THE RELATIONSHIP BETWEEN GLUTEAL ACTIVITY AND PELVIC KINEMATICS DURING THE WINDMILL SOFTBALL PITCH

Abstract

Historically a number of pitch delivery methods have been used, with the windmill pitching motion becoming the most common and accepted pitch delivery method in recent years. Although millions of girls participate in softball, there are few studies investigating the mechanics of the windmill softball pitch. Thus, the purpose of this study is to quantify the activity of the gluteus maximus and gluteus medius on the dominant side; and to further determine if an increase in gluteal activity throughout each phase results in an increase of linear velocity of the pelvis at phase endpoint.