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Articles 1 - 19 of 19
Full-Text Articles in Life Sciences
Racial Differences In Self-Efficacy Expectations For Exercise, Selena P. Smith
Racial Differences In Self-Efficacy Expectations For Exercise, Selena P. Smith
Honors Theses
This project examined the link between race and self-efficacy. Self-efficacy pertains to an individual’s confidence in ability to complete or engage in a particular task or activity (Bandura, 1986). Prior research shows that self-efficacy has a great influence on exercise initiation and adherence (Bandura, 1986; Dishman, 1982; Rodgers and Sullivan, 2001). Research also supports that Caucasians are more likely to participate in exercise than African Americans (Centers for Disease Control and Prevention, 2000).
Participants included 51 females, 31 Caucasians and 20 African Americans, between the ages of 18 and 50 years old. The women were recruited from local fitness gyms, …
The Relationship Between Television Viewing Time And Cardiorespiratory Fitness In Adult Women, Peter Jacob Arens
The Relationship Between Television Viewing Time And Cardiorespiratory Fitness In Adult Women, Peter Jacob Arens
Theses and Dissertations
Purpose: The present investigation was conducted to assess the relationship between television viewing time and cardiorespiratory fitness. Design: Cross-sectional. Setting: Intermountain West. Participants: 302 middle-aged women. Method: TV viewing was assessed using a questionnaire. Cardiorespiratory fitness was measured using a maximal graded treadmill test. Physical activity (PA) was evaluated using Actigraph accelerometers worn over seven consecutive days, while body fat percentage (BF%) was measured using air displacement plethysmography (Bod Pod). Results: (Mean ± SD) age: 40.2 ± 3.0 years. VO2max of the frequent (≥ 3hrs/day) TV group (32.6 ± 6.4) was significantly lower than both the moderate (1-2 hrs/day) (36.2 …
Metformin-Induced Pedf Expression Regulates Cell Proliferation And Lipid Metabolism In Prostate Cancer Cells, Miguel Angel Tolentino
Metformin-Induced Pedf Expression Regulates Cell Proliferation And Lipid Metabolism In Prostate Cancer Cells, Miguel Angel Tolentino
Theses and Dissertations
Prostate cancer (PCa) is one of the most common cancers in American males. A high fat diet and obesity accelerate PCa progression and increase the 1risk of death from disease. Epidemiological studies have indicated that PCa patients with type 2 diabetes have higher mortality rates than PCa patients without diabetes. Type 2 diabetics who are on metformin, a drug to control blood sugar levels, show a delay in PCa progression in comparison with PCa patients with type 2 diabetes who are not on metformin. It has been proposed that metformin inhibits proliferation via activation of AMP-activated protein kinase (AMPK) or …
Aging And Obesity Models In Osteoarthritis, Sara Ohora
Aging And Obesity Models In Osteoarthritis, Sara Ohora
Electronic Thesis and Dissertation Repository
Osteoarthritis (OA) is a degenerative joint disease whose exact mechanisms are not well understood, but aging and obesity are common risk factors. To determine the role of transforming growth factor-alpha (TGFα) in obesity-associated OA, Tgfa null and control mice on control and high fat diets were compared. In addition, spontaneous OA was investigated in aging C57BL/6J mice. Quantitative magnetic resonance was used to assess body composition in the obesity model, while gait analysis, histological staining and OARSI scoring were used to determine OA in both models. Mice on high fat diet developed no OA, but Tgfa null mice weighed significantly …
Maternal Acculturation Levels And Their Effect On Children's Food Intake, Maternal Perceptions Of Body Size And Maternal Stress, Tracie A. Chavoor
Maternal Acculturation Levels And Their Effect On Children's Food Intake, Maternal Perceptions Of Body Size And Maternal Stress, Tracie A. Chavoor
Master's Theses
