Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2014) 13, 859 - 873

Research article
Kinetic Constrained Optimization of the Golf Swing Hub Path
Steven M. Nesbit1, , Ryan S. McGinnis2
Author Information
1 Department of Mechanical Engineering, Lafayette College, Easton, PA, USA
2 Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, USA

Steven M. Nesbit
‚úČ Department of Mechanical Engineering, Lafayette College, Easton, PA, USA
Email: nesbits@lafayette.edu
Publish Date
Received: 11-04-2014
Accepted: 25-08-2014
Published (online): 01-12-2014
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ABSTRACT

This study details an optimization of the golf swing, where the hand path and club angular trajectories are manipulated. The optimization goal was to maximize club head velocity at impact within the interaction kinetic limitations (force, torque, work, and power) of the golfer as determined through the analysis of a typical swing using a two-dimensional dynamic model. The study was applied to four subjects with diverse swing capabilities and styles. It was determined that it is possible for all subjects to increase their club head velocity at impact within their respective kinetic limitations through combined modifications to their respective hand path and club angular trajectories. The manner of the modifications, the degree of velocity improvement, the amount of kinetic reduction, and the associated kinetic limitation quantities were subject dependent. By artificially minimizing selected kinetic inputs within the optimization algorithm, it was possible to identify swing trajectory characteristics that indicated relative kinetic weaknesses of a subject. Practical implications are offered based upon the findings of the study.

Key words: Golf swing biomechanics, hand path, optimization, kinetics, kinematics


           Key Points
  • The hand path trajectory is an important characteristic of the golf swing and greatly affects club head velocity and golfer/club energy transfer.
  • It is possible to increase the energy transfer from the golfer to the club by modifying the hand path and swing trajectories without increasing the kinetic output demands on the golfer.
  • It is possible to identify relative kinetic output strengths and weakness of a golfer through assessment of the hand path and swing trajectories.
  • Increasing any one of the kinetic outputs of the golfer can potentially increase the club head velocity at impact.
  • The hand path trajectory has important influences over the club swing trajectory.
 
 
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