Public Health Commons^™

Exploring The Associations Between Sexism, Physical Behaviors, And Psychosocial Correlates Of Physical Activity In Young Women, Melanna Cox

Doctoral Dissertations

Physical behaviors (PB), defined as physical activity (PA) and sedentary behavior (SB), tend to be less favorable in women than in men. Low self-efficacy (SE) and social support (SS), and gender norms hinder women’s PB. Benevolent sexism, a theory on gender norms, could explain the gender disparity. PURPOSE: To 1) assess the associations among benevolent sexism endorsement (BSEN), experiences with benevolent sexism (EBS), PB, SE, and SS, 2) evaluate if BSEN or SE mediate the relationship between EBS and PB, and 3) develop a questionnaire that measures a woman’s sexist experiences in PA. METHODS: Study 1: Women (N=186) completed a …

Sexual Orientation Differences In The Association Between Physical Activity And Allostatic Load: Results From The National Health And Nutrition Examination Study, Natalia I. Putnam

Masters Theses

Higher levels of allostatic load (AL), a composite measure of the impact of chronic stress on the body, are found among socially marginalized groups compared to privileged groups. AL is associated with premature aging and death, as well as a variety of chronic health conditions that impact quality of life. Effects of AL may be offset by physical activity (PA). Queer populations (including those who identify as lesbian, gay, or bisexual) may be at risk for elevated AL due to repeated exposure to discrimination in the form of sexual minority stress. There is mixed literature on sexual orientation differences in …

The Impact Of A Lifestyle Intervention On Risk Factors Of Cardiovascular Disease And Type Ii Diabetes Among At-Risk Hispanic Women, Kathryn A. Wagner

Doctoral Dissertations

Cardiovascular disease and type 2 diabetes are global epidemics affecting approximately 127 and 21 million people in the U.S., respectively. Women who are overweight, obese or who develop glucose intolerance during pregnancy represent high-risk groups for the development of cardiovascular disease and type 2 diabetes. Hispanic women are both more likely to begin their pregnancies as overweight or obese and have a higher prevalence of type 2 diabetes, compared to non-Hispanic whites. However, prior lifestyle interventions have largely been limited to non-Hispanic whites. Therefore, this research assessed how culturally tailored lifestyle modification may affect cardiovascular disease and type 2 diabetes …

Accelerometer-Determined Physical Behavior Metrics And Their Associations With Sarcopenia Among Oldest-Old Adults, Eric M. Eberl

Masters Theses

INTRODUCTION: Sarcopenia is a loss of muscle function and muscle mass which frequently occurs among the oldest-old adult population (aged 85+ years). The analysis of accelerometer-determined physical behavior volumes and patterns of oldest-old adults might provide novel insights into the associations with sarcopenia and its components. METHODS: A total of 145 participants in the primary sample and 87 participants in the subsample with a mean age of 88.2 (2.5) years from the Health, Aging, and Body Composition study cohort provided cross-sectional data of handgrip strength, appendicular lean mass, gait speed, and accelerometry. Probable, confirmed, and severe sarcopenia were assessed based …

Development And Cross-Validation Of A Cadence-Based Metabolic Equation For Walking, Christopher C. Moore

Masters Theses

The ACSM Metabolic Equation is a widely recognized equation for predicting metabolic intensity from walking speed. However, an equation that uses an observable metric (i.e., cadence [steps/min]), accounts for individual characteristics, and is validated across walking conditions may enable more accessible and accurate predictions of walking intensity. PURPOSE: To develop metabolic equations that predict metabolic intensity (oxygen consumption; mL/kg/min) from cadence using a large treadmill walking dataset (Study One) and cross-validate these equations during overground unconstrained and cadence-constrained walking conditions (Study Two). METHODS: In Study One, 193 adults (21-81 years) completed treadmill walking bouts while oxygen consumption was measured with …

The Development And Testing Of A Direct Observation Protocol As A Criterion Measure For Children’S Simulated Free-Play Activity, Melanna Cox

