Life Sciences Commons^™

A Leucine-Enriched Diet Enhances Overload-Induced Growth And Suppresses Markers Of Protein Degradation In Aged Rat Skeletal Muscle, Scott E. Gordon, William Mixon, Hoke Whitworth, Rengfei Shi

International Journal of Exercise Science: Conference Proceedings

Introduction: The hypertrophic response to overload in fast-twitch skeletal muscle is impaired in aged humans and rats, and upregulation of protein degradation pathways are hypothesized to be a contributing factor. Muscle growth occurs when protein synthesis is greater than protein degradation. Dietary supplementation of the essential amino acid leucine has been shown to reduce protein degradation in both young and aged skeletal muscle. Specifically, leucine acts in part by attenuating 5'-AMP-activated protein kinase (AMPK) activation as well as the translocation of the forkhead box transcription factor 3A (FoxO3, known to promote transcription of mRNAs encoding degradation pathway proteins) to the …

Effects Of Multivitamin Supplementation On Heart Rate Response In Aerobically Untrained College Aged Students, Greg A. Ryan, Charles P. Katica, Stacy H. Bishop, Robert L. Herron, Andy M. Bosak, Mark Sloniger

International Journal of Exercise Science: Conference Proceedings

Multivitamin use is increasingly prevalent in the US among most every population. Yet, previous research noted no performance benefits among individuals following a supplementation period. This study focused on the potential physiological benefits from a three week multivitamin supplementation period using 24 (20.9 ± 2.6yr) aerobically untrained college aged students. Subjects were divided equally into three groups (placebo = PL, multivitamin = MV, control = CL) and asked to perform separate eight minute bouts of exercise, consisting of six min of moderate (60%VO2max) intensity followed immediately by two min of high (85%VO2max) intensity exercise on a cycle ergometer. Following the …

Body Composition, Physical Activity And Fitness In Children With Moderate-To-Severe Intellectual Disability, Sigurbjorn A. Arngrimsson, Ingi T. Einarsson

International Journal of Exercise Science: Conference Proceedings

Introduction: The prevalence of overweight and obesity has been rising in most parts of the world over the past two decades (1, 2). This rise could pose even a greater problem for people with intellectual disability (ID) because they are more likely to be obese than people without ID (3). Furthermore, research has shown that a sedentary lifestyle is more prevalent among people with ID than otherwise healthy people in modern society (4). In the general population, the adverse effects of obesity on health begin early in life and physical inactivity and adiposity are associated with metabolic diseases and cancers …

The Physiological Stress Response To Anaerobic Exercise Is Altered Following Sodium Bicarbonate Supplementation, Dan J. Peart, Richard Kirk, Angela Hillman, Bryna Chrismas, Leigh Madden, Jason Siegler, Rebecca Vince

International Journal of Exercise Science: Conference Proceedings

Sodium bicarbonate (NaHCO3) is a nutritional aid that is proposed to enhance performance by reducing the state of exercise induced acidosis, however research is currently equivocal. Despite this, most research still focuses on its effects upon performance, and not whether the reduced acidosis impacts upon any other factors related to exercise. There is some research to suggest that such a reduction in [H+] can attenuate a number of physiological stress pathways such as stress hormones (1, 4), heat shock protein 72 (HSP72) and oxidative stress (3), suggesting a potential role in exercise recovery. However there are some limitations with this …

C-Reactive Protein And The Disease Analog Model May Identify Predisposed Pre-Obese African-American Women, James W. Navalta, Scott Lyons, Sharon E. Whitlock, Demetrice D. Kirkwood, Scott W. Arnett, Mark A. Schafer

International Journal of Exercise Science: Conference Proceedings

While the obesity rate in the Unites States has been reported to have hit a plateau, the overall percentage of obese Americans remains alarmingly high (27% self-reported, 33% population estimate). While the subgroup with the highest 2010 obesity rate is Black, non-Hispanic women (41.9%), there remains a disparity in the research with regards to this population group. The implication of an elevated obese population puts a strain on health care, overall quality of life, and is associated with a number of other co-morbidities. Given this background, pilot work to evaluate a disease analog model for obesity would be useful with …

Gender Related Differences In Stress And Health Outcomes In College Age Students, Michael Cedeno, Jennifer Blevins-Mcnaughton

International Journal of Exercise Science: Conference Proceedings

Background and Purpose: Rates of obesity and metabolic disorders in young adults are becoming more prevalent in today’s society. To date, only a few investigators have compared the effect that stress may have on health and metabolic outcomes in college age adults. The purpose of this study is to determine the relationship between stress and cholesterol levels in male versus female college age students.

