Date of Award


Document Type

Thesis and Dissertation

Degree Name

Master of Science (MS)


Department of Family and Consumer Sciences

First Advisor

Jennifer Barnes


Objective: Heat related illness is one of the leading causes of death in high school athletes.

Proper hydration strategies have been shown to decrease heat related illness in college and

professional athletes. However, limited research has been conducted on the hydration habits of

high school athletes. The increase in high school sports participation has put more athletes at

risk for dehydration. The purpose of the study is to investigate the hydration status and impact of

an educational intervention on hydration habits of high school student athletes, by assessing their

current understanding of hydration and monitoring their fluid intake, during practice. There is

limited research on hydration habits of high school non-elite athletes.

Methods: Sixteen female high school tennis players participated in this study. Data was

collected on the players pre/post practice body weight and pre/post water bottle weight, during a

pre-session, post session, and follow-up session. During the pre-session, researchers performed a

series of educational sessions on hydration for the team and coaches. Researchers assessed

hydration knowledge by giving participants replica hydration questionnaires at the beginning and

conclusion of the study. A paired-sample t-test was used to compare differences in average

weight change and percent weight change between the pre-session/post-session and presession/follow-up session. A paired-sample t-test was also used to analyze the average fluid

ounces consumed and percent change in water bottle weight between pre-session/post-session

and pre-session/follow-up session. A paired sample t-test was used to assess the differences

between the pre/post hydration questionnaire, body weight, and fluid intake.

Results: There were no significant differences in (p>0.05) between the pre-session and the postsession in regard to changes in percent body weight change or fluid intake. However, there were

significant differences (p=0.06) in percent body weight change between the pre-session

(0.00±0.50%) and the one-month follow-up session (-1.05 ±0.80%). Drinking habits during the

follow-up session did not appear to be similar to the intervention period. Significant differences

(p= 0.00) were noted between the pre-session (15.87± 6.00oz.) and follow-up session (0.00±

7.40oz.) in ounces of fluid consumed. The researchers found significant differences (p=0.00)

between the percent weight change in water bottles between the pre-session (56.87±11.40oz.)

and the follow-up session (27.25±15.17oz.). The were no significant differences between the

results of the pre/post-hydration questionnaire.

Conclusions: The findings from this study indicated that participants were more aware of their

drinking habits during the invention period. Participants had similar drinking habits and saw less

of a decrease in their post training percent body weight change in the pre-session and post

session. When researchers returned to the site to conduct their one-month follow-up session they

found that participants drinking habits did not resemble the intervention period (pre/post

session). The teams overall fluid consumption had dropped and there were greater decreases in

their post training percent body weight change. There are many factors that could have

influenced these changes in fluid consumption, but more research is needed on hydration status

and the impact of hydration education in high school student athletes.

KEYWORDS: Dehydration, Female Athletes, Weight Loss, Fluid Intake, and Heat Related



Imported from ProQuest Ortiz_ilstu_0092N_11389.pdf


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