Masters Theses

INTRODUCTION: Direct observation (DO) systems have been used for decades to assess free-living PA in children. These traditional DO systems identify the highest intensity observed during alternating observe-and-record periods. Using video-taped DO would allow researchers to code activities and contextual information each time the participant changes their behavior. PURPOSE: To develop and test a novel video-based DO system for children’s free-play activity. METHODS: Following iterative DO system development (The Observer XT, Noldus), 28 children (age=8.4 ± 1.5 years) participated in a 30-minute simulated free-play session that was recorded with a GoPro camera. Participants wore a portable indirect calorimetry (IC) device …

A Prospective Study Of Physical Activity And Fecundability, Lindsey M. Russo

Masters Theses

Background:

Physical activity (PA) may influence fecundability through alterations in endocrine function. The limited studies that have evaluated PA and fecundability in non-clinical populations have utilized internet-based recruitment, contain potential issues in measurement, and have yielded inconclusive results.

Methods:

We evaluated the association between PA and time-to-pregnancy in the Effects of Aspirin in Gestation and Reproduction trial, which included 1228 women attempting pregnancy ages 18–40 with prior pregnancy loss. PA was measured at baseline using the short form of the International Physical Activity Questionnaire to determine hours/week of activity (vigorous, moderate, and walking) and hours/day of sedentary (sitting) behavior. Pregnancy …

Feasibility Of A Combined Physical Activity And Sleep Education Intervention For Girls Living In A Low Socioeconomic Status Urban Community, Cory J. Greever

Doctoral Dissertations

Declining sleep duration and poor sleep quality is a public health epidemic disproportionately effecting elementary age girls living in low socioeconomic status urban communities. The Girls Dancing and Sleeping for Health (Girls DASH) program was designed to test the feasibility, acceptability, and efficacy of a combined physical activity and sleep education program in this population. In combination with baseline data from a previously conducted intervention in elementary age urban girls living in a low SES community in Springfield, MA, results from a cross-sectional analysis indicated that greater screen time was positively associated with parental reports of child’s sleep quality. Additionally, …

Impact Of A Preschool Workplace Intervention On Classroom Teachers’ Physical Activity Levels And Quality Of Life, Ogechi O. Nwaokelemeh

Doctoral Dissertations

PURPOSE: To examine the feasibility and efficacy of a three-month, cluster-randomized workplace PA intervention on PA levels and wellbeing measures in preschool classroom teachers. METHODS: Ten preschool centers were randomized into two groups; short-bouts of structured PA (SBS-PA, n=5) or traditional unstructured PA (TRAD-PA, n=5). The SBS-PA intervention consisted of 10-minute structured, teacher-led PA routines implemented within the classroom setting, followed by 20 minutes of unstructured playtime. The TRAD-PA intervention consisted of supervised 30-minute of unstructured free playtime. Both interventions were implemented during the morning and afternoon designated gross-motor playtime for 30 min/session, five days/week for three months. Participants’ …

Does Change In Physical Activity Predict Mental Health Outcomes In Pre-Adolescent African American Girls?, Sarah A. Burkart

Masters Theses

Pediatric obesity is a significant clinical and public health issue for African American girls in which low physical activity (PA) is a contributor. The mother-daughter relationship (MDR) has rarely been examined in the context of improving health behaviors such as PA and mental health outcomes (MHO) within this population. PURPOSE: To examine if change in PA following a 12-week culturally-tailored mother-daughter PA intervention predicts change in MHO variables (self-esteem, depressive symptoms, body image dissatisfaction) and MDR in pre-adolescent African American girls. METHODS: Mothers (n=27; age=36.0±17.0 years; body mass index (BMI)=34.0±7.4 kg/m²) and daughters (n=27; age=9.0±1.4 years; BMI=20.3±5.7 kg/m …

Stress And Depression During Pregnancy Among Hispanic Women: Risk For Adverse Birth Outcomes And The Role Of Physical Activity, Kathleen Szegda

Doctoral Dissertations

Preterm birth and low birth weight are among the leading causes of infant mortality and morbidity in the United States. Puerto Rican women are at increased risk for these adverse birth outcomes and elevated levels of depression and psychosocial stress during pregnancy when compared to non-Hispanic Whites. Therefore, it is important to understand whether these psychological factors increase risk for these adverse birth outcomes and mechanisms to prevent/reduce depression in this high-risk population. The first study of this dissertation examined associations between perceived stress during pregnancy and preterm birth, low birth weight, and birth of a small-for-gestational age infant (SGA) …

