Three methods of beginning the downswing kinematic sequence are explained; they are: Stretching: Proximal segment precedes the distal segment, stretching the muscles, putting them in eccentric contraction hence providing more force for later in the downswing. Riding: Proximal and distal segment turn at the same speed in the downswing, the muscles are in isometric … [Read more...]
How to Flip Fast using Conservation of Angular Momentum
I am currently teaching BIO 385 Sport and Exercise Biomechanics at National University in Carlsbad California. It’s an online course and we have a weekly discussion question. Last week it was on angular momentum. Here’s the question: The total angular momentum of a diver changes from zero to some high value during the takeoff phase. Miller and Munro (1985) reported that Greg … [Read more...]
15 Minutes of Biofeedback Training improves the Kinematic Sequence
I recently captured the swings of a young female playing professional on the AMM3D golf full-body motion capture system using TPI 3D analysis. She had some issues with the kinematic sequence peaking order, it was not optimal; her thorax was peaking before her pelvis. I noticed from the graphs that she had both a little excessive sway in the backswing and a reverse spine angle … [Read more...]