Better players also attended tilt their shoulders down more steeply.
Conrad Ray, one of the generators of the study, published in the Journal of Undertaken Biomechanics, said : "All golfers want to have learned to hit the ball longer, and this study supports that speed is really a factor of relative physical structure rotation.".
Jessica Rose, senior author of the field, said golfers could learn to hit the ball further without risking harm.
It 's the question that vexes recreational golfers perhaps more any other : 'Why ca n't I hit the ball further?'.
While professionals person like Rory McIlroy and Darren Clarke over and over thump it well over 300 yards, most weekend players be unable to break 250.
Even veterans like 61-year-old Tom Watson, the five-time winner of the British Open, will regularly out-drive fitter club players half his age.
Now orthopaedic operatings surgeon claim to have pin-pointed the explanation, and say it is bushed the hips.xEOL.Freeze-frame video analysis has found that professionals person rotate their hips much more everyday cybers terrorist when swinging the club back.
This gives them much greater power and all important golf club head speed on the downturn.
Amateurs, by contrast, tend to rely more on their shoulders and arms.
She explained that wrestling the upper back overmuch, while failing to turn the hips enough, was one of the leading causes of back injury among golfers.
Researchers at Stanford University in California made their conclusions after analyzing the swings of 10 professionals and five amateurs.
On the average the pros rotated their hips by 56 degrees, relative to their shoulders, while amateurs managed about 10 levels less than that.
And while the professionals person hit the ball at an average of 79mph, the amateurs' clubhead swiftness on encroachment was approximately 65mph.