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Full-Text Articles in Life Sciences
Effects Of Acute And Chronic Sleep Deprivation On Eating Behavior, Stephanie Frank
Effects Of Acute And Chronic Sleep Deprivation On Eating Behavior, Stephanie Frank
Lewis Honors College Capstone Collection
Sleep-deprivation is thought to be a factor in the rising American obesity epidemic. Altered sleep cycles affect appetite-regulating hormone levels and enhance the hedonic effect of food consumption. As a result, sleep restriction has been associated with an increased daily energy intake of more than 500 calories and high-carbohydrate/high-fat consumption. However, past studies have not examined the relationship between sleep deprivation and decreased intake of nutrient-dense fruits and vegetables as a factor in increased energy consumption. This paper aims to 1) determine the affect average hours of sleep or acute sleep deprivation (defined as less than 6 hour sleep per …
Evaluating Dietary Amino Acid Adequacy In Horses Using Isotopic Techniques, Sara L. Tanner
Evaluating Dietary Amino Acid Adequacy In Horses Using Isotopic Techniques, Sara L. Tanner
Theses and Dissertations--Animal and Food Sciences
Little is known about amino acid (AA) requirements in horses despite muscle mass accretion being of importance to an athletic species. Isotope methods for determining AA requirements and whole-body protein synthesis (WBPS) had not been previously used in growing horses. The first study herein was the first to apply isotope methods to determine WBPS in growing horses. In the study, weanling colts received two different levels of crude protein. Whole-body protein kinetics indicated that WBPS was greater when the weanlings were fed the diet with a greater crude protein content (P<0.05). The second study sought to determine a lysine requirement for yearling horses using the indicator AA oxidation (IAAO) method. Despite using six dietary levels of lysine; three above and three below the current recommendation, no breakpoint could be determined. Phenylalanine kinetics were not affected by lysine level (P>0.05), but plasma lysine increased linearly with lysine intake …