In the U.S., obesity has hit alarming rates and affects Hispanic children disproportionately. Acculturation, the shift from one culture’s values, beliefs and practices to those of a new culture, may have both negative and positive health effects on immigrants. The objectives of this study were to determine the association between the level of acculturation (low acculturation or high acculturation) of low-income Latina mothers and the foods consumed by their children (0 to 36 months old). The association between acculturation and maternal perceptions of infant and toddler body size, maternal perceptions of her own body size and maternal parenting stress were …
Acceleration Of The Panin Development In Mice Expressing Oncogenic K-Ras Due To A High Fat Diet, Bincy Philip
Acceleration Of The Panin Development In Mice Expressing Oncogenic K-Ras Due To A High Fat Diet, Bincy Philip
Dissertations & Theses (Open Access)
Obesity is postulated to be one of the major risk factors for pancreatic cancer, and recently it was indicated that an elevated body mass index (BMI correlates strongly with a decrease in patient survival. Despite the evident relationship, the molecular mechanisms involved are unclear. Oncogenic mutation of K-Ras is found early and is universal in pancreatic cancer. Extensive evidence indicates oncogenic K-Ras is not entirely active and it requires a triggering event to surpass the activity of Ras beyond the threshold necessary for a Ras-inflammation feed-forward loop. We hypothesize that high fat intake induces a persistent low level inflammatory response …
The Relationship Between Calcium Intake And Body Mass Index In The Participants Of Hub City Steps, Laura P. Ewoldt
The Relationship Between Calcium Intake And Body Mass Index In The Participants Of Hub City Steps, Laura P. Ewoldt
Honors Theses
Background: The social, economic, and health impacts of unhealthy dietary behaviors and sedentary lifestyles are quite significant and even more so in the rural South. The majority of individuals in the US do not adhere to the Dietary Guidelines for Americans, specifically fruits, vegetables, and calcium.
Purpose: The purpose of this study was to address the issue of calcium intake and obesity in a population of primarily African American women in south Mississippi and to determine if levels of calcium intake had a relationship with body mass index.
Methods and Analysis: Data for the current study was …
Diet-Induced Obesity Decreases Liver Iron Stores In Mice Fed Iron Deficient, Adequate, Or Excessive Diets, Brett J. Healy
Diet-Induced Obesity Decreases Liver Iron Stores In Mice Fed Iron Deficient, Adequate, Or Excessive Diets, Brett J. Healy
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Epidemiological and observational evidence suggests that obesity is related to poor Fe status. To determine interactions between obesity, dietary Fe intake and Fe status; male, weanling C57BL/6J mice were fed either high fat diets to induce obesity or a standard diet for 16 weeks. Fe concentrations of both the high fat or control diet (4.5 vs 3.8 kcal/g) were set at: 5, 50 or 500 mg Fe/kg diet. Mice fed the high fat diets had significantly higher percentage body fat (17.9%) compared to mice fed control diets (5.3%, P<0.001). Among obese mice, dietary Fe levels did not significantly influence body composition. Conversely among lean mice, mice fed the iron excessive diet had significantly less fat mass when compared to mice fed the iron deficient diet (P<0.05). Obesity and/or dietary Fe concentration did not significantly affect plasma Fe levels. ANOVA analysis showed significant effects of diet-induced obesity, dietary Fe and an interaction between both factors on liver Fe levels (P< 0.05). Obese mice had significantly lowered liver Fe levels compared to lean cohorts fed the same amount of dietary Fe (P<0.05 for all comparisons). Moreover, lean mice fed the Fe deficient diet (5 mg Fe/kg diet) had similar liver Fe levels (127 mg Fe/kg ± 0.04) compared to obese mice fed the 50 mg Fe/kg diet (132 mg Fe/kg ± 0.05). These data suggest that obesity, independent of dietary Fe intake, influences liver Fe stores.
