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Post by imperfectgolfer on Jan 10, 2013 14:13:55 GMT -5
See this Jeffy forum thread - jeffygolf.com/showthread.php?564-Just-awesome! Jeffy posted this photo of Kelley at impact. Jeffy thinks that her alignment at impact is just awesome! I agree - but I think that her alignment at ~P7.15 is even more awesome!!! Note that she still has a FLW and intact LAFW (despite no change in the degree of hip rotation through impact). Jeff.
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Post by imperfectgolfer on Jan 11, 2013 0:00:24 GMT -5
What I find particularly awesome is KM's Phantom camera. I think that it proves that very slow motion video is an enormously useful tool in studying golf swing biomechanics. I cannot understand why guys (like Tapio and cwdlaw223) believe that one can get more information from 3-D graphs measured at 500 frames/second compared to the Phantom camera, which generates 10,000-100,000 frames/second. Here are some examples of how clearly the Phantom camera demonstrates golf swing biomechanics/mechanics. 1) Release of PA#3. Image 1 is at P6.5 - note how the back of her FLW is angled back about 45 degrees even though her hands have reached impact. She still has to perform a PA#3 release action to square the clubface by impact. Note how her clubface closes between P6.5 and impact - due to the release of PA#3. One can clearly see what is happening biomechanically during the release of PA#3. Note that her left elbow pit rotates counterclockwise and that is due to the combination of left shoulder socket motion inside-left (secondary to a counterclockwise upper torso rotation) + some external rotation of the left humerus. Note how her left forearm supinates between P6.7 and P7 - which can be discerned by looking at the radial border of her left lower forearm about 1" above her left wrist relative to the left antecubital fossa. 2) Maintenance of an intact LAFW between P7 and P9. perfectgolfswingreview.net/KellyIntactLAFW.jpg [/img] Image 1 shows that she still has a FLW/intact LAFW at P7.4 and there is no post-impact flipping. More amazingly, note that she still has a FLW at P8 (image 2) and P9 (image 3). She is the first golfer who I have seen maintain a FLW/intact LAFW all the way from P4 to to P9, and she never bends her left wrist at any time during her downswing and followthrough. She is a poster-child example of how one can play golf with a FLW/intact LAFW. Watch the video at the slow recorded speed and note other observations. 1) She has zero lateral bend. 2) She stalls her pelvis at impact, and that biomechnaical phenomenon doesn't cause flipping. She can still maintain a FLW/intact LAFW because she is continuing to move her left arm/FLW fast through the impact zone from P7 to P8+. 3) Note how her right wrist straightens after impact - without bending the left wrist because it happens when she is rolling her left wrist counterclockwise during her full-roll swivel action. Note how her left forearm supinates during this time period - allowing her left wrist to remain flat in the presence of a pronating right forearm that causes her right palm to rotate over the supinating left hand. Jeff.
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Post by gmbtempe on Jan 11, 2013 10:55:31 GMT -5
Why is she able to do this? Just natural ability?
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Post by imperfectgolfer on Jan 11, 2013 11:19:57 GMT -5
As I stated in the other thread - maintaining a FLW/intact LAFW through the impact zone between P7 to P7.5 is secondary to the fact that one is focused on driving the FLW forward through impact, and not focused on simply getting the clubhead to the ball.
To maintain a FLW from P7.5 to P9 requires excellent timing and a lot of flexibility/coordination and an excellent finish swivel technique. It looks "nice" but it doesn't matter from a ball flight perspective - because maintaining an intact LAFW/FLW to P7.3 is all that is needed to ensure a stable clubface through the immediate impact zone.
Jeff.
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