Clubhead Speed

When we talk about us­ing the ground in the golf swing, we're re­fer­ring to the golfer's abil­ity to use ver­ti­cal and hor­i­zon­tal ground re­ac­tion forces to pro­duce ro­ta­tional force, or torque.

New Zealand Golf Magazine - - PGA OF NZ -

This is a great drill to help achieve greater clubhead speed for longer shots. All you need is a tennis ball cut in half and placed un­der the ball of the left foot, as shown in the pic­tures.

To pro­duce speed, the golfer must trans­fer force to the club (since ac­cel­er­a­tion is nec­es­sary to pro­duce speed, force is nec­es­sary to pro­duce ac­cel­er­a­tion).

This force is trans­ferred through what is of­ten re­ferred to as the "ki­netic chain", mean­ing it is trans­ferred through the linked move­ment of dif­fer­ent body seg­ments. The move­ments are ini­ti­ated in a spe­cific se­quence, be­gin­ning with the seg­ments fur­thest away from the club, the feet and legs, and grad­u­ally pro­gress­ing through the hips, trunk, shoul­ders, and arms be­fore end­ing with the seg­ments clos­est to the club, the wrists and hands. Due to the ro­ta­tional move­ment of the golf swing, the abil­ity to pro­duce torque at the feet (press­ing down into the tennis ball to start the down­swing) for sub­se­quent trans­fer is es­sen­tial for the golfer, with greater torque gen­er­ally re­sult­ing in greater clubhead speed.

Nat­u­rally, the force must come from some­where, which is where ground re­ac­tion forces be­come im­por­tant. To pro­duce the nec­es­sary force for the swing the golfer needs to work against an ex­ter­nal re­sis­tance, so the pri­mary means of gen­er­at­ing large forces at the feet is by press­ing against the ground.

If there is no ex­ter­nal re­sis­tance, the golfer is un­able to add force to the sys­tem and con­se­quently there is no to­tal change in move­ment. Imag­ine per­form­ing a golf swing on ice (or in the air). With no re­sis­tance at the feet, ro­tat­ing the up­per body to­ward the trail foot in the back­swing would re­sult in the lower body ro­tat­ing to­ward the lead foot, so that there is no to­tal change in move­ment (the two move­ments in op­po­site di­rec­tions can­cel each other out).

Sim­i­larly, ro­tat­ing the up­per body to­ward the lead foot in the down­swing would re­sult in the lower body ro­tat­ing to­ward the trail foot. In short, with­out the abil­ity to pro­duce torque at the feet the golfer would lose con­trol over both the mag­ni­tude and the di­rec­tion of hip ro­ta­tion as well as its re­la­tion to shoul­der ro­ta­tion, which are in­stru­men­tal to the swing.

Newspapers in English

Newspapers from New Zealand

© PressReader. All rights reserved.