Associations Between Measures Of Obesity And Arterial Stiffness Of Young Hispanic Men, Maria Perez

Open Access Theses & Dissertations

Arterial stiffness and obesity are independent predictors of coronary heart disease and cardiovascular disease mortality; however, there is conflicting evidence for the association between arterial stiffness and obesity. Arterial stiffness research of young Hispanic males is limited. PURPOSE: To examine the association between measures of obesity and peripheral and aortic stiffness of young Hispanic men. METHODS: All data are expressed as mean ± SD. Participants were 23 non-obese (nOB; BMI 25.87±3.09 kg/m2) and 21 obese (OB: BMI 35.42±4.87 kg/m2) young Hispanic men (age range 18–25 years). Measures of obesity included body fat percentage, BMI, waist circumference, hip circumference, and waist-to-hip …

Effects Of Exercise On Bmi Z-Score In Overweight And Obese Children And Adolescents: A Systematic Review With Meta-Analysis, George A. Kelley, Kristi S. Kelley, Russell R. Pate

Faculty Publications

Background: Overweight and obesity are major public health problems in children and adolescents. The purpose of this study was to conduct a systematic review with meta-analysis to determine the effects of exercise (aerobic, strength or both) on body mass index (BMI) z-score in overweight and obese children and adolescents.

Methods: Studies were included if they were randomized controlled exercise intervention trials ≥ 4 weeks in overweight and obese children and adolescents 2 to 18 years of age, published in any language between 1990–2012 and in which data were available for BMI z-score. Studies were retrieved by searching eleven electronic databases, …

25-Hydroxyvitamin D, Igf-1, And Waist Circumference A Cross-Sectional Study, Damon Mccune

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose: Waist circumference has been shown to have a link to various forms of chronic disease and low levels of Vitamin D (25(OH)D) and IGF-1. The purpose of this study is to assess if there is a relationship with Vitamin D (25(OH)D) and IGF-1 levels and waist circumference.

Methods: As part of a cross-sectional correlation study, participants were males and females (n=26), ages 25-65, who were students at UNLV and/or individuals who attend local health and wellness facilities as well as attendees of classes held by the UNLV Nutrition Center. Participants reported to UNLV to review and sign informed consent …

Utility Of Anthropometric Measures In A Multiethnic Population: Their Association With Prevalent Diabetes, Hypertension And Other Chronic Disease Comorbidities, Heather P. Tarleton, Lisa V. Smith, Zuo-Feng Zhang, Tony Kuo

Health and Human Sciences Faculty Works

Body mass index (BMI) and waist circumference (WC) are two common anthropometric measures of obesity in clinical and public health practice. Consensus, however, remains elusive regarding their utility for predicting cardiovascular disease risk in multiethnic populations. We address this gap in the literature by analyzing cross-sectional data from the first round of the Los Angeles County Health and Nutrition Examination Survey, 2011. We characterized the relationships between BMI, WC, waist-to-hip ratios, waist-to-height ratios, and chronic disease extent, as confirmed by the presence of hypertension, diabetes, and/or two or more other chronic conditions as defined by a composite indicator ‘comorbidity’. To …

Exercise And Time Of Day: Influence On Hunger And Caloric Intake Among Overweight/Obese Adults, Molly C. Weber

Masters Theses, 2010-2019

The purpose of this study was to determine whether or not the time of day at which exercise was performed, morning compared to evening, influences acute daily caloric intake and hunger in overweight/obese sedentary adults. 8 overweight/obese (Age: 40 ± 4 yrs, Height: 170 ± 4 cm, Weight: 85.7 ± 6.4 kg, BMI: 29 ± 2 kg/m2) sedentary adults completed 3 trials: control, morning, evening in a randomly counterbalanced cross over design. Caloric intake was assessed over three 4-day periods with subjects consuming ad libitum diets. Hunger was measured 15 minutes before exercise and 15 and 30 minutes following exercise. …

