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- Member of: Theses and Dissertations
Description
Objectives: To investigate the potential of vinegar supplementation as a means for reducing visceral fat in healthy overweight and obese adults, and to evaluate its effects on fasting blood glucose and fasting insulin.
Subjects and Methods: Forty-five sedentary overweight and obese adult participants with a waist circumference greater than 32 inches for women and 37 inches for men were randomly assigned to one of two groups, the vinegar group (VIN, n=21) or the control group (CON, n=24), and instructed to consume either two tablespoons of liquid red wine vinegar (3.6g acetic acid) or a control pill (0.0225g acetic acid) twice daily at the beginning of a meal for 8 weeks. Participants were also instructed to maintain normal diet and physical activity levels. Anthropometric measures, dual-energy x-ray absorptiometry (DXA) scans, blood samples, and 24-hour dietary recalls were collected at baseline and at end of trial. A compliance calendar was provided for daily tracking of vinegar supplementation.
Results: Compliance to vinegar supplementation averaged 92.7 ±13.3% among the VIN group and 89.1 ±18.9% among the CON group. There were no statistically significant differences in anthropometric measurements between baseline and week 8: weight (P=0.694), BMI (P=0.879), and waist circumference (P=0.871). Similarly, DXA scan data did not show significant changes in visceral fat (P=0.339) or total fat (P=0.294) between baseline and week 8. The VIN group had significant reductions in fasting glucose (P=0.003), fasting insulin (P <0.001), and homeostatic model assessment of insulin resistance scores (P <0.001) after treatment.
Conclusions: These data do not support the findings from previous studies that indicated a link between vinegar supplementation and increased fat metabolism, specifically visceral fat reduction.
Subjects and Methods: Forty-five sedentary overweight and obese adult participants with a waist circumference greater than 32 inches for women and 37 inches for men were randomly assigned to one of two groups, the vinegar group (VIN, n=21) or the control group (CON, n=24), and instructed to consume either two tablespoons of liquid red wine vinegar (3.6g acetic acid) or a control pill (0.0225g acetic acid) twice daily at the beginning of a meal for 8 weeks. Participants were also instructed to maintain normal diet and physical activity levels. Anthropometric measures, dual-energy x-ray absorptiometry (DXA) scans, blood samples, and 24-hour dietary recalls were collected at baseline and at end of trial. A compliance calendar was provided for daily tracking of vinegar supplementation.
Results: Compliance to vinegar supplementation averaged 92.7 ±13.3% among the VIN group and 89.1 ±18.9% among the CON group. There were no statistically significant differences in anthropometric measurements between baseline and week 8: weight (P=0.694), BMI (P=0.879), and waist circumference (P=0.871). Similarly, DXA scan data did not show significant changes in visceral fat (P=0.339) or total fat (P=0.294) between baseline and week 8. The VIN group had significant reductions in fasting glucose (P=0.003), fasting insulin (P <0.001), and homeostatic model assessment of insulin resistance scores (P <0.001) after treatment.
Conclusions: These data do not support the findings from previous studies that indicated a link between vinegar supplementation and increased fat metabolism, specifically visceral fat reduction.
ContributorsGonzalez, Lisa Ann (Author) / Johnston, Carol (Thesis advisor) / Mayol-Kreiser, Sandra (Committee member) / McCoy, Maureen (Committee member) / Arizona State University (Publisher)
Created2019
Description
High childhood obesity rates have resulted in many interventions to attempt to lower these rates. Interventions such as day camps, residential camps, therapy-based interventions and family-based interventions lead to changes in weight and self-esteem but family-based intervention leads to the longest-term success for children ages nine to 17. Analysis of the interventions was measured using tools such as BMI, BMI-percentiles, and weight. Psychological measures such as self-esteem, happiness, and quality of life analysis was preferred, however were not measured in all studies. While most interventions resulted in weight loss and increased self-esteem, results were often not long-term. Studies provided evidence that family-based therapy has potential to last long-term, however there is a lack of research. To determine the most effective childhood nutrition intervention research must conduct follow-ups for many years after the initial intervention to ensure they provide long-term results.