Methods: Thirty-six adults ages 20 to 27 participated in this study. Total blood cholesterol, HDL, LDL, triglycerides, TC/HDL ratio, and glucose were measured one time using the Cholestech LDX® after either an overnight, or 4-hour fast. …

Dietary Intake In Ncaa Division Ia Football Players During The Off-Season, Kathryn M. Mccammon, Jonathan Oliver, Jonathan Tanguay, David Weir, Stephen Crouse

International Journal of Exercise Science: Conference Proceedings

Off-season football player interaction with athletic personnel is limited and may result in the athletes’ diets not meeting current ACSM guidelines for macronutrient intake or recommendations for key micronutrients, having a negative impact on performance and health. Purpose: To examine the dietary intake of NCAA Division IA football players during the summer off-season to determine if ACSM nutrition guidelines were being met. Methods: Fifty-nine NCAA Division IA football players (20 ± 2 yrs, 186.7 ± 6.4 cm, 102.9 ± 18.5 kg) completed a 24 hour dietary recall administered by a Registered Dietitian. Recalls were obtained during the summer off-season when …

The Effects Of An Obesogenic Diet On Liver Oxysterol Metabolism In C57bl/6j Mice, Joshua S. Wooten, Huaizhu Wu, Joe L. Raya, Amir Mansoori, Xiao-Yuan Dai Perrard, Jerry Perrard, Ron C. Hoogeveen

International Journal of Exercise Science: Conference Proceedings

Oxysterols are key regulators of lipid metabolism and play a role in the etiology of atherosclerosis; however, our current understanding of tissue levels of oxysterols during different disease states such as obesity is limited. The purpose of this study was to quantify the effects of obesity induced by a high fat-cholesterol (HFC) diet on liver oxysterol metabolism. Male C57BL/6J mice were fed either a standard control diet (5.0% w/w fat, 0.03% w/w chol) or a HFC (21.0% w/w fat, 0.15% w/w chol) diet for 24 weeks. Comparisons between dietary groups were made with independent sample t-tests. Total body mass and …

The Effect Of Short And Long Recovery Periods On The Contribution Of Oxidative Processes To Energy Expenditure During Multiple Bouts Of Supramaximal Exercise, Eric C. Olson, Kenneth V. Christensen, Adam Jajtner, Jen Copeland, Matt Unthank, Joel B. Mitchell

International Journal of Exercise Science: Conference Proceedings

The Effect of Short and Long Recovery Periods on the Contribution of Oxidative Processes to Energy Expenditure During Multiple Bouts of Supramaximal Exercise

Olson, E. (undergraduate), Christensen, K., Jajtner, A., Copeland, J., Unthank, M., and Mitchell, J. Exercise Physiology Lab, Texas Christian University, Ft. Worth, TX.

The contribution of oxidative energy production to multiple sprint exercises is of interest due to implications for the training needs of people engaging in anaerobic activities. PURPOSE: The purpose of this study was to examine the effect of short and long active recovery durations on oxidative and anaerobic contributions to energy output during maximal …

Artificial Sweetener Sensing In The Human Mouth And Effect On Exercise Performance, James Mock

International Journal of Exercise Science: Conference Proceedings

Many studies have suggested that oral rinsing of a sweet carbohydrate can positively affect exercise performance by stimulating reward centers in the brain. However, few studies have been performed which compared the effects of a sweet carbohydrate with a sweet artificial sweetener. The purpose of this study was to examine the effects of a sweet carbohydrate rinse, an artificial sweetener rinse, and a water rinse on exercise performance. Eight college students completed a ten-minute trial ride and were able to perform significantly more work when rinsing with the carbohydrate or artificial sweetener rinses (Total work= 116.63 (20.3) kJ p=0.003, 117.04 …

