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ASU Electronic Theses and Dissertations


This collection includes most of the ASU Theses and Dissertations from 2011 to present. ASU Theses and Dissertations are available in downloadable PDF format; however, a small percentage of items are under embargo. Information about the dissertations/theses includes degree information, committee members, an abstract, supporting data or media.

In addition to the electronic theses found in the ASU Digital Repository, ASU Theses and Dissertations can be found in the ASU Library Catalog.

Dissertations and Theses granted by Arizona State University are archived and made available through a joint effort of the ASU Graduate College and the ASU Libraries. For more information or questions about this collection contact or visit the Digital Repository ETD Library Guide or contact the ASU Graduate College at gradformat@asu.edu.


Status
  • Public
Subject
Date Range
2011 2019


Maximal oxygen uptake (VO2max) declines with age and is a predictor of morbidity and mortality risks. Due to these implications, accurate assessment and determination of VO2max are important for the older population. Without the presence of a VO2 plateau, secondary criteria are used to determine whether the test resulted in a maximal value. However, inconsistent secondary criteria do not account for intersubject variability. To circumvent this issue, a verification phase following a traditional ramp assessment may be utilized. The purpose of this study was to compare verification phase strategies in older adults. A secondary purpose of this study was to …

Contributors
Villanueva, Ian Robert, Dickinson, Jared M, Gaesser, Glenn A, et al.
Created Date
2019

The prevalence of obesity and obesity-related disorders have increased world-wide. In the last decade, the intestinal microbiome has become a major indicator of metabolic and gastrointestinal health. Previous research has shown that high-fat diet (HFD) consumption can alter the microbial composition of the gut by increasing the abundance of gram-positive bacteria associated with the onset of obesity and type 2 diabetes. Although, the most common form of obesity and metabolic syndrome intervention is exercise and diet, these recommendations may not improve severe cases of obesity. Thus, an important relevance of my project was to investigate whether the intake of an …

Contributors
Crawford, Meli'sa Shaunte, Sweazea, Karen L, Deviche, Pierre, et al.
Created Date
2019

Hypoxic hypoxia is a physiological condition which can manifest as a result of reduced barometric pressure, resulting in an insufficient amount of oxygen for use by the tissues in the body. Hypoxic hypoxia is of concern to pilots due to dangerous impairment the condition can cause in-flight, such as short term memory loss, incoordination, or incapacitation. Several aircraft incidents and accidents have been attributed to hypoxia in the past ten years. To train for hypoxia recognition, high altitude chambers are used to induce hypoxia in participants, through a reduction of pressure inside a reinforced chamber. The training allows participants to …

Contributors
Stevenson, Kasey, Niemczyk, Mary, Nullmeyer, Robert, et al.
Created Date
2019

Environmental changes are occurring at an unprecedented rate, and these changes will undoubtedly lead to alterations in resource availability for many organisms. To effectively predict the implications of such changes, it is critical to better understand how organisms have adapted to coping with seasonally limited resources. The vast majority of previous work has focused on energy balance as the driver of changes in organismal physiology. While energy is clearly a vital currency, other resources can also be limited and impact physiological functions. Water is essential for life as it is the main constituent of cells, tissues, and organs. Yet, water …

Contributors
Brusch, George Arthur, DeNardo, Dale F, Blattman, Joseph, et al.
Created Date
2019

All organisms need to be able to sense and respond to their environment. Much of this process takes place via proteins embedded in the cell membrane, the border between a living thing and the external world. Transient receptor potential (TRP) ion channels are a superfamily of membrane proteins that play diverse roles in physiology. Among the 27 TRP channels found in humans and other animals, TRP melastatin 8 (TRPM8) and TRP vanilloid 1 (TRPV1) are the primary sensors of cold and hot temperatures, respectively. They underlie the molecular basis of somatic temperature sensation, but beyond this are also known to …

Contributors
Hilton, Jacob, Van Horn, Wade D, Levitus, Marcia, et al.
Created Date
2019

Background: Understanding an athlete’s workload is one way to determine the likelihood of receiving a sports injury. Workload variables are categorized as either internal load (IL) such as heart rate, or external load (EL) which include speed, distance or volume. Objective: This study investigated the correlation between IL and EL measured by micro-technology in female college soccer players. In addition, the utility of IL and EL to predict risk of soft tissue injury on lower limbs was examined. Method: 23 NCAA Division One women soccer players 19.2 ± 1.2 years old, 168.2 ± 7.3 cm, and 141.0 ± 17.9 kg …

Contributors
Ishida, Ai, Swan, Pamela, Beaumont, Joshua, et al.
Created Date
2018

Literature was reviewed about how synchrony occurs in infant-parent dyads, in emotion, and physiologically in couple dyads. Social baseline theory suggests that both conversation and interpersonal touch confer benefits by reducing burden on the participants through coregulatory processes. The current study examined how affectionate touch and positive conversation influenced physiological synchrony, a potential mechanism of physiological coregulation, in couples. Because synchrony is believed to occur within the autonomic nervous system, in the present study, physiological synchrony was measured using cardiac interbeat interval (IBI) as an indicator of autonomic nervous system activation. Couples were assigned to one of four conditions: interpersonal …

Contributors
McAfee, Ashley, Burleson, Mary, Duran, Nicholas, et al.
Created Date
2018

Obesity prevalence is high in the United States, in part due to increased fat storage following consumption of high fat/carbohydrate (sugar) foods. Following a meal, carbohydrate stimulates its own oxidation, while simultaneously suppressing fat oxidation, ultimately leading to fat storage. Aerobic exercise preceding a meal increases fat oxidation in the postprandial period, which may reduce fat storage. The ideal exercise prescription for optimal postprandial fat oxidation is unknown. The effect of low and moderate intensity continuous exercise (MIE) has been studied extensively, while the effects of high-intensity interval exercise (HIIE) on post-prandial substrate oxidation has not been examined. The purpose …

Contributors
Fleming, Jacob Michael, Johnston, Carol S, Gaesser, Glenn A, et al.
Created Date
2018

The purpose of this dissertation was 1) to develop noninvasive strategies to assess skeletal muscle size, architecture, and composition in young and old adults (study #1) and 2) evaluate the impact of chemotherapeutic treatment on skeletal muscle satellite cells and capillaries (study #2). For study #1 ultrasound images were obtained from the quadriceps muscles of young (8 m, 8 f) and older (7 m, 5 f) participants on two occasions, separated by 5-15 days. Images were collected while the participants were both standing and supine, and were analyzed for muscle thickness, pennation angle, and echogenicity. In addition, test-retest reliability and …

Contributors
D'Lugos, Andrew, Dickinson, Jared M, Buman, Matthew P, et al.
Created Date
2018

The ability to tolerate bouts of oxygen deprivation varies tremendously across the animal kingdom. Adult humans from different regions show large variation in tolerance to hypoxia; additionally, it is widely known that neonatal mammals are much more tolerant to anoxia than their adult counterparts, including in humans. Drosophila melanogaster are very anoxia-tolerant relative to mammals, with adults able to survive 12 h of anoxia, and represent a well-suited model for studying anoxia tolerance. Drosophila live in rotting, fermenting media and a result are more likely to experience environmental hypoxia; therefore, they could be expected to be more tolerant of anoxia …

Contributors
Campbell, Jacob B, Harrison, Jon F, Gadau, Juergen, et al.
Created Date
2018