Digital Commons Network^™

Zeta Potential Measurements For Surface Modification Of Plastic Substrates For Nanofluidic Biosensors, Qinhan Liu

LSU Master's Theses

Polymeric materials have revealed their great potentials in micro- and nano- fluidic devices for biosensing. Their advantages include low cost, various physicochemical properties, well-developed fabrication, and surface modification protocols comparing with traditional materials such as silicon or glass. Surface modification consists an essential step in fabrication of polymer-based biosensors. A proper characterization is required to justify the effectiveness of modifications on polymer surface. For nanofluidic devices, special phenomena such as overlapped electrical double layer, ion rectification and electroosmosis flow can dominate the behavior of single molcules. The concept of surface charge density plays a key role in nanofluidic devices due …

Effects Of Testosterone Undecanoate On Performance During Multi-Stressor Military Operations: A Trial Protocol For The Optimizing Performance For Soldiers Ii Study, Alyssa N. Varanoske, Melissa N. Harris, Callie Hebert, Emily E. Howard, Neil M. Johannsen, Steven B. Heymsfield, Frank L. Greenway, Lee M. Margolis, Harris R. Lieberman, David D. Church, Arny A. Ferrando, Jennifer C. Rood, Stefan M. Pasiakos

Clinical Research Faculty Publications

Background: Previously, young males administered 200 mg/week of testosterone enanthate during 28 days of energy deficit (EDef) gained lean mass and lost less total mass than controls (Optimizing Performance for Soldiers I study, OPS I). Despite that benefit, physical performance deteriorated similarly in both groups. However, some experimental limitations may have precluded detection of performance benefits, as performance measures employed lacked military relevance, and the EDef employed did not elicit the magnitude of stress typically experienced by Soldiers conducting operations. Additionally, the testosterone administered required weekly injections, elicited supra-physiological concentrations, and marked suppression of endogenous testosterone upon cessation. Therefore, this …

Patient-Reported Outcomes After Metabolic Surgery Versus Medical Therapy For Diabetes: Insights From The Stampede Randomized Trial, Ali Aminian, Sangeeta R. Kashyap, Kathy E. Wolski, Stacy A. Brethauer, John P. Kirwan, Steven E. Nissen, Deepak L. Bhatt, Philip R. Schauer

Division of Basic Science Faculty Publications

Objective:The aim of this study was to investigate the long-term effects of medical and surgical treatments of type 2 diabetes mellitus (T2DM) on patient-reported outcomes (PROs).Background:Robust data on PROs from randomized trials comparing medical and surgical treatments for T2DM are lacking.Methods:The Surgical Treatment And Medications Potentially Eradicate Diabetes Efficiently (STAMPEDE) trial showed that 5 years after randomization, Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) were superior to intensive medical therapy (IMT) alone in achieving glycemic control in patients with T2DM and obesity. A subset of 104 patients participating in the STAMPEDE trial were administered two generic health-related quality of …

Effects Of Experimental Sleep Restriction On Ambulatory And Sleep Blood Pressure In Healthy Young Adults: A Randomized Crossover Study, Naima Covassin, Jan Bukartyk, Prachi Singh, Andrew D. Calvin, Erik K. St Louis, Virend K. Somers

Clinical Research Faculty Publications

Although insufficient sleep is associated with increased cardiovascular risk, evidence of a causal relationship is lacking. We investigated the effects of prolonged sleep restriction on 24-hour ambulatory blood pressure (BP) and other cardiovascular measures in 20 healthy young participants (aged 23.4±4.8 years, 9 females), who underwent a randomized, controlled, crossover, 16-day inpatient study consisting of 4 days of acclimation, 9 days of sleep restriction (4 hours of sleep/night) or control sleep (9 hours), and 3 days of recovery. Subjects consumed a weight maintenance diet with controlled nutrient composition throughout. A 24-hour BP (primary outcome) and cardiovascular biomarkers were measured repeatedly. …