Vitamin D Status Relative To Diet, Lifestyle, Injury, And Illness In College Athletes, Tanya M. Halliday, Nikki J. Peterson, Joi J. Thomas, Kent Kleppinger, Bruce W. Hollis, D. Enette Larson-Meyer

International Journal of Exercise Science: Conference Proceedings

Vitamin D deficiency is endemic in the general population; however, there is much to be learned about the vitamin D status of athletes. Purpose: The purposes of this study were to assess the prevalence of vitamin D insufficiency in collegiate athletes and to determine whether 25(OH)D concentrations are related to vitamin D intake, sun exposure, body composition, and risk for illness or athletic injury. Methods: 25(OH) vitamin D concentrations were measured in 41 athletes (18 men/23 women, 12 indoor/29 outdoor athletes) throughout the academic year. Dietary intake and lifestyle habits were assessed via questionnaire, bone density was measured by dual …

Promoting Awareness Of Healthy Eating And Physical Activity In Hispanic Women To Reduce Cancer Risk, Donaji Stelzig, Nathalie Folch, Norma Olvera

International Journal of Exercise Science: Conference Proceedings

Latino population is one of the fastest growing minority groups in the United States. As the Latino population continues to increase, chronic diseases such as cancer and obesity will increase. Thus, the development of interventions that promote awareness of healthy eating and an active lifestyle among Latinos are greatly needed. The purpose of this study was to assess the effectiveness of a community-based wellness intervention for Latino women in promoting healthy eating and physical activity. Method: Twenty-four Latino women between the ages 30-65 years participated in a eight-week intervention that included nutrition education focusing on nutrition labeling, selecting healthy food …

Community Based Nutritition Education: A Model For Raising Awareness Of Childhood Obesity, Selina M. Ahmed

International Journal of Exercise Science: Conference Proceedings

Background: Since 2003, Texas Southern University has coordinated conferences to educate Houston’s Third Ward community about strategies to combat childhood obesity. Presenters included faculty and students as speakers and activity coordinators. Participants indicated that these conferences are helpful in increasing awareness of health problems and the availability of community health resources. Purpose: To address the high rate of childhood obesity in Houston’s Third Ward and its costs in terms of health and long-term productivity on that community, faculty at Texas Southern University (TSU) coordinated annual conferences to educate community members about strategies to combat childhood obesity. Methods: Seven conferences intended …

Know Your Audience: Designing A Nutrition Education Game For Middle School Kids, Vinod Srinivasan, Lars Doucet, Christine Shimek, Cynthia A. Warren, Carol J. Spaulding, Kimberly Paulhill, Catherine J. Mcneal, John David Coppin

International Journal of Exercise Science: Conference Proceedings

Purpose: In recent years video games have emerged as potential tools to tackle obesity. Games that use motion-sensing controllers and interfaces are often used to promote physical activity. Games are also used to impart education about diet, nutrition and health. Our goal in this project is to address childhood obesity through the design, development and implementation of a video game to teach nutrition concepts to middle-school-aged children.

Method: Our target audience is middle-school students in a low-income neighborhood in Dallas. To guide us in the game design, we collected data about students’ gaming preferences through surveys, focus groups and student …

A Community-Academic Partnership To Improve Access To Healthy Foods In Low-Income Communities, Heather Kitzman-Ulrich, Mark Dehaven, Cindy Romero, Nicole Beltran

International Journal of Exercise Science: Conference Proceedings

Purpose: Access to healthy foods is often limited in low-income communities and prevents the adoption of a healthy diet needed to meet national dietary recommendations, reduce chronic disease, and prevent obesity. The Healthy Harvest Community Gardening Partnership is a community-based participatory research program between faith-based organizations, academic institutions, local philanthropy, and other non-profit institutions, created in 2009 for improving access to healthy foods and quality of life through a community garden network. Methods: Healthy Harvest uses a social ecological framework combining individual, interpersonal, and community level influences into a single program, and employs a train-the-trainer approach for providing expertise in …

