College of Health Sciences & Human Performance

Date of Award

Fall 2016

Document Type


Degree Name

Master of Science (MS)



First Advisor

Robyn Braun, Ph.D.

Second Advisor

James A. Eldridge, Ed.D.

Third Advisor

Richard Lloyd, Ed.D.


The purpose of the present study was to incorporate the Theory of Reasoned Action into the examination of Division 11 collegiate athletes and the consumption of dietary supplements. The areas that were analyzed consisted of gender differences and sport differences based on the three subscales of behavioral intentions, attitudes toward behavior, and subjective norms in the SPAADSU (Perko, 1999). Results revealed that males scored significantly lower than females on the subscales of attitude towards behavior and subjective norms. Males were more likely to agree with the questions associated with attitude towards behavior and subjective norms. Significant differences among the sports with 10 or more participants in the present study showed that women’s basketball scored higher on behavioral intentions than women’s softball and men’s football. On the subscale of attitude towards behavior, women’s basketball and women’s volleyball both scored higher than men’s baseball. Women’s basketball scored higher than women’s softball and men’s football; and women’s volleyball scored higher than women’s softball. On the subscale of subjective norms, results showed that women’s basketball scored higher compared to women’s softball. Information from the present study may be useful for healthcare professionals and/or practitioners because it will give a better understanding for the thought processes behind an athlete’s use of dietary supplements.



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