Correlational Analysis Of Bmi And Balance In Adults 50 And Over, Rachel D. Latimer, Casi Helbig

International Journal of Exercise Science: Conference Proceedings

Download PDF

Comparing Effectiveness Of Motivational Signage For Promoting Physical Activity Between Two Difference Story Buildings, Junyoung Hong

International Journal of Exercise Science: Conference Proceedings

Download PDF

Dietary Fiber Intake And Body Fat Percentage In Middle-Age Women, Jared M. Tucker, Dr. Larry A. Tucker

Journal of Undergraduate Research

Obesity is a big problem in the United States. The National Center for Health Statistics indicates that more than one in every three American adults is either overweight or obese. Unfortunately, individuals with excess body weight, and especially excess body fat, are at high risk for many health problems, including coronary heart disease, Type II diabetes, hypercholesterolemia, hypertension, and several cancers. Obesity also leads to premature mortality, with more than 300,000 deaths in the United States due to obesity every year.

Obesity-Related Hormones And Metabolic Risk Factors: A Randomized Trial Of Diet Plus Either Strength Or Aerobic Training Versus Diet Alone In Overweight Participants, Allan Geliebter, Christopher N. Ochner, Carl L. Dambkowski, Sami A. Hashim

Lander College of Arts and Sciences Publications and Research

There is debate about the additive effects of exercise in conjunction with diet to treat obesity, and not much is known about the differential effects of strength versus aerobic training. This randomized controlled trial examined the effects of diet plus strength training, diet plus aerobic training, or diet only on metabolic risk factors associated with obesity. Eighty-one overweight and obese participants completed the 8-week intervention. All participants received an energy-restrictive formula diet with an energy content based on 70% of measured resting metabolic rate (RMR). Participants assigned to an exercise group trained 3 days/week under supervision. Anthropometrics and fasting hormones …

A Community-Based Exercise Intervention Transitions Metabolically Abnormal Obese Adults To A Metabolically Healthy Obese Phenotype, Lance C. Dalleck, Gary Van Guilder, Tara B. Richardson, Donald L. Bredle, Jeffery M. Janot

Health and Nutritional Sciences Faculty Publications

Background: Lower habitual physical activity and poor cardiorespiratory fitness are common features of the metabolically abnormal obese (MAO) phenotype that contribute to increased cardiovascular disease risk. The aims of the present study were to determine 1) whether community-based exercise training transitions MAO adults to metabolically healthy, and 2) whether the odds of transition to metabolically healthy were larger for obese individuals who performed higher volumes of exercise and/or experienced greater increases in fitness. Methods and results: Metabolic syndrome components were measured in 332 adults (190 women, 142 men) before and after a supervised 14-week community-based exercise program designed to reduce …

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

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 …

Which Type Of Sedentary Behaviour Intervention Is More Effective At Reducing Body Mass Index In Children? A Meta-Analytic Review, Y. Liao, J. Liao, C. P. Durand, G. F. Dunton

Kinesiology Faculty Publications & Presentations - Archive

Sedentary behaviour is emerging as an independent risk factor for paediatric obesity. Some evidence suggests that limiting sedentary behaviour alone could be effective in reducing body mass index (BMI) in children. However, whether adding physical activity and diet-focused components to sedentary behaviour reduction interventions could lead to an additive effect is unclear. This meta-analysis aims to assess the overall effect size of sedentary behaviour interventions on BMI reduction and to compare whether interventions that have multiple components (sedentary behaviour, physical activity and diet) have a higher mean effect size than interventions with single (sedentary behaviour) component. Included studies (n = …

Validation Of Omron™ Pedometers Using Mti Accelerometers For Use With Children, Bradley P. Peters, Kate A. Heelan Phd, Bryce M. Abbey

