Life Sciences Commons^™

Using Noninvasive Calibrated Cuff Plethysmography To Observe The Effects Of Cold-Water Immersion On Arterial Compliance, Rita M. Grigorian

Master's Theses

As the prevalence of cardiovascular diseases continues to exponentially grow in populations across the globe, the necessity of determining underlying factors, effective methods of diagnoses, and universally available preventive measures also grows. Early detection of endothelial dysfunction, a proven precursor of cardiovascular diseases, can be extremely impactful in encouraging preventative measures and early intervention before medical conditions become chronic. In recent years, ice plunging, a form of cryotherapy involving full body immersion in cold water, has gained popularity within circles of fitness and health practitioners, gaining the interest of people of all backgrounds. Certain parallels observed between the human physiological …

Knowledge And Use Of Paced Bottle-Feeding Among Mothers Of Young Infants, Alison K. Ventura, Vivian M. Drewelow

Kinesiology and Public Health

Objective: To describe mothers’ awareness and use of paced bottle-feeding (PBF) and to investigate whether the use of PBF was associated with maternal characteristics and infant feeding practices.

Methods: Cross-sectional, online survey. Participants were mothers of infants < 12 months of age (n =197). Participants self-reported their awareness and use of PBF, demographic characteristics, and infant feeding practices.

Results: Of the 41% of participants who indicated they had or maybe had heard of PBF, 23% used PBF and 35% sometimes used PBF. Use of PBF was not associated with mother or infant characteristics. Participants who used PBF were significantly less likely to encourage their infant to finish the bottle (odds ratio,0.04; 95% confidence interval, 0.01−0.79).

Conclusions and Implications: Paced bottle-feeding was …

The Perceptions And Effects Of Nutrition On Worker Health And Productivity In Construction, Matthew Scott Howell

Construction Management

Construction workers often have poor dietary habits due to poor nutrition education, lack of nutritious food options, and social stigma. These habits often lead to health problems like obesity, diabetes, and heart disease which can decrease productivity and put workers at risk of on-site injury. This preliminary study examines how nutrition impacts worker safety and productivity. A survey was distributed to six students involved in construction work for Cal Poly’s Residential Construction course. This survey identified their eating habits and inhibitors for healthy eating. Two meals, one with high nutritional value and one with low nutritional value, were given to …

Maternal Responsiveness And Toddler Body Mass Index Z-Score: Prospective Analysis Of Maternal And Child Mealtime Interactions, C. N. Hart, Suzanne Phelan, D. L. Coffman, E. Jelalian, Alison K. Ventura, E. A. Hodges, N. Hawley, J. O. Fisher, R. R. Wing

Kinesiology and Public Health

Responsive feeding, where parents are guided by children's hunger and satiation cues and provide appropriate structure and support for eating, is believed to promote healthier weight status. However, few studies have assessed prospective associations between observed parental feeding and toddler growth. We characterized toddler growth from 18 to 36 months and, in a subset of families, examined whether observed maternal responsiveness to toddler satiation cues and encouraging prompts to eat at 18 and 24 months were associated with toddler body mass index z-score (BMIz) from 18 to 36 months. Participants included 163 toddlers and their mothers with overweight/obesity who had …

Infant Age Moderates Associations Between Infant Temperament And Maternal Technology Use During Infant Feeding And Care, Maya I. Davis, Camille M. Delfosse, Alison K. Ventura

Kinesiology and Public Health

Previous research illustrated that infants’ temperamental traits shape parents’ behaviors, but parents’ behaviors can also elicit or intensify infants’ behaviors in ways that shape temperament. One understudied aspect of parenting that may exhibit bidirectional influences with temperament is parent technology use (e.g., use of mobile devices) within family contexts. To date, few studies have examined whether maternal technology use is associated with infant temperament and whether age-related differences in these associations exist. The present study was a secondary analysis of pooled data from three infant feeding studies. Mothers (n = 374) of young infants (age 16.2 ± 6.2 weeks) …

Associations Between Parenting Stress, Parent Feeding Practices, And Perceptions Of Child Eating Behaviors During The Covid-19 Pandemic, Lupita Maria González, Amy Lammert, Suzanne Phelan, Alison K. Ventura

