Limp when you need him
I extracted 3 frames from your video http://www.youtube.com/watch?v=_uKqeCWaPWQ
....How you hold a hammer, depends on what you plan on doing with it. Here is a "hammer grip" with a tight angle.
This is how I would hold a hammer if I really had to pound hard.
Whereas I would use a larger angle (as in your picture) if I were doing light tapping. Of course, instead of stock pictures, we should be taking screen shots of actual carpenters swinging a hammer, but that takes time.
This is the best illustration to proper particular tennis term.
:-?
Many years ago I bought very big English dictionary and I’ve never used it. This will be my first try.
Because the racquet practically is always behind the wrist (force), there is no push stroke.
This is clearly the push.
Sorry, I was wrong and I corrected my previous post! Thank you!!!
There is picture, which I hope clarifies meaning of “pull” and “push”.
The wrist/hand transfers forces created by different body parts to the racquet-object. There are also motion depended forces. So, it’s not very simple.:shock:
I extracted 3 frames from your video http://www.youtube.com/watch?v=_uKqeCWaPWQ
Figure1. Djokovic hard topspin forehand
Djokovic hits hard TS FH from baseline. That’s why there should be significant wrist deviations actions.
In fig. 1.1 the angle between the racket long axis and axis of the forearm (ϕ) is around 90°.
In fig. 1.2 ϕ= 45°, thus the wrist moved from maximum wrist radial to medium wrist ulnar deviation.
In fig 1.3 the forearm and long axis of the racquet form straight line. Therefore the wrist ulnar deviation reached its maximum and ϕ= 0°. The racquet rotates around axis of wrist deviation constantly from frame fig. 1.1 to fig. 1.3.
There is another picture, where Djokovic hits hard flat FH.
Figure2. Djokovic hard flat forehand
Once again, the racquet rotates (around 90°) from maximum wrist radial to maximum wrist ulnar deviation.
Both these stroke has nothing to do with WW forehand. If you want to hit hard, never use WW FH.
It took me around 100 posts to convince you that there are a lot of wrist deviations and a little wrist extension/flexion actions. Thus, wrist radial – ulnar deviation should be unlocked, but wrist extension – flexion have to be partially locked during forward swing.
It seems the most tt members have never used any hummer. So, carpenter hammer FH approach is not working. Maybe you (or someone else) can recommend a different visual approach/analogy.
I have the same opinion. Current definitions of the grips are absolutely misleading. Now almost everyone uses very thin racquet handle, but they have different palm sizes. So, it is absolutely impossible to define grips by using finger knuckles and palm hills placement on different bevels. Maybe we should go back to “V” definition.
In order to apply these modern instructions, we have to know exactly the optimal ratio between the size of the handle and the palm of the particular person. But, nobody knows that!?
on what bevel should be index finger’s knuckle in case of continental grip?For example, if diameter of the handle is equal to the diameter of pen
If you have pen size stick, I think, for continental grip you put index finger on bevel 8 (not on bevel 1 as usual). Very little girl maybe should put finger on bevel 6 and so on. Thus, we have unique definitions of the grips for different sticks and different persons. These definitions are function with three independent variables:
If you have pen size stick, I think, for continental grip you put index finger on bevel 8 (not on bevel 1 as usual). Very little girl maybe should put finger on bevel 6 and so on. Thus, we have unique definitions of the grips for different sticks and different persons. These definitions are function with three independent variables:
1. Type of grip.
2. Size of palm.
3. Diameter of stick.
That’s why, your definition “for any size of stick the underlying biomechanical principle is the index finger usually along with thumb is the primary control site of hand” is not practical for general application. Are you able to explain clearly, how to use this procedure?
I think “V” would be much better.
If you have pen size stick, I think, for continental grip you put index finger on bevel 8 (not on bevel 1 as usual). Very little girl maybe should put finger on bevel 6 and so on. Thus, we have unique definitions of the grips for different sticks and different persons. These definitions are function with three independent variables:
1. Type of grip.
2. Size of palm.
3. Diameter of stick.
That’s why, your definition “for any size of stick the underlying biomechanical principle is the index finger usually along with thumb is the primary control site of hand” is not practical for general application. Are you able to explain clearly, how to use this procedure?
I think “V” would be much better.
You really should learn something about vectors!!! It is not very big deal.