International Journal of Exercise Science

International Journal of Exercise Science 6(2) : 106-113, 2013. The MTI accelerometer is highly regarded as a reliable means to measure physical activity in children (Trost et. al., 1998); however, it is not always a practical instrument to use. Pedometers offer an alternative method of activity measurement and are often more practical. PURPOSE: To validate Omron™ pedometer (steps/day) against MTI accelerometer (counts /day and moderate to vigorous physical activity (MVPA) min/day) for children. METHODS: 190 children (88 males, 102 females, 8.7±2.1 yrs, 76.9±27.5 BMI %tile) wore an MTI accelerometer and Omron™ pedometer attached to the same belt for 3.9±2.2 days. …

Myths, Presumptions, And Facts About Obesity, Krista Casazza, Kevin R. Fontaine, Arne Astrup, Leann L. Birch, Andrew W. Brown, Michelle M. Bohan Brown, Nefertiti Durant, Gareth Dutton, E. Michael Foster, Steven B. Heymsfield, Kerry Mciver, Tapan Mehta, Nir Menachemi, P.K. Newby, Russell R. Pate, Barbara J. Rolls, Bisakha Sen, Daniel L. Smith Jr, Diana M. Thomas, David B. Allison

Faculty Publications

BACKGROUND Many beliefs about obesity persist in the absence of supporting scientific evidence (presumptions); some persist despite contradicting evidence (myths). The promulgation of unsupported beliefs may yield poorly informed policy decisions, inaccurate clinical and public health recommendations, and an unproductive allocation of research resources and may divert attention away from useful, evidence-based information.

METHODS Using Internet searches of popular media and scientific literature, we identified, reviewed, and classified obesity-related myths and presumptions. We also examined facts that are well supported by evidence, with an emphasis on those that have practical implications for public health, policy, or clinical recommendations.

RESULTS We …

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 …

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 …

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 …

Effects Of Obesity On Thermoregulation And Cardiovascular Function During Exercise In Females, Jon David Adams

Graduate Theses and Dissertations

Previous research has shown that obese individuals are at greater risk for heat illnesses because of impaired thermoregulation. However, laboratory studies investigating cardiovascular and thermoregulatory function in obese individuals are difficult to interpret because of low sample sizes and methodological concerns. The purpose of this study was to determine if there are differences in thermoregulatory and cardiovascular function between obese and non-obese females. Twenty-four females, 13 obese (43.3 ± 4 .3 % fat, 77.2 ± 13.7 kg) and 11 non-obese (27.8 ± 6.0 % fat, 55.7±6.7 kg), cycled for 60 min in a warm environment (~40°C, 30% humidity) at a …

Effect Of Body Size And Exercise On Mood State, Alexandra Lachance

Graduate Theses and Dissertations

Exercising in the presence of nature (i.e., "green exercise"), has been shown to heighten the physiological and mental benefits of traditional exercise on non-obese individuals. The effects of green exercise on obese individuals are unknown. It is hypothesized that green exercise is more beneficial for obese (greater positive improvements in mental health scores), compared to non-obese individuals. For example, the benefits of green exercise could help lower feelings of depression, improve mood and self-esteem to increase the propensity of obese individuals to meet exercise recommendations. Accordingly, this study investigated the physiological and psychological effects of green exercise on 12 obese …

The Relationship Between Sleep Deprivation, Food Motivation, And Energy Intake In Normal-Weight And Obese Females, Lora Light Romney

