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The Impact Of Freedson Bout Vs. Non-Freedson Bout Physical Activity On Metabolic Syndrome Risk In College Students, Valerie Olijar

Masters Theses, 2010-2019

Purpose The aim of this study is to examine moderate to vigorous physical activity in Freedson bouts compared to non-Freedson bouts and their association with Metabolic Syndrome risk factors in college students.

Methods 72 subjects aged 18-26 were recruited from James Madison University. Subjects height, weight, waist circumference, blood pressure, and body composition were assessed on visit 1. Blood pressure, fasted blood glucose, and lipid profile were assessed on visit 2. Subjects wore an Actigraph GT3X+ accelerometer, which measured physical activity and sleep for 7 days and nights. Univariate Pearson correlation analyses were performed to determine the relationship physical activity …

The Effects Of Coffee Ingestion On The Acute Testosterone Response To Exercise, Taylor Landry

Masters Theses, 2010-2019

Abstract

This study investigated the effects of coffee ingestion (COF) on serum testosterone responses to exercise in recreationally weight-trained males. Subjects ingested either 12 ounces of 6mg/kg caffeinated coffee (COF), decaffeinated coffee (DEC), or water (PLA) one hour prior to exercise in a randomized, within-subject, crossover design. The exercise session consisted of 21 minutes of high intensity interval cycling (alternating intensities corresponding to two minutes at power outputs associated with 2.0 mmol/L lactate and 4.0 mmol/L lactate) followed by resistance exercise (7 exercises, 3 sets of 10 repetitions, 65% 1RM, 1-minute rest periods). Subjects also completed repetitions to fatigue tests …

The Effect Of Cattle Management On Soil Carbon: Implications For Climate Change, Kelly M. Livernoche

Masters Theses, 2010-2019

In naturally occurring ecosystems, forests function as substantial carbon sinks, storing carbon in soil and in biomass that would otherwise exist in the atmosphere as carbon dioxide. The conversion of forested land to cattle pastures and their associated operational processes are noteworthy contributors to recent increases in global carbon emissions and subsequent climate change. However, appropriately managed cattle pastures have potential to be reservoirs for carbon. Rotational cattle pastures, where cattle are moved between enclosed sections of pasture, may improve soil carbon content compared to conventional practices. In rotational cattle pastures, a more even distribution of manure increases plant biomass, …

The Antimicrobial And Biofilm Disruption Activity Of Novel Amphiphiles, Elizabeth A. Rogers

Masters Theses, 2010-2019

Antibiotic resistant infections are responsible for approximately 23,000 deaths every year in the United States alone. The formation of bacterial biofilms makes resistant bacteria difficult to eliminate completely using chemical treatment. Therefore, novel antimicrobial compounds such as amphiphiles are essential to slow or stop the spread of resistant bacteria. Several novel series of amphiphiles were synthesized, and discrete aspects of their chemical structure were altered to investigate the relationship between structure and antibacterial activity. Minimum inhibitory concentration (MIC) assays were used to measure antibacterial activity against two Gram-negative and five Gram-positive bacteria, and the most effective compounds were tested for …

Female Color Variation And Male Harassment In The Polymorphic Damselfly Megalagrion Calliphya, Phoebe Cook

Masters Theses, 2010-2019

Female dimorphism is commonly hypothesized to be a result of adaptations to male harassment. I tested whether polymorphic female coloration in the Hawaiian damselfly Megalagrion calliphya is under selection from male sexual harassment via two possible forms of negative frequency-dependent selection: the male mimicry and the learned mate recognition hypotheses. I measured male behavior toward tethered females at mating sites under naturally occurring conditions and found no evidence for either hypothesis. Harassment rates did not significantly differ between female morphs. One measure of morph frequency did predict harassment of all individuals, but this relationship was driven by a single population. …

Impact Of Burkholderia Phytofirmans Strain Psjn On The Ex Vitro Acclimatization And In Vitro Propagation Of Tissue Cultured Dionaea Muscipula (Venus Fly Trap), Peter L. Riley

Masters Theses, 2010-2019

Dionaea muscipula, Venus fly trap, is an endangered plant that is propagated primarily through tissue culture. Tissue cultured plants must be acclimatized to their new environments when removed from their test tubes and the ensuing stress can result in plant mortality. A plant growth promoting rhizobacterium, Burkholderia phytofirmans strain PsJN, has been utilized in biotic hardening of tissue cultured plants and in the amelioration of stresses, particularly drought stress in potted plants. We investigated whether this bacterium could improve either propagation or acclimatization of tissue cultured Venus fly traps. Standardized inoculations were performed by adjusting cell density of inoculant …

The Effect Of Menstrual Phase And Oral Contraceptive Steroids On Caffeine During Cycling Performance, Annette M. Lemanski

Masters Theses, 2010-2019

PURPOSE: There is evidence that female sex hormones impact caffeine metabolism, with decreased CYP1A2 activity and diminished caffeine clearance in women with higher estrogen levels. Therefore, the objectives of this project were to determine the effects of oral contraceptives and menstrual cycle on the benefits of caffeine supplementation for cycling performance. METHODS: Sixteen recreationally trained female cyclists, oral contraceptive steroid (OCS) users (n=8, age = 21.4 ± 1.4 years, height = 168.4 ± 3.6 cm, weight = 63.6 ± 7.2kg, VO_2max = 48.0 ± 4.0 ml/kg/min), and non-users (n=8, age = 20.9 ± 2.1 years, height = 161.0 ± …