The Role Of Sleep Timing On Diet Quality And Physical Activity Among College-Aged Women Participating In The University Of Massachusetts Vitamin D Status Study, Deniz Azarmanesh

Masters Theses

Overweight and obesity are risk factors for various chronic diseases. Sleep has been associated with overweight and obesity. One potential mechanism by which sleep may lead to overweight and obesity is through positive energy balance (i.e. energy intake exceeding expenditure). There are few studies examining the impact of sleep timing (onset and wake time) on diet and exercise. In a cross sectional study, we examined associations between sleep timing and diet quality, and in separate models, between sleep timing and meeting the 2008 Physical Activity Guidelines for Americans among the participants of the UMass Vitamin D Status Study. A total …

Evaluating The Mebactive-Youth As A Measure Of Mental Toughness, Manneh Ghazarians

Masters Theses 1911 - February 2014

The obesity epidemic in youth is increasing, due to the decreasing levels of physical activity within the youth population. One variable that has never been examined as a correlate of physical activity is mental toughness. Mental toughness is a psychological trait characterized by determination, resiliency, and perform optimally regardless of the circumstances. In order to evaluate this trait the MeBActive-Youth was developed. The purpose of this study was to first, evaluate the psychometric properties of the newly developed measure and secondly, to assess the relationship of mental toughness, social support and self-efficacy to physical activity. Participants (N = 106) completed …

Calibrating A Novel Multi-Sensor Physical Activity Measurement System, D. John, S. Liu, J. Saski, C. Howe, J. Staudenmayer, R. Gao, Patty Freedson

Patty S. Freedson

Advancing the field of physical activity (PA) monitoring requires the development of innovative multi-sensor measurement systems that are feasible in the free-living environment. The use of novel analytical techniques to combine and process these multiple sensor signals is equally important. This paper, describes a novel multi-sensor ‘Integrated PA Measurement System’ (IMS), the lab-based methodology used to calibrate the IMS, techniques used to predict multiple variables from the sensor signals, and proposes design changes to improve the feasibility of deploying the IMS in the free-living environment. The IMS consists of hip and wrist acceleration sensors, two piezoelectric respiration sensors on the …

Recreational Physical Activity And Premenstrual Syndrome In College-Aged Women, Aimee R. Kroll

Masters Theses 1911 - February 2014

It is estimated that up to 85% of premenopausal women experience at least one premenstrual symptom and 15-20% meet clinical criteria for premenstrual syndrome (PMS). PMS has a high morbidity level and reduces the quality of life for many women of reproductive age, with pharmaceutical treatments having limited efficacy and substantial side effects. Physical activity has been recommended as a method of reducing menstrual symptom severity. However, little evidence exists to support a clear relationship between physical activity and PMS. Using a cross-sectional design, we evaluated the relationship between physical activity and PMS and menstrual symptoms among 186 women aged …

Physical Activity And Maternal/Fetal Outcomes In A Pregnant Latina Population, Audra L Gollenberg

Doctoral Dissertations 1896 - February 2014

Physical activity guidelines encouraging activity among healthy pregnant women have been issued by the Centers for Disease Control and Prevention, yet Latina women remain more sedentary than non-Latina white women. Latina women are also at higher risk for gestational diabetes mellitus and, among Latina women, Puerto Rican women have the highest rates of low birth weight and preterm-related infant death. This dissertation utilized data from the Latina GDM study, a prospective cohort study of 1,231 Latina women recruited early in pregnancy and followed through delivery. Participants were interviewed in early and mid pregnancy for assessment of sociodemographics, acculturation, medical, and …

Do Metabolic And Psychosocial Responses To Exercise Explain Ethnic/Racial Disparities In Insulin Resistance?, Rebecca E Hasson

Doctoral Dissertations 1896 - February 2014

Introduction . Non-Hispanic blacks (blacks) are more insulin resistant compared to non-Hispanic whites (whites), increasing their risk for Type 2 diabetes. The role played by ethnic/racial disparities in the response to physical activity in mediating those higher rates of insulin resistance in blacks is unknown. Because the beneficial effects of exercise are transient and require subsequent doses of exercise to maintain the effect; the metabolic and psychosocial responses to single exercise bouts have strong implications for both opposing insulin resistance and raising the probability that an individual will continue to exercise. Purpose . To compare the metabolic and psychosocial responses …