Theses and Dissertations

Objective: Sleep deprivation has been proposed as a potential correlate of obesity, particularly influencing energy intake. Therefore, the purpose of this study was to compare neural indices of attention related to food motivation and energy intake in normal-weight and obese women under two separate sleep conditions: 1) sleep-restricted (<5 hours) and 2) recommended sleep (~8 hours). This study used a combined cross-over and ex post facto design with condition order counter-balanced. Methods: Twenty-two normal-weight (age=30.9±9.5y, BMI=22.0±1.6 kg/m2) and 18 obese (age=29.7±10.7 y, BMI=36.4±5.3 kg/m2) women completed both sleep conditions. To confirm sleep levels, participants recorded sleep quality and quantity via sleep logs and wore a wrist actigraph. Following each condition, participants reported to the laboratory under the same fed state (energy shake ~10% of total daily needs) to verify they followed the sleep protocol. Subsequently, motivation for food was tested using electroencephalogram (EEG); participants completed a computerized passive-viewing task of food and flowers, while event-related brain potentials (ERPs) were recorded. After EEG testing, participants continued their normal routine but recorded all energy intake using weighed food scales. There were no instructions or limitations on dietary intake. Analyses included P300 and LPP amplitudes in response to picture type, total next day energy intake, and energy intake by several periods of the day. Results: Participants averaged 4.7±0.4 hours of sleep during the sleep-restricted condition and 7.7±0.3 hours during the recommended sleep condition (F=1057.02; P<0.0001). There was no group*condition interaction for next day food motivation (P300: F<2.896, P>0.09; LPP: F<2.967, P>0.093). Next day total energy intake also did not differ by group*condition (F=1.81; P=0.187). When participants were pooled, there was no difference in energy intake by sleep condition (F=0.00; P=0.953). However, when participants’ energy intake was analyzed during the lunch period (following testing to 1:30pm) there was a …

Gender Difference In Obesity And Preventive Health Behaviors In A Us-Mexico Border Hispanic Cohort, Jing Wang, Belinda M. Reininger, Stanley Cron, Deidra Carroll, Susan P. Fisher-Hoch

International Journal of Exercise Science: Conference Proceedings

Purpose: Overweight and obesity is a prevalent chronic disorder in Mexican Americans, however, obesity-related behaviors and the role of gender remain unclear. This study examined gender difference in obesity-related health behaviors among Mexican Americans. Methods: A sample (n=1439) was drawn from the Cameron County Hispanic Cohort, a prospective cohort sample of Mexican American adults aged 18 years and older living in a large and poor city along the Texas / Mexico border. The participants’ baseline demographic, behavioral, and clinical measures were used for this analysis. Descriptive statistics and chi-square tests were conducted to analyze the data. Results: The sample had …

Neighborhood Walkability And Physical Activity: Results From The Health Is Power (Hip) Study, Nathan Parker

International Journal of Exercise Science: Conference Proceedings

Purpose: Health Is Power (NIH 1R01CA109403) was a longitudinal, multi-site intervention aimed to increase physical activity (PA) among community dwelling, healthy African American and Hispanic or Latina women. This study investigated the relationship between neighborhood walking environments and PA maintenance from T1 (baseline) through T2 (end of intervention) and to T3 (6-month follow-up post-intervention). Method: Women (N=410, M age=45.2 years, SD=9.4, 62.7% African American) completed interviewer-administered questionnaires assessing demographics at T1 and the International PA Questionnaire (IPAQ) to assess physical activity at T1, T2 and T3. Walkability characteristics for all street segments within 800m of participants’ homes …

Altered Irinotecan Pharmacokinetics In Diet-Induced Obesity, Pranav Shah, Adarsh Gandhi, Romi Ghose

International Journal of Exercise Science: Conference Proceedings

Title: Altered Irinotecan Pharmacokinetics in Diet-Induced Obesity

Authors: Pranav Shah*, Adarsh Gandhi and Romi Ghose

Affiliation: University of Houston, Department of Pharmacological and Pharmaceutical Sciences, Houston, TX - 77030

Purpose: Irinotecan (CPT-11) is a topoisomerase I inhibitor that has been shown to be highly effective in treatment of colon, stomach, pancreas, and non-small cell lung cancers. It has recently been shown that CPT-11 administration is associated with liver toxicity and this effect is compounded by baseline obesity. It was found that patients with a BMI index of >25 were twice as much susceptible to developing liver toxicity than patients with …