Translating Family-Based Behavioral Treatment For Childhood Obesity Into A User-Friendly Digital Package For Delivery To Low-Income Families Through Primary Care Partnerships: The Mo-Cord Study, Lauren A. Fowler, Sarah E. Hampl, Meredith L. Dreyer Gillette, Amanda E. Staiano, Chelsea L. Kracht, Andrea K. Graham, Sherri Gabbert, Kelly Springstroh, Fanice Thomas, Lisa Nelson, Aubrie E. Hampp, Jordan A. Carlson, Robinson Welch, Denise E. Wilfley

Population and Public Health Science Faculty Publications

Background: Significant gaps exist in access to evidence-based pediatric weight management interventions, especially for low-income families. As a part of the Centers for Disease Control and Prevention's Childhood Obesity Research Demonstration project 3.0 (CORD), the Missouri CORD (MO-CORD) team aims to increase access to and dissemination of an efficacious pediatric obesity treatment, family-based behavioral treatment (FBT), among low-income families. This article describes the MO-CORD team's approach to translating FBT into a digital package for delivery to low-income families through primary care practices. Methods: Using digital technology, the primary care setting, and existing reimbursement mechanisms, the MO-CORD team is developing a …

Organic Cotton Clothing Purchase Behavior: A Comparative Study Of Consumers In The United States And Bangladesh, Md Nakib Ul Hasan, Chuanlan Liu, Bulbul Ahmed

Faculty Publications

The purpose of this research was to evaluate the differences and similarities of organic cotton clothing (OCC) purchase behaviors of the consumers who lie at the top and the bottom of the apparel supply chain. The influences of consumers’ sustainability knowledge and social norms on consumers’ attitudes and purchase intentions were examined to understand within the framework of the Theory of Reasoned Action (TRA). Sample data were collected from the United States and Bangladesh and, finally, 136 useable responses were used for the data analysis. Among the useable responses, 85 samples were from the US (containing 91.76% female participants and …

A Continuous Adjustment: The Impact Of Covid-19 On International Graduate Students, Carla Albornoz Moraga

LSU Doctoral Dissertations

International graduate students have endured unique obstacles during the COVID-19 pandemic. This study explored the experiences of eight international graduate students from various countries and academic backgrounds. The following questions guided this study: (1) What were the experiences during the 2020 school year for international students throughout COVID- 19?; (2) What were the day-to-day experiences of international graduate students during COVID- 19?, and (3) How did the international graduate students cope and adjust as they lived through a pandemic? Analysis of the data demonstrated the impact on the international graduate students’ preconceived expectations of the academic and socio-cultural experiences, as …

Investigating The Determinants Of Student Low Enrollment In Historically Black Colleges And Universities (Hbcus): The Case Of One Hbcu In The South, Anthony Trumaine Jackson

LSU Doctoral Dissertations

There is an undeniable fact that enrollment management efforts on academic campuses have become an integral part of campus finance and the backbone of accreditation. Many Historically Black Colleges and Universities (HBCUs) are on the verge of collapsing and even losing their accreditations due to low enrollment, a decline that has been observed in recent decades.

Therefore, this study investigated why students are not enrolling in HBCUs. The study further explored the perceived factors that are likely to contribute to low student enrollment at HBCUs and the role financial matters play in student enrollment. To address this gap in the …

Internal Entrapment And Fearlessness About Death As Precipitants Of Suicidal Thoughts And Planning In The Context Of Post-Traumatic Stress Disorder (Ptsd), D Nicolas Oakey-Frost

LSU Master's Theses

The post-traumatic stress disorder (PTSD) and suicidal thoughts and behaviors (STB) relationship has been extensively studied but potential explanatory mechanisms remain inconclusive. Entrapment is one variable that evinces a theoretical and empirical mechanistic relationship with PTSD and STB. Further, entrapment and fearlessness about death (FAD) have not been linked but are hypothesized to interact in a way that facilitates vulnerability for intense suicidal thinking and potentially suicidal behavior. The current study examined the indirect effect PTSD symptoms have on suicidal ideation, planning, and likelihood of future suicide attempt through both internal (IE) and external entrapment (EE), moderated by levels of …

The Bidirectional Effects Of Serious Conduct Problems, Anxiety, And Trauma Exposure: Implications For Our Understanding Of The Development Of Callous-Unemotional Traits, Emily Lynne Robertson

