A couple of days ago, I got an email from a student named Andrew that really got me thinking.
“Hey Randy, I’ve started back throwing and I was looking for some help on the role of the glutes in the delivery. I understand a glute load allows for stabilization of the trunk and can create a bit more ground reaction force, but I’ve also seen the EMG study where they claim that GRF in the drive foot isn’t as crucial. I was wondering if you could point me to some literature or elaborate yourself on the role of the glutes. It’s very difficult for me to take full advantage of mechanical concepts unless I understand the “why” and what goal is attempting to be achieved. Thanks Randy!”