Addressing Obesity Prevention And Control In The Workplace, Mary D. Hill

International Journal of Exercise Science: Conference Proceedings

Texas Obesity Research Center

Addressing Obesity Prevention and Control in the Workplace

Hill MD, Lankford T

Centers for Disease Control and Prevention; Atlanta, Georgia

ABSTRACT

Purpose: Over one-third of adults in the United States (U.S.), over 72 million people, are obese. There are health and economic costs associated with obesity. In 2008, obesity-related medical costs were estimated to be as high as $147 billion. Method: The Centers for Disease Control and Prevention recommend policy and environmental change strategies that address obesity in multiple settings: healthcare, schools, child care, worksites, and community. In 2011, about 111.5 million U.S. adults were full-time …

Negative Body Image Is Related To Overeating Among Overweight Pregnant Women, Tracey Ledoux, Najmus Saher, Mcclain Sampson, Martina R. Gallagher, Pamela D. Berens

International Journal of Exercise Science: Conference Proceedings

Background: Overeating and pre-pregnancy obesity increase risks for complications during pregnancy. According to Social Cognitive Theory, individual and environmental factors influence health behaviors. Purpose: This study’s purpose was to determine whether social norms (environmental factor) and body image (individual factor) regarding pregnancy weight control were related to overeating behaviors among overweight/obese (OW/Ob) pregnant women.

Methods: Baseline data from an ongoing prospective study to identify predictors of excess gestational weight gain were used in this study. Pregnant women are being recruited from an obstetric clinic to complete a questionnaire, and research assistants are obtaining gestational weight gain data from …

Correlates Of Military Sexual Trauma, Mental Health, And Obesity Among Women Veterans, Deleene S. Menefee, Wendy S. Leopoulos, Sarah M. Torres, Rebecca Wagner

International Journal of Exercise Science: Conference Proceedings

Purpose: Obesity is a growing concern for Veterans Affairs (VA) providers of women Veterans as recent evidence suggests that females more than males have a higher prevalence of obesity. Further, women Veterans present to VA with rates of military sexual trauma that exceed prevalence rates in the civilian population. Research findings support the tenet that disorder eating, and adverse health outcomes are consequences of sexual trauma. However, the mental health correlates of MST and obesity have not been well established. One recent study of returning combat Veterans found that obesity is a significant concern. This purpose of the current …

Leptin And Its Association With Obesity Among Mexican Adolescents, Jesus M. Araujo-Contreras, Elias H. Avila-Rodriguez, Armando Avila-Rodriguez, Efren Rivas-Avila, Nelda Mier, Abelardo Camacho-Luis, Nohe Vargas-Chavez

International Journal of Exercise Science: Conference Proceedings

Purpose: To investigate the association between leptin concentrations and nutritional status among a Mexican adolescent population. Methods: Cross-sectional study with 448 adolescents attending five schools in Durango, Mexico. Serum leptin concentrations were measured by ELISA. Other measurements included height, weight, and waist and hip circumference. Body fat of participants was assessed with bio-electrical impedance using a body composition analyzer InBody-720. Sociodemographic information was also collected. Results: Based on IOTF BMI cut-off points, 34.1% of adolescents were overweight and obese and prevalence rates were higher among females (37.1%) than males (29.5%). In agreement with waist circumference, 22.5% of participants …

Angiotensin At2r Activation Increases Ace2/Ang1-7/Masr Axis And Prevents Fatty-Diet-Induced Obesity, Sourashish Nag, Quaisar Ali, Yonnie Wu, Tahir Hussain

International Journal of Exercise Science: Conference Proceedings

Purpose: Adipose tissue, the obligatory site of fat accumulation causing obesity, expresses local renin angiotensin system (RAS). RAS is commonly known to regulate blood pressure. However recently, we observed that angiotensin type 2 receptor (AT2R) activation prevents high-fat diet (HFD)-induced adiposity and hyperinsulinemia. Although, the mechanism(s) is(are) not known. There is evidence that other RAS components namely, the angiotensin type 1 receptor (AT1R) positively regulates while the angiotensin converting enzyme 2 (ACE2), which catalyzes the production of Mas receptor (MasR) peptide agonist Ang (1-7), inversely regulates adiposity and hyperinsulinemia. In light of the RAS inter-regulatory features, we hypothesize that AT2R …