LSU Doctoral Dissertations

The association of anxiety and trauma with childhood conduct problems has long been the focus of research, and more recently this area of research has become critical to understanding the development of callous-unemotional (CU) traits. Research in samples of children and adolescents has indicated that those elevated on both CU traits and anxiety seem to show more severe externalizing behaviors and are more likely to show histories of trauma. These findings have typically been interpreted as being indicative of a unique casual pathway to CU traits in those high on anxiety. However, an alternative explanation is that the higher rates …

The Emergence Of The Legitimacy Of Religious Healing Knowledge In Taiwan, Wei-Cheng Chiu

LSU Doctoral Dissertations

This dissertation investigates how religious healing knowledge has been defined and used by scholars, physicians, and New Agers and how religious healing knowledge emerged as a legitimate area of knowledge in Taiwan. The key position of religious healing knowledge within the entanglement between religion and spirituality is also examined. After the martial law was lifted in 1987, Taiwan’s society had rapidly diversified, and its religions were at the transition point between the old and the new. Meanwhile, the new spirituality culture was introduced into Taiwan in the 1980s and got popular in the 1990s, and it inherited the trend of …

Using Performance Cues As A Memorization Strategy With Group Piano Students By Implementing Teacher And Student-Directed Learning Approaches, Maria Eduarda Lucena Vieira

LSU Doctoral Dissertations

Multiple researchers have explored the use of performance cues in memorization for music students, suggesting that it is an effective method for memorization (Chaffin & Imreh, 2002; Gerling & Dos Santos, 2017; Hallam et al., 2008). Based on the current literature about the use of memorization strategies, researchers have found a method of a secure, solid, and effective technique called Performance Cues (Chaffin & Imreh, 2002; Hallam et al, 2008). When working with students, the teacher can guide them with steps to understand how the music works and help them to find a secure memorization process where they will feel …

Covid-19 Influences On Us Recreational Angler Behavior, Stephen R. Midway, Fraser Andrew Januchowski-Hartley, Abigail J. Lynch, Brandon K. Peoples, Michael Dance, Rex Caffey

Faculty Publications

No abstract provided.

Daily Energy Expenditure Through The Human Life Course, Herman Pontzer, Yosuke Yamada, Hiroyuki Sagayama, Philip N. Ainslie, Lene F. Andersen, Liam J. Anderson, Lenore Arab, Issaad Baddou, Kweku Bedu-Addo, Ellen E. Blaak, Stephane Blanc, Alberto G. Bonomi, Carlijn V.C. Bouten, Pascal Bovet, Maciej S. Buchowski, Nancy F. Butte, Stefan G. Camps, Graeme L. Close, Jamie A. Cooper, Richard Cooper, Sai Krupa Das, Lara R. Dugas, Ulf Ekelund, Sonja Entringer, Terrence Forrester, Barry W. Fudge, Annelies H. Goris, Michael Gurven, Catherine Hambly, Asmaa El Hamdouchi, Marjije B. Hoos, Sumei Hu, Noorjehan Joonas

Faculty Publications

Total daily energy expenditure (“total expenditure”) reflects daily energy needs and is a critical variable in human health and physiology, but its trajectory over the life course is poorly studied. We analyzed a large, diverse database of total expenditure measured by the doubly labeled water method for males and females aged 8 days to 95 years. Total expenditure increased with fat-free mass in a power-law manner, with four distinct life stages. Fat-free mass-adjusted expenditure accelerates rapidly in neonates to ~50% above adult values at ~1 year; declines slowly to adult levels by ~20 years; remains stable in adulthood (20 to …

Initial Weight Change And Long-Term Changes In Weight And Compensation During Supervised Exercise Training, James L. Dorling, Christoph Höchsmann, S. Nicole Fearnbach, John W. Apolzan, Daniel S. Hsia, Neil M. Johannsen, Tim I.M.S. Church, Corby K. Martin

