Dissertations and Theses @ UNI


Open Access Thesis


Pitching (Softball);


The purpose of this study was to determine differences in stride length and ball velocity which occur as a result of changes in the stride angle in the underarm fastball pitch. All subjects were female collegiate level softball pitchers who pitched windmill style. Each pitcher's preferred stride angle, stride length, and ball velocity were recorded. Stride lengths and ball velocities for predetermined stride angles were then recorded. An artificial environment was designed with a grid marked to measure stride length and stride angle. A radar gun was used to measure ball velocity. A repeated measures ANOVA was used to calculate the significance of any differences. Along with the phases of the windmill pitching motion the researcher discussed stride angle, stride length, the development of velocity, and the transferring of angular momentum. In softball pitching velocity is created through the sequential movements of body segments. Literature findings acknowledge a longer stride length and smaller stride angle position the body to maximize the sequential transfer of momentum. Maximizing the sequential transfer of momentum should increase the velocity imparted to the pitched ball. Based on the statistical findings for this project it was concluded that for these three subjects altering the angle of their stride had no significant effect on stride length and ball velocity. Statistically the null hypothesis for these variables failed to be rejected.

Year of Submission


Degree Name

Master of Arts


School of Health, Physical Education, and Leisure Services

First Advisor

Nancy Hamilton

Second Advisor

Wanda Green

Third Advisor

Carol Phillips


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Date Original


Object Description

1 PDF file (49 leaves)



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