ContributorsAnderson, Megan Lee (Author) / McCoy, Maureen (Thesis director) / Kniskern, Megan (Committee member) / College of Health Solutions (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
University students currently lack sufficient knowledge and resources needed to support healthy eating patterns and nutrition. Comparison of the number of registered dietitians that are available to all students, along with the number of wellness events that are held at each university within the Pacific-12 conference will help determine which schools are best able to support their students' needs. Data was collected using a Google forms survey sent via email to wellness directors of each of the universities in the Pac-12 conference. Eight out of the twelve schools in the conference responded to the survey. The average number of dietitians available to all students (regardless of athlete status) was found to be 1.43 dietitians. Of the schools that responded, the University of Colorado, Boulder, has the most resources dedicated to student nutrition wellness with three dietitians available for all undergraduate students, free dietitian services, and approximately 150 wellness events each year. The success of available nutrition wellness resources was inconclusive as schools did not provide the information regarding student utilization and attendance. Future university promoted nutrition wellness programs should increase the number of affordable dietitians and total wellness events, as well as promote student health services through social media platforms to improve student nutrition knowledge and usage of resources.
ContributorsCurtin, Anne Clare (Author) / Dixon, Kathleen (Thesis director) / McCoy, Maureen (Committee member) / School of Nutrition and Health Promotion (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
Background While extensive research has been conducted among college students consuming alcohol with energy drinks, there is limited research exploring how extracurricular activities could have an impact on energy drink consumption and sleep. Understanding the association between student involvement and the impact it could have on sleep and energy drink consumption among college freshmen is essential in promoting healthy behaviors while in college. Objectives The purpose of this study was to understand the relationship between student involvement, average hours of sleep, and predicted prevalence of energy drink and coffee consumption amongst college freshmen living in residence halls at a large, public university in the Southwest. Student involvement and fewer hours of sleep hypothesized to observe higher energy drink consumption. Methods This study was a secondary data analysis of the second wave of the longitudinal SPARC (Social impact of Physical Activity and nutRition in College) study assessing college freshmen (n=599; 70.6% female; 50.9% non-white) living on campus. Students were enrolled in this study during the 2015\u20142016 school year. Mutually adjusted generalized estimating equation (GEE) binomial models examined the relationship between involvement (academic clubs, sport clubs, honors, taking 16 or more credit hours, and having a job) and sleep with energy drink and coffee consumption, controlling for gender, race/ethnicity, Pell grant status, ever having tried alcohol, and clustering of students in residence halls. Results On average, students were enrolled in 15 credits, slept an average 8 hours per night, those who had a job worked 14 hours for pay per week, 35% reported consuming energy drinks in the past week, and about 29% of students reported coffee consumption. Males showed a higher predicted prevalence of energy drink consumption compared to females (p<0.001), where females showed a higher predicted prevalence of coffee consumption compared to males (<0.001); energy drink consumption was less prevalent amongst Hispanic students compared to white students (p=0.018), but more prevalent amongst black students compared to white students (p=0.002); no associations between race were found in predicted prevalence of coffee consumption. Average hours of sleep per night was inversely associated with energy drink consumption predicted prevalence (p<0.001). There was a lower predicted prevalence of energy drink and coffee consumption in honors student status (p<0.001) compared to non-honors students. Students taking 16 or more class credit hours showed a higher predicted prevalence in both energy drink (p=0.050) and coffee consumption (p=0.023) compared to students taking less than 16 class credit hours. Students involved in physically active clubs showed a greater predicted prevalence of coffee consumption (p<0.001) compared to students not in physically active clubs. There was no difference in the predicted prevalence in energy drink consumption amongst students involved in physically active clubs (p=0.710), non-physically active clubs (p=0.493), and having a job (p=0.146). Coffee consumption predicted prevalence showed no significant prevalence amongst students of different race and ethnicity [Black (p=0.507), Hispanic (p=103), Other (p=116)] as well as students involved in non-physically active (p=0.839) clubs and who had a paid job (p=0.088). Conclusion Associations observed between average hours of sleep, the different types of involvement of student activities, and energy drink and coffee consumption, were interesting in that a few findings were found to be contrary to the hypotheses. Future research should delve deeper into student involvement within honors programs to understand the contextual factors of why these students showed a significant inverse association in energy drink consumption. Contrary to hypothesis, sleep and energy drink consumption prevalence were indirectly related leading future research to examine and understand why students are consuming energy drinks since on average participants were meeting recommended sleep guidelines. Nutrition interventions are needed for the groups at consuming energy drinks and alcohol in combination due to the study finding increased predicted prevalence amongst these groups as well as the increased risky health behavior associated with the combination found in the literature. Support or Funding Information This study was supported by the NIH Common Fund from the Office of the Director and the Office of Behavioral and Social Sciences Research, grant number 1DP5OD017910-01 (PI: M. Bruening). The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.