Middle School Students’ Understanding Of Calories, Energy Expenditure And The Nutrition Facts Panel, John D. Coppin, Catherine J. Mcneal, Carol J. Spaulding, Cynthia A. Warren, Vinod Srinivasan, Christine Shimek, Kimberly Paulhill, Lars Doucet

International Journal of Exercise Science: Conference Proceedings

TORC Abstract

Exercise Attenuates Weight Gain And Fat Accumulation In Cd1- Mice Consuming A High-Fat Diet, Whitney L. Breslin, Kelley Strohacker, Katie C. Carpenter, Nadia H. Agha, Thomas W. Lowder, Brian K. Mcfarlin

International Journal of Exercise Science: Conference Proceedings

Background: Exercise training, in combination with a healthful diet, is a reliable method of weight loss or weight maintenance. It is unknown whether an exercise training program would sufficiently attenuate weight gain during chronic consumption of a high-fat diet. Purpose: Therefore, the purpose of this study was to evaluate the ability of an aerobic exercise training program to prevent excessive weight gain both before and during consumption of a high-fat diet in CD-1 male mice. Methods: Mice were divided into four groups (N=10 mice/group): 4-weeks of treadmill running followed by 6-weeks sedentary (EX-SD), 4-weeks sedentary followed by 6 weeks of …

Mixed High-Fat And Stock Diet Caused A Greater Increase In Body Mass Than High-Fat Diet Alone, Katie C. Carpenter, Tiffany Davidson, Brian K. Mcfarlin

International Journal of Exercise Science: Conference Proceedings

Increased dietary palatability may lead to excess food consumption which in turn causes an excess of caloric intake and weight gain. Although most obesity studies in rodents utilize a high-fat diet, food variation, a combination of different diets for example, may actually increase body weight and fat mass beyond that of solely high-fat feeding. Purpose: To examine the changes in weight gain and body composition in mice that consume either a high-fat diet or a combination of high-fat and stock diet. Methods: 10 CD-1 male mice were randomly assigned to one of two groups based on dietary composition (N=5/group). HF …

Relationship Between Dyslipidemia And Obesity In Children, Elias Humberto Avila-Rodriguez, Armando Avila-Rodriguez, Jesús Maria Araujo-Contreras, Abelardo Camacho-Luis, Alfredo Tellez-Valencia, Nelda Mier, Luis Joel Rodríguez-Ortega, Efren Rivas-Avila

International Journal of Exercise Science: Conference Proceedings

Purpose: Dyslipidemia is a general term that refers to abnormal levels of lipids. The purpose of this research was to determine the relationship among the nutritional state and the percentage of body fat with the levels of lipids in 10 to 13 year old children living in the city of Durango, Mexico. Method: The study was carried out with 823 elementary school children. The selection was done at random. The biochemical studies were done in a subpopulation of 425 children. Each child underwent the following studies: sociodemographic, anthropometric and corporal composition. After fasting overnight, a venous blood sample was obtained. …

The Impact Of Resveratrol On Diet Induced Obesity Changes In Thymic Function, Apeksha A. Gulvady, Henry P. Ciolino, Christopher A. Jolly

International Journal of Exercise Science: Conference Proceedings

Purpose: Progenitor cells, produced in the bone marrow, migrate to the thymus where the thymic microenvironment plays a critical role in their differentiation and maturation into T cells. Fat accumulates in the thymus beginning at 1 year of age, causing the thymus to gradually involute as age progresses, thus resulting in a decline in the production of mature T-cells. Obesity augments thymic fat accumulation and hastens the decline in thymic output. Resveratrol, a phytoalexin produced in plants, has also been shown to regulate fat metabolism, in an attempt to reduce hepatic fat accumulation, via 5' adenosine monophosphate-activated protein kinase (AMPK). …

