Ground Reactive Forces and "Jumping" for Power

[iacas]

How much was your lead foot flared out / angled relative to the target line?

You asked a guy a question who last logged in in June, 2013 about something he posted in 2010.

[chipandcharge]

Am I interpreting "jumping" correctly in my interpretation that it is a coordinated movement where the club head is moving on one arc, the left shoulder is moving upward and to the left on another arc, and the hands are moving on a third arc, all coordinated so that the club face is positioned properly to contact the ball square? It seems that the three arcs can be treated as independent variables even though the hands are connected to the shoulders and the club head is connected to the hands.  I'm fairly sure that we aren't supposed to be thinking about all things as we swing, especially if my thoughts are wrong, but it seems to indicate the level of difficulty of this "jumping."

[mvmac]

Am I interpreting "jumping" correctly in my interpretation that it is a coordinated movement where the club head is moving on one arc, the left shoulder is moving upward and to the left on another arc, and the hands are moving on a third arc, all coordinated so that the club face is positioned properly to contact the ball square?

Jumping is just the golfer extending the legs and hip on the downswing/into the followthrough.

At A5 (left pic) the golfer is in the process of transferring his lower body forward. The lead knee is flexed and has moved forward. By A6 the lead hip and knee are often slightly forward of the lead ankle. In a good golf swing both knees will return to roughly the same flexion at A6 that they had at address. From there the golfer can explode upwards by extending their knees (note the change in the lead knee below). The golfer extends or “jumps” for power and to get the club out of the ground.

I'm fairly sure that we aren't supposed to be thinking about all things as we swing, especially if my thoughts are wrong, but it seems to indicate the level of difficulty of this "jumping."

Some golfers may have to think about it while other don't. Every golfer has their own pieces to work on and their own feels.

[Ernest Jones]

I'm in no position to tell anyone how to do anything in the golf swing so this is purely anecdotal. I don't really feel this piece as "jumping" per say, I "feel" like my left side is as tall as possible into and through impact. Left shoulder is raised, left side is extended or stretched, LOTS (and I mean LOTS) of pressure on my left foot. It's like from transition onwards I am trying expand my left side as much as possible, foot pushes down hard, lead shoulder pushes up and back. Everything else just gets dragged along to followthrough. When I really nail it, it almost feels like my trail foot is momentarily weightless and sometimes it will even slide towards the target a little if I'm really exaggerating my feels.

[deason]

Saw this relevant to GRF and a bit of fun [video]https://www.youtube.com/watch?v=33gxccY_FzU[/video] This section is becoming the last piece of my swing I need to get...solid weight transfer without spinning hips and then of course the push up. In the DS do you need to resist the left hip and turn or is the correct move to post weight on the left then with increasing force get the left hip going upwards? I found today on the range my ball flight was low as anything...is this related to not having the upwards move? Would I be right in saying that the back issues of tiger has been due to the left leg being too stable in his BS and his squat was imposing too much pressure in the return DS?

[mvmac]

In the DS do you need to resist the left hip and turn or is the correct move to post weight on the left then with increasing force get the left hip going upwards?

The hips rotate as they transfer forward, w e use the term “linear along a circle”. How you might feel it, I can't say for sure. Just going by your handicap, I would focus on feeling "heavier" under that left foot, allow that left knee to flex down and forward.

I found today on the range my ball flight was low as anything...is this related to not having the upwards move?

Could be, without seeing your swing it's tough to say for sure. I would first focus on what I recommended above.

Would I be right in saying that the back issues of tiger has been due to the left leg being too stable in his BS and his squat was imposing too much pressure in the return DS?

I don't think so, there are plenty of players that "squat" and lower on the downswing.

[Ernest Jones]

I would focus on feeling "heavier" under that left foot, allow that left knee to flex down and forward.

This is good stuff. Like a secret sauce, makes everything better.

[deason]

Ha, been a while since I updated my profile...index is a little lower now. Thanks for the input.

Excellent thread going here. I like how it isn't a bloodbath like other forums.

[mvmac]

Ha, been a while since I updated my profile...index is a little lower now. Thanks for the input.

Excellent thread going here. I like how it isn't a bloodbath like other forums.

Thanks, feel free to start a swing thread of your own. Good to hear about the handicap.

http://thesandtrap.com/f/4180/member-swings

[chipandcharge]

I guess the only way to find out if I have the degree of coordination required to accomplish this jumping successfully is try it.  It will be an interesting experiment.

[mvmac]

I guess the only way to find out if I have the degree of coordination required to accomplish this jumping successfully is try it.  It will be an interesting experiment.

I would suggest just focusing on your priority piece for now.

[chipandcharge]

Thank you for bringing be back to my reality, or focus as you wrote.  Until I read the post about jumping and got intrigued by the subject, I was actually fully involved in the process of learning how to swing the golf club with impaired vision, where I lost some  ability to determine distances in 3D space.  The ball isn't where my eyes tell me it is.  I have been advised by several local teaching pros to try to learn golf like a blind person.  Quite a task.  Some good is coming out of it, though.  I'm learning this that I paid little attention to in the past.

[deason]

Thanks, feel free to start a swing thread of your own. Good to hear about the handicap.

http://thesandtrap.com/f/4180/member-swings

Yes...just done this!

[dchoye]

Interesting thread. I have seen Lisa longball and some long drive specialist "leap" off the ground with feet off the ground Some long drivers "push" off the ground with feet still touching the ground