Dissertations and Theses @ UNI
Availability
Open Access Thesis
Keywords
Caffeine--Physiological effect; Women college students--Health and hygiene; Academic theses;
Abstract
It is commonly believed that caffeine negatively effects hydration status by acting as a diuretic agent. However, previously reported findings on the effects of caffeine on hydration status are controversial. These studies predominantly used healthy college-aged males. Researchers have suggested that females may respond differently to caffeine than males. Some of these differences may be attributed to menstrual cycle and oral contraceptive steroid (OCS) use. The purpose of this study was to investigate whether a 365 mg dose of caffeine would alter urine output (volume) and hydration status (urine specific gravity) in college-aged females while controlling for the menstrual cycle and OCS use. Nineteen females (age= 22±2 years, height= 165.4±8.7 cm, weight= 62.3 ±9.8 kg, body fat= 24.3±5.5%) were separated into three groups based on their OCS use. The two trials (single blind random crossover) included 1) 365 mg dose of caffeine (three 12 oz cans of Mountain Dew with 200 mg of No Doz added) 2) 0 mg of caffeine (three 12 oz cans of Caffeine Free Mountain Dew). Urine volume and urine specific gravity (USG) were determined before and after the eight hour urine collection time. No significant differences were found among variables (p>0.05). In summary there is little evidence to suggest that caffeine will negatively affect urine output or hydration status.
Year of Submission
2005
Degree Name
Master of Arts
Department
School of Health, Physical Education, and Leisure Services
First Advisor
Forrest Dolgener
Second Advisor
Robin Lund
Third Advisor
Kevin Finn
Date Original
2005
Object Description
1 PDF file (68 leaves)
Copyright
©2005 Carissa Shima
Language
en
File Format
application/pdf
Recommended Citation
Shima, Carissa, "The Influence of Caffeine on the Hydration Status of College-Aged Females" (2005). Dissertations and Theses @ UNI. 1769.
https://scholarworks.uni.edu/etd/1769
Comments
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