Clinical Research Faculty Publications

Introduction Our primary aim was to investigate the association between initial weight change and longer-term changes in weight and compensation (predicted weight loss-observed weight loss) during exercise. As secondary aims, we investigated if initial weight change was related to change in cardiometabolic risk markers and energy balance modulators. Methods Two 6-month randomized controlled exercise trials conducted in individuals with overweight or obesity were analyzed (study 1, n = 312; study 2, n = 102). In both studies, participants in an exercise condition (4 kcal·kg-1·wk-1 [KKW], 8 KKW, 12 KKW, or 20 KKW) were split into tertiles based on percent weight …

The Neural Underpinnings Of Processing Newly Taught Semantic Information: The Role Of Retrieval Practice, Eileen Haebig, Laurence B. Leonard, Patricia Deevy, Jennifer Schumaker, Jeffrey D. Karpicke, Christine Weber

Faculty Publications

Purpose: Recent behavioral studies have demonstrated the effectiveness of implementing retrieval practice into learning tasks for children. Such approaches have revealed that repeated spaced retrieval (RSR) is particularly effective in promoting children’s learning of word form and meaning information. This study further examines how retrieval practice enhances learning of word meaning information at the behavioral and neural levels. Method: Twenty typically developing preschool children were taught novel words using an RSR learning schedule for some words and an immediate retrieval (IR) learning schedule for other words. In addition to the label, children were taught two arbitrary semantic features for each …

Bullying Experiences, Body Esteem, Body Dissatisfaction, And The Moderating Role Of Weight Status Among Adolescents, Lauren A. Fowler, Chelsea L. Kracht, Kara D. Denstel, Tiffany M. Stewart, Amanda E. Staiano

Population and Public Health Science Faculty Publications

Introduction: The present study examined the relationships between bullying victimization experiences, body esteem (BE), and body dissatisfaction (BD) by obesity status. Methods: Using a cross-sectional design, adolescents (10-16y) from the U.S. completed surveys. Weight and height were objectively assessed. Bullying was assessed using the Personal Experiences Checklist, with a total score that included three subscales (cyber, verbal-relational, and physical). BE was assessed using total score on the BE Scale, and BD was assessed using the Body Image Assessment for Pre-Adolescents, operationalized as the discrepancy between current and ideal body figure. Linear regression models, controlling for sociodemographics, were used to examine …

Changes In Mood And Health-Related Quality Of Life In Look Ahead 6 Years After Termination Of The Lifestyle Intervention, Thomas A. Wadden, Ariana M. Chao, Harelda Anderson, Kirsten Annis, Karen Atkinson, Paula Bolin, Phillip Brantley, Jeanne M. Clark, Mace Coday, Gareth Dutton, John P. Foreyt, Edward W. Gregg, Helen P. Hazuda, James O. Hill, Van S. Hubbard, John M. Jakicic, Robert W. Jeffery, Karen C. Johnson, Steven E. Kahn, William C. Knowler, Mary Korytkowski, Cora E. Lewis, Blandine Laferrère, Roeland J. Middelbeek, Medha N. Munshi, David M. Nathan, Rebecca H. Neiberg, Scott J. Pilla, Anne Peters, Xavier Pi-Sunyer, Jack W. Rejeski, Bruce Redmon, Tiffany Stewart, Elizabeth Vaughan

Population and Public Health Science Faculty Publications

Objective: The Action for Health in Diabetes (Look AHEAD) study previously reported that intensive lifestyle intervention (ILI) reduced incident depressive symptoms and improved health-related quality of life (HRQOL) over nearly 10 years of intervention compared with a control group (the diabetes support and education group [DSE]) in participants with type 2 diabetes and overweight or obesity. The present study compared incident depressive symptoms and changes in HRQOL in these groups for an additional 6 years following termination of the ILI in September 2012. Methods: A total of 1,945 ILI participants and 1,900 DSE participants completed at least one of four …

Preventing Struck-By Hazards: Defying Risk-Habituation Via Virtual Accident Simulation, Changbum Ahn

Publications

Repeated exposure to struck-by hazards in road work zones generates workers’ habituation to risks related to those hazards, a key contributor to accidents in road work zones. Thus, analyzing the development of risk habituation and providing proper intervention are crucial to preventing accidents in road work zones. In this context, this study employs a virtual reality (VR) environment as a behavioral intervention tool to investigate its effect on mitigating a decline in workers’ vigilance with habituation to hazards in workplaces. A virtual environment that simulates a road maintenance task was developed and used to repeatedly expose subjects to struck-by hazards …