ContributorsBender, Rebecca Leigh (Author) / Bruening, Meg (Thesis director) / McCoy, Maureen (Committee member) / Brennhofer, Stephanie (Committee member) / School of Sustainability (Contributor) / School of Nutrition and Health Promotion (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
One of the great difficulties in leading America to become a healthier nation involves overcoming the socioeconomic disparity that exists between income and health literacy. Impoverished communities consistently lack the proper health education to make quality food purchases and healthy lifestyle choices, leading to higher rates of obesity. Through FitPHX Energy Zones, an after-school program designed to encourage Phoenix youths to lead healthier lifestyles through an innovative use of library spaces, I provided health education and opportunities for physical activity for 8 to 14-year-olds in underserved Phoenix communities. However, although this intervention made significant progress with the kids' health literacy development over the course of the program, it is difficult for community-based intervention programs to continue in the long run due to budget or other extraneous circumstances. Once the program ends, there needed to be a way to continue to reach the kids beyond the scope of the program such that they can continue to experience the lessons taught during the program. Following the conclusion of FitPHX, I created an interactive book for the kids I worked with to help them retain the health and nutrition knowledge taught during the program.
ContributorsBejarano, Michael Carlos (Author) / McCoy, Maureen (Thesis director) / Williams, Deborah (Committee member) / Harrington Bioengineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
People have become increasingly perceptive in their health and well being. As a result, people are directing their attention to unconventional diet choices. A number of individuals are turning to a veganism. In 2017, six percent of Americans identified as vegan, up from only one percent in 2014. A vegan diet has been scientifically shown to have many health benefits when compared to the average western diet, which is typically inadequate in fruits, vegetables, legumes, whole grains, and contains excessive amounts of processed foods, alcohol, salt, red meat, and sugar. With its gain in popularity, and more people adopting the diet, comes a lot of controversies. There are many who support and advocate for it, including a number of celebrities, and health organizations like the American Diabetes Association and USDA. However, many people remain skeptical about its purpose and proposed benefits. There is a general lack of knowledge when it comes to veganism. The purpose of this study was to assess the attitudes and beliefs held by college students at Arizona State University about a vegan diet. A survey was prepared and later distributed to students of different majors across Arizona State University. A total of 100 students completed the survey. The results revealed that ASU students had varying beliefs in regard to a vegan diet, some accurate beliefs, and other inaccurate beliefs. In general, the vegan participants tend to be more accurate in their knowledge of a vegan diet, however, no statistical differences were found among the vegan and non-vegan (includes vegetarian, pescatarian and omnivorous) participants. Supplemental research should include a larger sample of vegan participants and should examine behavioral differences among vegans and non-vegans.
ContributorsZwinger-Nathanson, Gidette Michelene (Author) / Levinson, Simin (Thesis director) / McCoy, Maureen (Committee member) / School of Nutrition and Health Promotion (Contributor) / Barrett, The Honors College (Contributor)
Created2018-12
Description
The purpose of this study was to gain greater insight on the educational growth and experience of children who visit the Halle Heart Children's Museum, by analyzing and exploring student thank you letters received from 2011-2016. Of the major contributors of cardiovascular disease taught in the museum, nutrition was discussed about most in the letters (42.6%). Children are able to learn about health related topics in museums, as evidenced by recall of topics and facts in student letters. Museums can be an influential and education experience for children, especially museums teaching about health related topics.