Kinesiology and Public Health

The aim of this study was to explore associations between parenting stress, feeding practices, and perceptions of children's eating behaviors during the COVID-19 pandemic. Parents (n = 284) of children ages 4–6 years completed a cross-sectional online survey during the onset of pandemic-related stay-at-home mandates in the U.S. Parents reported current levels of parenting stress, feeding practices, and child eating behaviors. Parents also reported whether parenting stress had increased, stayed the same, or decreased since prior to the onset of pandemic-related stay-at-home mandates. Greater levels of parenting stress were associated with less desirable feeding practices, including greater odds of …

Strategies To Promote Responsive Bottle-Feeding In Wic Predict Less Frequent Use Of Food To Soothe And Healthier Weight Status For Infants With Negative Temperaments, Alison K. Ventura, Shannon E. Whaley

Kinesiology and Public Health

Background: Infants with greater temperamental negative affectivity are at higher risk for overfeeding and excess weight gain.

Objective: To examine whether strategies to promote responsive bottle-feeding within WIC promoted healthier maternal feeding practices and infant weight status among infants with greater negative affectivity.

Methods: Secondary analysis of data from a matched-pair cluster randomized trial. Policy, systems and environmental change (PSE) strategies to promote responsive bottle-feeding were implemented at three WIC clinics; these clinics were compared with three matched control clinics. Linear mixed models tested whether infant negative affectivity interacted with PSE strategies to predict feeding and weight outcomes when infants …

Associations Between Mothers’ Use Of Food To Soothe, Feeding Mode, And Infant Weight During Early Infancy, Megan K. Hupp, Peggy C. Papathakis, Suzanne Phelan, Alison K. Ventura

Kinesiology and Public Health

Weight status and rate of weight gain in the first six months postpartum are strong predictors of later obesity; thus, infant feeding practices are an important target for obesity prevention efforts. The use of food to soothe (FTS) is associated with less-favorable eating habits and weight outcomes for older infants and children. However, few studies have examined correlates of use of FTS during early infancy. The primary aim of this cross-sectional study was to explore associations between use of FTS and infant weight status in the first 6 months postpartum. A secondary aim was to identify the combination of maternal …

Wic Participants' Perceptions Of Covid-19-Related Changes To Wic Recertification And Service Delivery, Alison K. Ventura, Catherine E. Martinez, Shannon E. Whaley

Kinesiology and Public Health

Many Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) clinics implemented alternatives to in-person service delivery in response to the COVID-19 pandemic, including virtual visits and electronic document sharing. The objective of this cross-sectional study was to describe WIC participants’ experiences with remote service delivery and recertification during the pandemic. Participants included mothers and infants who participated in a WIC-based intervention between June 2019-August 2020. All participants (N = 246) were invited to complete a follow-up survey between November 2020-February 2021; 185 mothers completed the survey. The survey assessed sociodemographics, employment, food security, experiences with remote WIC recertification …

Maternal Diet During Pregnancy And Lactation And Child Food Preferences, Dietary Patterns, And Weight Outcomes: A Review Of Recent Research, Alison K. Ventura, Suzanne Phelan, Karina Silva Garcia

Kinesiology and Public Health

Purpose of Review Efforts to promote children’s preferences for healthy foods hold much potential for improving diet quality and preventing obesity. The purpose of this review was to summarize recent evidence for associations between maternal diet during pregnancy and lactation and child food preferences, dietary patterns, and weight outcomes.

Recent Findings Recent research illustrates greater maternal vegetable intakes during pregnancy and lactation predict greater child preferences for and intakes of vegetables. Recent randomized clinical trials to improve maternal weight outcomes during the perinatal period via behavioral lifestyle interventions that included dietary components have yielded mixed findings for effects on child …

Mother–Infant Interactions And Infant Intake During Breastfeeding Versus Bottle-Feeding Expressed Breast Milk, Alison K. Ventura, Megan Hupp, Joseph Lavond