Exploring Obesity Among Wheelchair Users: Bmi Vs Body Compostion, Katherine Froehlich-Grobe

International Journal of Exercise Science: Conference Proceedings

Author(s): Katherine Froehlich-Grobe, PhD1 & Richard A. Washburn, PhD2 Affiliations: 1 University of Texas School of Public Health, Dallas Regional Campus, 2 Center for Physical Activity and Weight Management, University of Kansas Purpose: Body mass index (BMI) is commonly used to indicate weight status but has been critiqued for being insensitive to body composition. Americans with disabilities have significantly higher obesity rates than those without when BMI has been used as the indicator of weight status. Examining obesity prevalence based on body composition among this group is warranted. As the life expectancy of those with disabilities has increased to approximate …

Relationship Between Leptin And Obesity In Mexican Chidren, Armando Avila-Rodríguez, E.Humberto Avila-Rodríguez, Jesus M. Araujo-Contreras, Abelardo Camacho-Luis, Alfredo Tellez-Valencia, L. Joel Rodríguez-Ortega, Efrén Rivas-Avila

International Journal of Exercise Science: Conference Proceedings

Purpose: The expression and secretion of the leptin are thoroughly related with the regulation of food intake, energy balance and body fat. Obesity is defined as excess of body fat. The purpose of this research was to determine the relationship among the nutritional state and the percentage of body fat with the levels of leptin in 10 to 13 year old children living in the city of Durango, Mexico. Method: The study was carried out with 823 elementary school children. The selection was done at random. The biochemical studies were done in a subpopulation of 425 children. Each child underwent …

Insulin Resistance And Obesity In Mexican Youth, Jesus M. Araujo-Contreras, E. Humberto Avila-Rodriguez, Nohe Vargas-Chavez, Efren Rivas-Avila, Armando Avila-Rodriguez, Abelardo Camacho-Luis, Luis A. Sepulveda-Chapa, Nelda Mier, Alfredo Tellez-Valencia

International Journal of Exercise Science: Conference Proceedings

Purpose: Although research shows that prevalence rates of insulin resistance (IR) is increasing in children, little is known about the impact of obesity in IR in Mexican youth. This study investigated the association between overweight, obesity, and insulin resistance in Mexican adolescents. Methods: Data were collected from 448 adolescents aged 12 to 18 years from a random sample of a high school student population in Durango, Mexico. After fasting overnight, blood samples were obtained from participants. Glucose, insulin, lipid profile, leptin, insulin growth factor, growth hormone, cortisol, TNF-alpha, and C-reactive protein were determined in serum. Body Mass Index (BMI) was …

An Obesity Management Intervention For Hispanic Children In A Pediatric Clinic, Laura A. Rubalcava, Dorothy A. Long Parma, Deborah Parra- Medina, Cynthia M. Mojica

International Journal of Exercise Science: Conference Proceedings

Title: AN OBESITY MANAGEMENT INTERVENTION FOR HISPANIC CHILDREN IN A PEDIATRIC CLINIC: STUDY DESIGN AND BASELINE CHARACTERISTICS Authors: Laura A. Rubalcava, MA, Dorothy A. Long Parma, MD, Deborah Parra-Medina, MPH, PhD, Cynthia M. Mojica, PhD, MPH Affiliation: Institute for Health Promotion Research, Dept of Epidemiology and Biostatistics, University of Texas Health Science Center at San Antonio Purpose: This study describes a pediatric obesity management intervention trial in a rural Hispanic clinic. Methods: Hispanic children aged 5-14 (goal N=200) who are overweight (body mass index [BMI] 85th-94th percentile for age and gender) or obese (BMI ≥ 95th percentile) and a parent …

College Students’ Percieved Barriers And Failitators To Maintaining A Healthy Bodyweight, Timothy K. Jones, Arely Perez, Summmer R. Wilmoth, Bonnie Dillon, Lesli Biediger- Friedman, Meizi He

International Journal of Exercise Science: Conference Proceedings

PURPOSE:

It has been evident that on average college students experienced excess weight gain as they transited from high school. The objectives of this study were to qualitatively explore college students’ perceived barriers and facilitators to maintaining a healthy bodyweight and identify the key modifiable factors underlying unhealthy behaviors.