Assessment Of Dietary Behaviors Of College Students Participating In The Health Promotion Program Bucs: Live Well, Courtney E. Mckinney
Assessment Of Dietary Behaviors Of College Students Participating In The Health Promotion Program Bucs: Live Well, Courtney E. Mckinney
Electronic Theses and Dissertations
Rates of adult obesity in the United States continue to rise, especially among the college-age population who typically practice poor dietary choices, contributing to weight gain. College-age students experience a transitional phase called ‘emerging adulthood’ where they learn autonomy in many areas that influence long-term health status. The purpose of the online health promotion program BUCS: Live Well was to promote self-efficacy in ability to incorporate positive dietary changes, assess incidences of positive dietary habits after completing the program, and determine if weight status, residence, and health perceptions influence dietary behaviors. BUCS: Live Well was successful in assessing current dietary …
Elongation Factor 1a-1 And Hepatocyte Response To Fatty Acid Excess, Alexandra M. Stoianov
Elongation Factor 1a-1 And Hepatocyte Response To Fatty Acid Excess, Alexandra M. Stoianov
Electronic Thesis and Dissertation Repository
Obesity is associated with elevated levels of serum fatty acids, which accumulate in nonadipose tissues including the liver. Elongation factor 1A-1 (EF1A-1) has previously been shown to participate in the cell stress and death response of cardiomyocytes to excess saturated fatty exposure, and in steatotic mouse myocardium. In this thesis, the hypothesis that the hepatocyte response to fatty acid overload involves EF1A-1 was tested. EF1A-1 expression was induced in the livers of obese mice in association with severe hepatic steatosis, and in HepG2 human hepatoma cells in response to excess palmitate. Partial translocation of EF1A-1 from the ER to polymerized …
Cardiorespiratory Responses In Healthy-Weight And Obese Women And Children, Elizabeth Ann Easley
Cardiorespiratory Responses In Healthy-Weight And Obese Women And Children, Elizabeth Ann Easley
Theses and Dissertations--Kinesiology and Health Promotion
A criterion method to evaluate cardiorespiratory health is measuring peak oxygen consumption (VO2 peak) from a maximal graded exercise test (GXT). While VO2 peak is a valuable measure, heart rate recovery (HRRec) and endothelial function (EF) also describe cardiorespiratory health and fitness. The purpose of this study was to investigate whether differences exist in VO2 peak, HRRec, and EF between healthy-weight (HW) and obese (OB) women and children and to determine if there were significant correlations among these variables. A total of 60 women and children participated in this study. Anthropometric, body composition, resting heart rate and …
Fatty Acid Fate In Determining Oxidation And Inflammation In Adipose Tissue, Emilio Patrick Mottillo
Fatty Acid Fate In Determining Oxidation And Inflammation In Adipose Tissue, Emilio Patrick Mottillo
Wayne State University Dissertations
Adipose tissue (AT) is a critical regulator of energy balance through its ability to store or oxidize free fatty acids (FFAs). White adipose tissue (WAT) functions as an anabolic organ to sequester and release FAs, in contrast brown adipose tissue (BAT) is a catabolic organ that oxidizes FAs. However, a comprehensive understanding of the role that FFAs play in the function of WAT and BAT is needed. Here we demonstrate that intracellular FAs enhance the expression of inflammatory cytokines by β3-AR activation in adipocytes, in which the expression of PAI-1 is partly mediated by the de novo synthesis of ceramides/sphingolipids. …
Linking Environmental Toxicant Exposure To Diabetes Susceptibility, Jannifer Beth Tyrrell
Linking Environmental Toxicant Exposure To Diabetes Susceptibility, Jannifer Beth Tyrrell
Wayne State University Dissertations
An important and unresolved question in the environmental health field is whether exposure to common environmental toxicants, such as dioxin and heavy metals like Pb, increase the risk of developing diabetes, especially in combination with other common metabolic stressors such as obesity.