Kinesiology and Public Health

Bottle-fed infants are at higher risk for rapid weight gain compared with breastfed infants. Few studies have attempted to disentangle effects of feeding mode, milk composition and relevant covariates on feeding interactions and outcomes. The objective of the present study was to compare effects of breastfeeding directly at the breast versus bottle-feeding expressed breast milk on feeding interactions. Mothers with <6-month-old infants (n = 47) participated in two counterbalanced, feeding observations. Mothers breastfed their infants directly from the breast during one visit (breast condition) and bottle-fed their infants expressed breast milk during the other (bottle condition). Masked raters later coded videos using the Nursing Child Assessment Parent–Child Interaction Feeding Scale. Infant intake was assessed. Mothers self-reported sociodemographic characteristics, infant feeding patterns (i.e. percentage of daily feedings from bottles) and level of pressuring feeding style. Mother and infant behaviours were similar during breast and bottle conditions. Percent bottle-feeding moderated effects of condition on intake (P = 0.032): greater percent bottle-feeding predicted greater intake during the bottle compared with breast condition. Effects of feeding mode were not moderated by parity or pressuring feeding style, but, regardless of condition, multiparous mothers fed their infants more than primiparous mothers (P = 0.028), and pressuring feeding style was positively associated with infant intake (P = 0.045). Findings from the present study do not support the hypothesis that feeding mode directly impacts dyadic interaction for predominantly breastfeeding mothers and infants, but rather suggest between-subject differences in feeding experiences and styles predict feeding outcomes for this population.

Associations Between Maternal Technology Use, Perceptions Of Infant Temperament, And Indicators Of Mother-To-Infant Attachment Quality, Shawnee Alvarez Guitierrez, Alison K. Ventura

Kinesiology and Public Health

Background: Previous research suggests parents' use of technological devices, such as TV and mobile devices, within family contexts may decrease the quality of parent-child interactions. During early infancy, mothers report engaging with technological devices during infant feeding and care interactions, however, few studies have explored potential associations between maternal technology use and the quality of mother-to-infant attachment.

Aim: To examine associations between maternal technology use during mother-infant interactions and indicators of mother-to-infant attachment during early infancy.

Study design: Cross-sectional survey.

Methods: Mothers (n = 332) of infants aged 2 to 6 months were recruited via MTurk, a crowdsourcing platform, …

Effect Of Prenatal Lifestyle Intervention On Maternal Postpartum Weight Retention And Child Body Massindex Z-Score At 36 Months, Suzanne Phelan, Chantelle N. Hart, Elissa Jelalian, Karen Muñoz-Christian, Noemi Alarcon, Angelica Mchugh, Alison K. Ventura, Rena R. Wing

Kinesiology and Public Health

Background/Objectives We previously reported results from a randomized trial showing that a behavioral intervention during pregnancy reduced excess gestational weight gain but did not impact maternal weight at 12 months. We now examine the longer-term effects of this prenatal intervention on maternal postpartum weight retention and toddler body-mass-index z scores (BMIz) over 36 months.

Subjects/Methods Pregnant women (N = 264; 13.7 weeks’ gestation; 41.6% Hispanic) with overweight or obesity were randomized into usual care or prenatal intervention. Anthropometric assessments in mothers and toddlers occurred at baseline, 35 weeks’ gestation and after delivery at 6, 12, 18, 24, and 36 …

Suspicion Encoded: Women Of Color And Biometric Technology In The United States, Lilith A. Saylor

sprinkle: an undergraduate journal of feminist and queer studies

This paper explores the commodification of privacy through biometric technology in the United States. It examines the impact of this technology on poor women of color (WOC), arguing that poor WOC face intersectional discrimination based on the convergence of sex, race, and class in their identities. I highlight the unique and powerful intrusion of biometric technology into the lives of poor WOC, and argue that the connection between data and the physical body created through biometric data has formed an environment in which the state wields unrestricted control in all spheres over the privacy of poor WOC.