METHOD:

The study employed photovoice (PV), a qualitative research method, in undergraduate students in South Texas. Participants took pictures and wrote descriptions of three perceived barriers and three facilitators to maintaining a healthy body weight; they were then asked to choose one of each for discussion. Eight focus groups were conducted …

Mediation And Moderation Effects Of The "5 A Day Achievement Badge" Intervention For Boy Scouts, Tracey Ledoux, Kathy Watson, Janice Baranowski, Tom Baranowski

International Journal of Exercise Science: Conference Proceedings

Title: MEDIATION AND MODERATION EFFECTS OF THE “5 A DAY ACHIEVEMENT BADGE” INTERVENTION FOR BOY SCOUTS. Authors: Tracey Ledoux, PhD, RD1, 2, Kathy Watson, PhD2, Janice Baranowski, MPH, RD2, & Tom Baranowski, PhD2 Affiliations: 1Health and Human Performance Department, University of Houston; Children’s Nutrition Research Center, USDA/ARS, Baylor College of Medicine. Purpose: To test the moderating effect of parent value for health (PVH) and mediating effects of fruit and vegetable (FV) availability, FV accessibility, child asking behavior (CAB), and FV preference changes on the relationship between program dose and change in FV consumption from an intervention that increased FV consumption …

Therapeutic Potential Of Insulin-Sensitizing Drugs In The Treatment Of Prostate Cancer With Coexisting Obesity, Alison Schwein, Mong-Hong Lee, Sai-Ching Yeung

International Journal of Exercise Science: Conference Proceedings

TITLE: Insulin-sensitizing Drugs to Treat Obese Prostate Cancer Patients

AUTHORS: Alison Schwein, B.S.1, Dr. Mong-Hong Lee PhD2, Dr. Sai-Ching Yeung PhD, MD2

AFFILIATIONS: 1University of Texas Graduate School of Biomedical Sciences, 2M.D. Anderson Cancer Center

Purpose: Prostate cancer (PC) in obese men is more likely to cause a more aggressive disease that recurs after radical prostatectomy than in non-obese men; also, risks of advanced PC or death from PC are increased when associated with obesity. The biological mechanisms underlying the association between obesity and the progression of PC have yet to be established. Insulin resistance is associated with obesity. Insulin …

The Effects Of Niacin And Aerobic Exercise In Postmenopausal Women Glucose, Insulin And C-Peptide Profiles, Heidi Bidstrup, Yunsuk Koh, James Rowe, David Nichols, Vic Ben-Ezra, Kyle Biggerstaff

International Journal of Exercise Science: Conference Proceedings

Download

A Culturally Friendly Web-Based Hybrid Intervention To Prevent Obesity: The Salsa Study, Scherezade K. Mama, Ashley V. Medina, Raul Orlando Edwards, Lorna Mcneill, Ygnacio Lopez Iii, Rebecca E. Lee

International Journal of Exercise Science: Conference Proceedings

No Abstract

Effects Of Chocolate Milk Supplementation On Recovery From Cycling Exercise And Subsequent Time Trial Performance, Lisa Ferguson-Stegall, Erin Mccleave, Phillip G. Doerner Iii, Zhenping Ding, Benjamin Dessard, Lynne Kammer, Bei Wang, Yang Liu, John L. Ivy

International Journal of Exercise Science: Conference Proceedings

PURPOSE: Supplementing with carbohydrate plus protein following strenuous endurance exercise has been found to improve both recovery and subsequent aerobic endurance performance beyond that of a carbohydrate supplement alone. The purpose of the present study was to compare the effects of chocolate milk (CM), an isocaloric carbohydrate only supplement (CHO), and placebo (PLA) on markers of endurance exercise recovery and subsequent time trial performance in trained cyclists. METHODS: Ten trained male and female cyclists (5 males, 5 females) performed 3 trials in which they first cycled for 1.5 h at 70% of VO2max, followed by 10 min of intervals that …