Physical Activity Behaviours In Adolescence: Current Evidence And Opportunities For Intervention, Esther M.F. Van Sluijs, Ulf Ekelund, Inacio Crochemore-Silva, Regina Guthold, Amy Ha, David Lubans, Adewale L. Oyeyemi, Ding Ding, Peter T. Katzmarzyk

Population and Public Health Science Faculty Publications

Young people aged 10–24 years constitute 24% of the world's population; investing in their health could yield a triple benefit—eg, today, into adulthood, and for the next generation. However, in physical activity research, this life stage is poorly understood, with the evidence dominated by research in younger adolescents (aged 10–14 years), school settings, and high-income countries. Globally, 80% of adolescents are insufficiently active, and many adolescents engage in 2 h or more daily recreational screen time. In this Series paper, we present the most up-to-date global evidence on adolescent physical activity and discuss directions for identifying potential solutions to enhance …

Online-Delivered Group And Personal Exercise Programs To Support Low Active Older Adults' Mental Health During The Covid-19 Pandemic: Randomized Controlled Trial, Mark R. Beauchamp, Ryan M. Hulteen, Geralyn R. Ruissen, Yan Liu, Ryan E. Rhodes, Colin M. Wierts, Katrina J. Waldhauser, Samantha H. Harden, Eli Puterman

Faculty Publications

Background: In response to the COVID-19 pandemic, experts in mental health science emphasized the importance of developing and evaluating approaches to support and maintain the mental health of older adults.

Objective: The aim of this study was to assess whether a group-based exercise program relative to a personal exercise program (both delivered online) and waitlist control (WLC) can improve the psychological health of previously low active older adults during the early stages of the COVID-19 pandemic.

Methods: The Seniors COVID-19 Pandemic and Exercise (SCOPE) trial was a 3-arm, parallel randomized controlled trial conducted between May and September 2020 in which …

Challenging The Illusion Of Diversity: A New Theoretical Paradigm Towards Newsroom Inclusion., Paromita Saha

LSU Doctoral Dissertations

Over the past forty years, the news industry has attempted to diversify the racial composition of their newsrooms from the perspective of representing their markets better mirroring best business practices in the industry. The statistics show that an affirmative style of recruitment has produced minimal, superficial results with a high turnover of minority journalists who are hardly promoted to editorial positions, as well as skewed representations of minority racial groups. The literature indicates that hegemonic ideological forces and the White male professional ethos behind journalism is not conducive to minority journalists producing meaningful changes to news content. My study indicates …

Improving Inhibitory Control In A Kindergarten Classroom, Kaitlyn Theresa Lambert

LSU Master's Theses

BACKGROUND: Executive function skills are critical in early development, as they “form the foundation for children’s ability to self-regulate” (McLelland et al., 2016, p. 242). Inhibitory control, one component of executive function, is the ability to suppress or inhibit responses to distractions when completing a task (Nguyen & Duncan, 2019). OBJECTIVE: The purpose of this study was to improve children’s inhibitory control in the classroom through age-appropriate games, which promote controlling emotions and remaining on task. METHODS: Three target children were observed in the classroom they attend with their regular teacher. Baseline data revealed that the target children needed improvement …

Understanding The Association Between Loneliness And Callous-Unemotional Traits In Young Adults, Tatiana Michelle Matlasz

LSU Doctoral Dissertations

One of the defining features of callous-unemotional (CU) traits is a lack of distress or care about performance in important activities or the negative effects of one’s behavior on others. However, recent research has found a significant relationship between CU traits and loneliness, suggesting individuals with elevated CU traits may be aware of impaired social functioning and care about their performance in social relationships. Given this somewhat surprising finding, the current study sought to identify possible explanations for this association. Specifically, we tested the following potential mediators of the relationship between CU traits and loneliness: peer rejection, relationship quality, social …