Eelgrass (Zostera Marina) Population Decline In Morro Bay, Ca: A Meta-Analysis Of Herbicide Application In San Luis Obispo County And Morro Bay Watershed, Tyler King Sinnott

Master's Theses

The endemic eelgrass (Zostera marina) community of Morro Bay Estuary, located on the central coast of California, has experienced an estimated decline of 95% in occupied area (reduction of 344 acres to 20 acres) from 2008 to 2017 for reasons that are not yet definitively clear. One possible driver of degradation that has yet to be investigated is the role of herbicides from agricultural fields in the watershed that feeds into the estuary. Thus, the primary research goal of this project was to better understand temporal and spatial trends of herbicide use within the context of San Luis …

Potential Overfeeding Among Formula Fed Special Supplemental Nutrition Program For Women, Infants And Children Participants And Associated Factors, Christopher E. Anderson, Catherine E. Martinez, Alison K. Ventura, Shannon E. Whaley

Kinesiology and Public Health

Background: The Special Supplemental Nutrition Program for Women, Infants and Children (WIC) provides enough formula to meet the known nutritional needs of infants up to 6 months of age whose mothers report not breastfeeding, but many mothers report WIC providing insufficient formula, indicating potential overfeeding.

Objective: To estimate the prevalence of potential overfeeding among formula-feeding WIC participants and identify associated factors.

Methods: Potential overfeeding was identified among participants of the longitudinal Infant and Toddler Feeding Practices Study-2 (ITFPS-2) receiving the fully formula feeding WIC infant package at 1 month of age (n = 1235, weighted n = 197 079). Associations …

Study Of Plants Used Against Infections By California Native American Tribes, Maria J. Rojas

Master's Theses

The objectives of this research were to evaluate the antibacterial activity and to determine the chemical composition of a list of medicinal plants used by Native Americans in California. Artemisia californica, Mimulus aurantiacus, Equisetum telmateia, Equisetum hyemale, and Marah fabacea were selected from a list of plants reported as having been used for ailments related to infections by tribes located in California. The extracts obtained through steam distillation from E. telmateia, E. hyemale and M. fabacea were assayed for in vitro antibacterial activity against 16 Gram-negative and 6 Gram-positive bacteria using disk diffusion assays and measuring the diameters of inhibition …

Positive Parenting Approaches And Their Association With Child Eating And Weight: A Narrative Review From Infancy To Adolescence, Katherine N. Balantekin, Stephanie Anzman-Frasca, Lori A. Francis, Alison K. Ventura, Jennifer O. Fisher, Susan L. Johnson

Kinesiology and Public Health

Parents play a critical role in the development of children's eating behaviours and weight status, serving as providers, models and regulators of the food environment. Many research reviews have focused on the robust body of evidence on coercive control in feeding: how parenting practices such as restriction and pressure to eat increase children's risk for developing undesirable eating behaviours and unhealthy weight outcomes. Fewer reviews adopt a strengths-based perspective focusing on the ways that parents can actively support the development of healthy eating behaviours and weight trajectories. Emerging research on such positive parenting styles and practices offers solutions beyond the …

Associations Between Variations In Breast Anatomy And Early Breastfeeding Challenges, Alison K. Ventura, Brittany Lore, Olga Mireles

Kinesiology and Public Health

Background: Mothers with anatomic variability (e.g., shorter, wider nipples; denser areolas) may experience breastfeeding challenges disproportionately.

Research aim: To examine whether variations in breast anatomy are associated with risk for early breastfeeding challenges.

Methods: Participants included mothers < 6 weeks postpartum. Nipple base width, nipple length, and areolar density were measured on the right and left breast separately. Experiences with early breastfeeding challenges were determined through a combination of maternal report and clinical assessment.

Results: Participants (N = 119) had an average nipple diameter of 23.4 (SD = 3.0) mm for left nipples and 23.5 (SD = 3.0) mm for right nipples (range = 10–34 mm). Average nipple length was 8.5 (SD = 3.2) mm for left breasts and 9.1 (SD = 3.2) mm for right breasts (range = 5–20 mm); 35% of participants had dense areolas …

Biography Of Leann L Birch, Phd, 25 June 1946 – 26 May 2019, Stephani Anzman-Frasca, Kirsten K. Davison, Jennifer O. Fisher, Lori A. Francis, Susan L. Johnson, Justin A. Lavner, Ian M. Paul, Alison K. Ventura, Jennifer S. Savage