ContributorsRobertson, Kara Christie (Author) / Bruening, Meredith (Thesis director) / McCoy, Maureen (Committee member) / School of Nutrition and Health Promotion (Contributor) / Barrett, The Honors College (Contributor)
Created2017-12
Description
Food shopping practices are important in promoting healthy eating habits. Whereas previous behavioral interventions have assessed the effects of such interventions on parent and child health behaviors and quality, few have examined their impact on food shopping practices. This study used a randomized controlled trial design to investigate the efficacy of Athletes for Life (AFL), a 12-week community-based, family-focused intervention program that targeted physical activity and dietary behavior, on food shopping practices among Latino parents with elementary school-aged children. A total of 140 Latino adults were randomized to the AFL intervention or a wait-list control group. AFL included weekly sessions that focused on nutrition education, meal planning, grocery shopping, and physical activity. Participants completed surveys at baseline and after the 12-week program to assess their frequency of use of healthy food shopping practices (i.e., nutrition facts panel use, ingredients list use, grocery list utilization), and whether they refer to specific nutrients within the nutrition facts panel. Intervention effects on the frequency of use of food shopping practices were analyzed using a logistic binomial regression. Effects on consulting specific nutrients within the nutrition facts panel were analyzed using a Quade’s analysis of covariance. Results showed that there was a significant increase in the utilization of grocery lists (2.45±1.42 vs. 1.64±1.57, p=.011, F=6.664), nutrition facts panels (2.76±1.30 vs. 1.40±1.24, p=<.0001, F=47.128), and ingredients lists (2.79±1.26 vs. 1.58±1.51, p=<.0001, F=20.055) among the intervention group participants. Additionally, participants in the intervention group increased their use of nutrition facts panels to look up individual nutrients, particularly calories (OR=4.162, 95% CI=1.762-9.833, p=.009), carbohydrates (OR=7.889, 95% CI=2.136-29.137, p=.018), protein (OR=12.013, 95% CI=2.479-58.222, p=.018), and sodium (OR=4.247, 95% CI=1.624-11.105, p=.027), compared to baseline use. These findings demonstrate that the AFL intervention program was successful in implementing a positive change among parents, which will presumably allow parents to make improvements in their food shopping behaviors that may in turn have an effect on their home food environment and dietary intake among adults and children within the home.
ContributorsCampoy, Mariah Rose (Author) / Vega-Lopez, Sonia (Thesis advisor) / Crespo, Noe (Committee member) / McCoy, Maureen (Committee member) / Arizona State University (Publisher)
Created2023
Description
On average, children from low socioeconomic backgrounds tend to eat around half of their fruit and vegetable intake from the National School Lunch Program (NSLP). If it weren’t for this national program, the majority of these children would not come close to achieving the recommended intake for fruits and vegetables (FV), which can be defined as one to two cups of fruits daily and one to three cups of vegetables daily. The reasons for such a statement are puzzling; the prices for FV have stayed relatively the same over time. In addition, the increase in frozen and canned FV are not only relatively inexpensive, but their packaging helps increase the lifespan of the product. Why then are children, especially in families from low socioeconomic settings, not meeting these daily requirements? After reading many articles, I have concluded that one of the main factors is finance. It can be costly, in terms of time as well as financially, to buy fresh products and take time out of the day to prepare a meal, especially when fast-food restaurants can provide a cheap and satisfying meal in a fraction of the time. Another factor influencing the lack of FV consumption in children is time; many parents have long work hours and perhaps do not have enough time in their day to prepare complex and nutritious meals. Lastly, another factor that must be considered is the possibility of living in a food desert: an area in which there is limited access to nutritious foods within half a mile walking distance. It is because of these reasons that I would like to discuss different ways to help children reach the recommended daily value for FV intake in more detail.
ContributorsKhaled, Dalia (Author) / Grgich, Traci (Thesis director) / McCoy, Maureen (Committee member) / Barrett, The Honors College (Contributor) / School of Life Sciences (Contributor) / College of Health Solutions (Contributor)
Created2021-12
Description
The purpose of this study was to conduct a qualitative investigation to provide a baseline understanding of the typical experiences of food insecure college students and their understanding of what it means to be food insecure. Because of the stigma that is associated with food insecurity and emergency food resources, it may be difficult for students to discuss these topics openly with university administration or even with each other. For this reason, an asynchronous remote community allowed students to share their experiences anonymously. The narrative data collected in this study is meant to share the stories of students who live with the reality of food insecurity every day.
ContributorsVemuri, Renuka (Author) / Pacheco, Lindsay (Co-author) / Stabile, Diana (Co-author) / McCoy, Maureen (Thesis director) / Pine, Kathleen (Committee member) / Barrett, The Honors College (Contributor) / College of Health Solutions (Contributor)
Created2022-05