The Examination Of Racial Identity Of Black Males Through Self-Efficacy, Social Integration, Persistence, And Mentorship At A Predominantly White Institution, Marvin Earl Dupiton

LSU Doctoral Dissertations

Black males account for 4.3% of the total enrollment at four-year postsecondary institutions in the United States. The percentage of Black men who are enrolled in college is nearly the same as it was in 1976 (Harper, 2006a; Palmer & Strayhorn, 2008; Strayhorn, 2008a, 2010). With this low exponential growth of Black males attending institutions of higher education, there is the assumption that institutions have not done much to provide for this population of students that are recruited consistently to attend these universities. Black males do not have enough resources to reassure their cultural masculinity as well develop as an …

Racial Dissimilarity And Employee Attitudes And Behaviors: The Moderating Role Of Competitive Work Environment And Social Support, Sydney Green

LSU Master's Theses

Racial diversity within public and private organizations is a controversial topic: many companies are encouraged to make their team racially representative of the general public while also maintaining productivity. At the same time, research suggests that increasing racial diversity may have a negative influence on desirable work-related outcomes, especially if employees perceive themselves to be racially dissimilar from their coworkers. In attempting to increase racial diversity, organizations may leave some of their employees experiencing negative consequences related to being the only employee of a particular racial minority group (e.g., Black). These types of circumstances and their negative consequences adds to …

A Semiotic Approach To Visual Analysis Of Dress: Symbolic Communication Of Clothing Color, Cut, And Composition Through The French Film Costumes Of Anaïs Romand, Leigh Danielle Honeycutt

LSU Master's Theses

This study examines the communicative role of clothing in film. Using the skillful costume canvas of French designer Anaïs Romand, we explore the possible visual messages and potential cultural and linguistic meanings that clothing choice conveys. This analysis uses Roland Barthes’ Theory of the “Five Codes” from his book S/Z as well as psychological sources about color analysis as its methodological basis. Images from each of the five period piece films were chosen and analyzed using semiotics. The costumes in all five films chosen for analysis were designed under the direction of Anaïs Romand and were all either nominated for, …

Dependability And Reliability Of The Direct Behavior Rating Classroom Management Forms, Kaitlin Angela Cassidy

LSU Doctoral Dissertations

Classroom management skills are evidence-based strategies used to maintain a positive and productive learning environment. Utilizing classroom management strategies has been proven effective; however, limited tools are available for assessing such skills and further assessment of the reliability and dependability of such measures is needed. The Direct Behavior Rating – Classroom Management (DBR-CM) forms are measures for assessing classroom management and come in three forms: external rater (DBR-CM ER), self-report (DBR-CM SR), and student rater (DBR-CM ST). This study extended on the information obtained from the Cassidy (2018) study that examined the DBR-CM ER form. The study evaluated the inter-observer …

Examining Intraindividual Variability As A Predictor Of Cognitive And Functional Decline In Older Adulthood, Alyssa N. De Vito

LSU Doctoral Dissertations

Intraindividual variability (IIV) has recently emerged as a promising early indicator of future cognitive decline (Haynes et al., 2017). However, the literature is currently limited in that the majority of studies have only examined IIV in one cognitive domain: reaction time. Explorations into the relationship between IIV and functional status are also sparse, with only one recent study exploring this relationship (Schmitter-Edgecombe et al., 2020). The present study aimed to address gaps in the literature by examining IIV in differing cognitive domains to determine which measure(s) were the best predictors of cognitive and functional status at baseline as well as …

#Blackgirlmathmagic: A Mixed Methods Study Examining African American Girls In Standardized Mathematicstesting, Rakeema Thomas Toussaint

LSU Doctoral Dissertations

Black women have been making successful strides in mathematics for decades; however, they continue to be underrepresented in mathematics and other STEM fields. According to Young et al. (2017), Black girls and women perform lower in mathematics than all other racial gender groups except for Black males. Considering the stakes for Black girls and women in mathematics, this study sought to address this group's challenges early in their secondary education experiences, focusing on standardized testing.

The purpose of this explanatory-sequential mixed-methods study was to determine how different mathematics item types impacted the performance of African American girls, especially multiple-select multiple-choice …