Kinesiology and Public Health

On 26 May, 2019, the nutrition community lost a visionary ambassador, trusted advisor, and cherished mentor. Leann Birch was a pioneer in bringing a developmental psychology perspective to the study of children's nutrition as a means to respond to real-world questions raised by parents. Leann Elsie Traub was born in Owosso, Michigan 25 June, 1946. She grew up primarily in Southern California and received a bachelor's degree in psychology from California State University, Long Beach, in 1971. She completed her graduate studies at the University of Michigan where she received a master's degree in 1973 and a doctorate in 1975, …

Towards Equitable Communication: An Exploratory Study To Guide Knowledge Translation In Kinesiology, Akuekegbe Y. Uwadiale, Jafra D. Thomas

Kinesiology and Public Health

Resources at or below the 8th grade reading level is key if behavioral resources are to support end-user health literacy, a strong predictor of prevention-oriented health behaviors and health risk. To understand how readability issues effect physical activity resources, we performed a systematic review of the kinesiology literature. A sample of 18 original studies was obtained (M publication date=2010, SD=7.45), which on average reported public resources exceeded the 8th grade reading level by at least two grades. Thematic analysis resulted in 14 general ways material readability could be easily improved. Project findings will be discussed and next steps presented.

Hericium Erinaceus: Erinacine A, Ventura Villanueva

Agricultural Education and Communication

Hericium erinaceus (Lion's Mane)

Erinacines - component found in Lion's Mane

A variety of mushroom that has been grabbing the attention of different pharmaceutical companies is the Hericium Erinaceus commonly known as Lion’s Mane. Lion’s Mane also known as, “Sheep’s head, Bear’s head, Bearded tooth carpophore, and Yamabushitmnnake” (Lion’s Mane (Hericium erinaceus)). Lion’s Mane in nature is found growing off the dry bark of trees (Kuo, 2016). Nowadays there are many products in the market that sell Lion’s Mane mushroom powder as a superfood. Lion’s Mane mushroom is known to have the component erinacines. Erinacines as of …

Development And Validation Of The Maternal Distraction Questionnaire, Alison K. Ventura, Megan Hupp, Shawnee Alvarez Gutierrez, Rebeca Almeida

Kinesiology and Public Health

This paper describes the development of a self-report measure of mothers’ engagement in technological activities during mother-infant interactions. In Study 1, mothers (n = 332; infants: 3.8 ± 1.4 months) completed the Maternal Distraction Questionnaire (MDQ) and related questionnaires. Factor analysis revealed two distinct subscales representing engagement with technological distractors and perceived distraction. Subscales correlated with relevant measures of feeding styles, attachment, and infant eating behaviors and temperament. In Study 2, mothers (n = 24; infants: 3.8 ± 1.8 months) completed the MDQ and kept feeding activity diaries. Significant correlations between MDQ subscales and diary data were noted. …

A Qualitative Study Of Breastfeeding And Formula-Feeding Mothers’ Perceptions Of And Experiences In Wic, Rebeca Almeida, Shawnee Alvarez Gutierrez, Shannon E. Whaley, Alison K. Ventura

Kinesiology and Public Health

Objective: To explore Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) participants’ perspectives about why formula-fed infants are less likely to be recertified at 1 year compared with breastfed infants.

Design: Four focus groups of WIC mothers, stratified by language spoken (English or Spanish) and feeding mode (breastfeeding [BF] or formula-feeding [FF]).

Setting: Two WIC sites within Los Angeles County, CA.

Participants: Mothers of 6- to 12-month-old infants (n = 31) in the WIC program.

Phenomenon of Interest: Mothers’ perceptions of (1) how WIC supports BF and FF mothers; and (2) experiences of FF mothers in WIC, with …

Maternal Digital Media Use During Infant Feeding And The Quality Of Feeding Interactions, Alison K. Ventura, Jordyn Levy, Sierra Sheeper

Kinesiology and Public Health

Experimental research with parents of older children suggests parents’ engagement with technological devices (e.g., television, mobile devices) in the presence of their children decreases the quality of parent-child interactions. Many mothers report frequent use of technological devices during infant feeding but, to date, few studies have explored the potential association between maternal technological device use during feeding and the quality of infant feeding interactions. To this end, mothers (n = 25) and their infants (mean age = 19.3 ± 6.4 weeks) participated in a within-subject, experimental study to explore associations between maternal digital media use and feeding interaction quality …