Previous studies suggested that dioxin exposure increased peripheral insulin resistance but did not appear to cause fasting hyperglycemia or elevated hepatic glucose output. In concordance with those findings we observed that dioxin treatment caused a strong suppression of the expression of the key hepatic gluconeogenic genes PEPCK and G6Pase. However, this suppression was not solely mediated by the …
The Effect Of Alpha-Cyclodextrin On Acute Blood Lipid And Glycemic Responses To A Fat Containg Meal, Evan Neil Fletcher
The Effect Of Alpha-Cyclodextrin On Acute Blood Lipid And Glycemic Responses To A Fat Containg Meal, Evan Neil Fletcher
Wayne State University Theses
Obesity and hyperlipidemia have become major concerns in the United States over the past 30 years. Alpha-Cyclodextrin (á-CD), a naturally occurring soluble dietary fiber, has been shown to reduce dietary fat absorption and improve blood lipid levels in an animal model (mouse and rat) and in human studies. In the current double blind study, 34 healthy male and female participants were recruited to test if á-CD had any acute effect on blood lipid and glycemic responses to a fat containing meal. The participants received the á-CD on one occasion and a placebo the other to determine if there was any …
Executing And Teaching Science--The Breast Cancer Genetics And Technology-Rich Curriculum Professional Development Studies Of A Science Educator, Regina Evarn Wragg
Executing And Teaching Science--The Breast Cancer Genetics And Technology-Rich Curriculum Professional Development Studies Of A Science Educator, Regina Evarn Wragg
Theses and Dissertations
This dissertation presents my explorations in both molecular biology and science education research. In study one, we determined the ADIPOQ and ADIPORI genotypes of 364 White and 148 Black BrCa patients and used dominant model univariate logistic regression analyses to determine individual SNP and haplotype associations with tumor or patient characteristics in a case-case comparison. We found twelve associations between individual SNPs and patient or tumor characteristics that impact BrCa prognosis. For example, the ADIPOQ rs1501299 C allele was associated with ER+ tumors (OR=4.73, p=0.001) among White women >50 years of age at their time of diagnosis. Also, the A …
Associations Between Resting Metabolic Rate And Energy Storage In Young Adults, Robin Shook
Associations Between Resting Metabolic Rate And Energy Storage In Young Adults, Robin Shook
Theses and Dissertations
At the most basic level obesity is the result of a chronic imbalance between energy intake and energy expenditure. However, the exact etiology is considerably more complex and may involve a variety of physiological and behavioral factors. Metabolic disturbances, including reduced fat oxidation as measured by the respiratory quotient (RQ) and reduced resting metabolic rate (RMR), have been identified as possible predictors of changes in body weight and body composition. RMR represents the largest component (60-80%) of caloric expenditure that contributes to total daily energy expenditure in humans and has high inter-person variability (±25%) but not within individuals (<±5%). The cause of this variability between individuals and the exact role of RMR and RQ in determining body weight and body composition are uncertain.
This …
±5%).>The Effects Of A High Fat Diet On Mitochondrial Biogenesis And Inflammation In The Brain., Lauren Suzanne Vervaecke
The Effects Of A High Fat Diet On Mitochondrial Biogenesis And Inflammation In The Brain., Lauren Suzanne Vervaecke
Theses and Dissertations
INTRO: High fat diets (HFD) ingested over long periods of time have been shown to cause diet induced obesity leading to excessive adiposity and chronic low grade inflammation. Here we have shown how differing levels of saturated fats (SF), which are common storage fats, affect markers of inflammation and mitochondrial biogenesis. IL-1â and TNF-alpha are pro-inflammatory cytokines that have been shown to increase with a HFD, while molecular signalers, PGC-1alpha, cyt c, and SIRT1, related to mitochondrial biogenesis have been shown to decrease. Despite the risks of consuming a diet high in SF's, consumers continue to buy energy dense foods …
An Investigation Into The Influence Of Dietary Saturated Fat And Quercetin Supplementation On Adiposity, Macrophage Behavior, Inflammation, And Non-Alcoholic Fatty-Liver Disease, Reilly Enos
Theses and Dissertations
The overall objective of this dissertation was to examine the degree to which manipulation of the saturated fat content of a high-fat diet influenced obesity-related outcomes as well as to see if the naturally-occurring flavonoid, quercetin, could attenuate the resulting obesity and related metabolic and inflammatory side effects. Specifically, these studies examined 1) the influential role of saturated fat on macrophage function, inflammation, and other obesity-related comorbidities, including non-alcoholic fatty-liver disease, and 2) the potential benefits of quercetin supplementation. Overall, results from these studies suggest that adiposity, macrophage behavior, inflammation, insulin resistance, and non-alcoholic fatty-liver disease progression can be greatly …
Exposure To Persistent Organic Pollutants And Metabolic Diseases, Zafar Zayirovich Aminov
Exposure To Persistent Organic Pollutants And Metabolic Diseases, Zafar Zayirovich Aminov
Legacy Theses & Dissertations (2009 - 2024)
Background: The metabolic syndrome (MetS) is a group of diseases that tend to occur together, including diabetes, hypertension, central obesity, cardiovascular disease and hyperlipidemia. Exposure to persistent organic pollutants (POPs) such as polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) have been associated with increased risk of development of several of the components of the MetS.