Biological Pathway Involvement In Melanoma Heterogeneity And Drug-Induced Resistance, Sarah V. Pack

STAR Program Research Presentations

Tumors develop resistance to numerous drug therapies, and this remains a major obstacle in treating many types of non-surgical cancers. Melanoma provides a good model system for studying drug resistance in cancer due to its high propensity to incur resistance after a significant initial response to a drug. Genes that are highly expressed in melanoma cancer cells have been studied, but in order to further understand the collective function of these highly expressed genes we must analyze gene sets, or pathways. A single gene’s function is rarely independent of other genes, and pathway analysis takes this into account.

Our objective …

Maternal Diet During Lactation And Breast-Feeding Practices Have Synergistic Association With Child Diet At 6 Years, Jacob P. Beckerman, Emily Slade, Alison K. Ventura

Kinesiology and Public Health

Objective: Children breast-fed during infancy consume more fruits and vegetables than formula-fed children. This pattern is likely due, in part, to infant learning from flavours of the mother’s diet transmitted through breast milk, but more research is needed to understand associations between early flavour exposures and later dietary patterns. We examined whether breast-feeding and maternal fruit and vegetable consumption during nursing were synergistically associated with higher child fruit and vegetable consumption.

Design: Prospective cohort study of breast-feeding duration, maternal diet postpartum and child diet. Complete breast-feeding and maternal diet data were available for 1396 mother–child dyads; multiple imputation was used …

Development Of A Prolyl Endopeptidase Expression System In Lactobacillus Reuteri To Reduce The Clinical Manifestation Of Celiac Disease, Kara Lynn Jew

Master's Theses

Celiac Disease (CD) is an autoimmune disorder that emerges due to the ingestion of gluten, a protein found in a variety of common grains such as wheat, rye, and barley. Approximately 1 in 100 individuals in the US suffer from CD, making it the most commonly diagnosed gastrointestinal disorder (Ciclitira et. al., 2005). These proline-rich gluten peptides are resistant to proteolysis and accumulate in the duodenum of the small intestine. Once in the duodenum, these peptides illicit an autoimmune response resulting in villous atrophy. Current treatment for CD requires a rigorous adherence to a gluten-free diet. Nevertheless, gluten-containing grains are …

Development Of A Pediatric Model Of Nafld In Neonatal Iberian Pigs, Gabriella Veronica Hernandez, Victoria Alice Smith, Morgan Coffin, Daniel Columbus, Matthew Burd, Kimberly Sprayberry, Mark Edwards, Daniel Peterson, Darin Bennett, Robert Fanter, Christopher Kitts, Michael La Frano, Margaret Rice, Douglas Burrin, Magdalena Maj, Rodrigo Manjarin

Master's Theses

The prevalence of non-alcoholic fatty liver disease (NAFLD) in children has increased over the past decades, creating a need for animal models that recapitulate the features of the pediatric disease. Iberian pigs have a leptin-resistant phenotype characterized by hyperleptinemia, hyperphagia, and extreme adipogenesis. We hypothesized that neonatal Iberian pigs fed a high fat high-fructose (HFF) diet will develop a pattern of liver injury resembling pediatric NAFLD. In addition, we sought to determine if a mixture of probiotics would prevent the disease. Animals were fed 1 of 4 diets containing (g/kg body weight × d) 0 g fructose, 11 g fat …

Predictors Of Resilience Among Infants At Risk For Rapid Weight Gain, Alison K. Ventura, Kristen Thompson

Kinesiology and Public Health

Objective: The study objective was to investigate factors associated with resilience to rapid weight gain (RWG) among predominantly bottle-fed infants.

Methods: Data came from 1,353 mothers who participated in the Infant Feeding Practices Study 2. Mothers completed a prenatal questionnaire and monthly surveys of infant feeding and growth between birth and 12 months. Infants were classified as resilient if they were predominantly bottle fed but did not exhibit RWG between birth and the latter half of infancy (≥ +0.67 change in weight-for-age z score).

Results: Thirty-five percent of the sample (n = 467) was predominantly bottle fed but did …