Matching Items (36)
Description
Research provides increasing support of self-worth, non-physical motives, and body image for predicting physical activity in women. However, no empirical tests of these associations have been conducted. Ecological momentary assessment (EMA) has been recognized as useful for understanding correlates of physical activity. This study tested the feasibility of a novel EMA protocol and explored temporal relationships between daily self-worth and physical activity in middle-aged women. Women aged 35-64 years (N=63; M age=49.2±8.2 years) received text message prompts to an Internet-based mobile survey three times daily for 28 days. The survey assessed momentary activity, self-worth (knowledge, emotional, social, physical, general), and self-efficacy. Women concurrently wore an accelerometer on their non-dominant wrist. Feasibility was assessed via accelerometer wear-time estimates, survey completion rates, and participant feedback. Multilevel models examined the predictive influence of self-worth on daily activity counts. Self-efficacy was also tested due to known relationships with self-worth and physical activity in women. Wear time was high (952.92 ± 100.99 min per day), with only 141 observations lost to non-wear. However, 449 were lost to accelerometer malfunction. Women completed 80.8% of surveys. After excluding missing physical activity data, 67.5% of observations (N=3573) were analyzed. Although women thought the survey was easy to complete, perceptions of the accelerometer were mixed. Approximately 34% of the variance in daily counts was within individuals (ICC=0.66). Average self-efficacy (β=0.005, p=0.009), daily fluctuations in self-efficacy (β=0.001, p<0.001), and daily fluctuations in general self-worth (β=0.04, p=0.003) predicted daily activity. There were significant individual differences in relationships between daily fluctuations in emotional (β=0.006, p=0.02) and general self-worth (β=0.005, p=0.02) and daily activity. The use of text message prompts and an Internet-based mobile survey was feasible for conducting EMA in middle-aged women. Research identifying optimal methods of behavior monitoring in longitudinal studies is needed. Results provide support for small but significant associations among daily fluctuations in self-efficacy and general self-worth and daily activity in middle-aged women. The impact of emotional self-worth may differ across women. Further research examining the transient natures of self-efficacy and general self-worth, improving self-worth scales, and testing momentary strategies to increase women's self-worth and physical activity is warranted.
ContributorsEhlers, Diane K. (Author) / Huberty, Jennifer L (Thesis advisor) / Todd, Michael (Committee member) / Vreede, Gert-Jan de (Committee member) / Hooker, Steven (Committee member) / Buman, Matthew (Committee member) / Arizona State University (Publisher)
Created2014
Description
Cardiovascular disease and diabetes are major health burdens. Diabetes is a primary risk factor of cardiovascular disease, and there is a strong link between obesity and risk of developing diabetes. With the prevalence of prediabetes highest among overweight/obese individuals, investigation into preventative strategies are needed. Aerobic exercise is a potent stimulus for both insulin and non-insulin dependent glucose uptake into the skeletal muscle. A single exercise session can improve insulin sensitivity within hours after exercise. The effects of intensity, type, and volume of exercise on glucose homeostasis have been studied extensively; however, controlling for muscle contraction frequency with a constant exercise intensity and workload has not been examined. The purpose of this study was to compare muscle contraction frequency during aerobic exercise by altering cycling cadence on insulin sensitivity and vascular health. Eleven obese males (age=28yr, BMI=35kg/m2) completed three conditions in random order: 1) control-no exercise; 2) 45-min cycling at 45 revolutions per minute (45RPM) at 65-75%VO2max; 3) 45-min cycling at 90RPM at 65-75%VO2max. Glucose control and insulin sensitivity were assessed with oral glucose tolerance tests (OGTT) 4 hours post-exercise. Vascular health was assessed via flow-mediated dilation (FMD) pre-exercise, 1-hr and 2-hr post exercise and ambulatory blood pressure was assessed pre-exercise, and continually every 15 min post-exercise. Linear mixed models were used to compare the mean differences in outcome variables. There were no significant differences found between control and both exercise conditions for all OGTT outcomes and no differences were found between control and exercise in FMD (all, p>0.05). Significant effects for exercise were found for both brachial and central blood pressure measures. Brachial systolic blood pressures were lower at 2- and 4-hr post-exercise by approximately -10 and -8mmHg, respectively (p<0.001 and p=0.004) versus control. Central systolic blood pressures were lower at 2-, 3-, and 4-hr post-exercise by approximately -8, -9 and -6mmHg, respectively (p<0.001, p=0.021 and p=0.004) versus control. In conclusion, aerobic exercise, regardless of muscle contraction frequency, were unable to effect glucose control and insulin sensitivity. Similarly, there was no effect on vascular function. However, there was a significant effect of aerobic exercise on reducing post-exercise blood pressure.
ContributorsJarrett, Catherine Lee (Author) / Gaesser, Glenn A (Thesis advisor) / Angadi, Siddhartha S (Committee member) / Dickinson, Jared M (Committee member) / Whisner, Corrie M (Committee member) / Todd, Michael W (Committee member) / Arizona State University (Publisher)
Created2017
Description
This body of research sought to explore relationships between parenting practices, physical activity resources, and Hispanic children’s physical activity. Guided by the Family Ecological Model (FEM) and the Ecological Model of Physical Activity (EMPA) this study examined the influence of parents on children’s physical activity through an integrative review. A cross sectional study was conducted to investigate potential relationships between parental perception safety at school, gender, and children’s physical activity. A cross sectional study was also utilized to examine potential correlations between parenting practices, physical activity resources, and children’s physical activity. Parental role modeling of physical activity and parental support for physical activity emerged as parenting practices that have considerable potential to impact children’s physical activity. Gender differences among children’s physical activity were also a key finding of this study with boys participating in more physical activity than boys. While quality of physical activity resources did not have significant associations with parenting practices or children’s physical activity, more research is needed to determine how resources for physical activity may impact parenting practices, and children’s physical activity.
ContributorsHutchens, Amy (Author) / Lee, Rebecca E (Thesis advisor) / Todd, Michael (Committee member) / Lyles, Ann Marie (Committee member) / Holtzclaw, Barbara (Committee member) / Arizona State University (Publisher)
Created2017
Description
No studies have evaluated the impact of tracking resting energy expenditure (REE) and modifiable health behaviors on gestational weight gain (GWG). In this controlled trial, pregnant women aged >18 years (X=29.8±4.9 years) with a gestational age (GA) <17 weeks were randomized to Breezing™ (N=16) or control (N=12) for 13 weeks. The Breezing™ group used a real-time metabolism tracker to obtain REE. Anthropometrics, diet, and sleep data were collected every 2 weeks. Rate of GWG was calculated as weight gain divided by total duration. Early (GA weeks 14-21), late (GA weeks 21-28), and overall (GA week 14-28) changes in macronutrients, sleep, and GWG were calculated. Mediation models were constructed using SPSS PROCESS macro using a bootstrap estimation approach with 10,000 samples. The majority of women were non-Hispanic Caucasian (78.6%). A total of 35.7% (n=10), 35.7% (n=10), and 28.6% (n=8) were normal weight, overweight, and obese, respectively, with 83.3% (n=10) and 87.5% (n=14) of the Control and Breezing™ groups gaining above IOM GWG recommendations. At baseline, macronutrient consumption did not differ. Overall (Breezing™ vs. Control; M diff=-349.08±150.77, 95% CI: -660.26 to -37.90, p=0.029) and late (M diff=-379.90±143.89, 95% CI:-676.87 to -82.93, p=0.014) changes in energy consumption significantly differed between the groups. Overall (M diff=-22.45±11.03, 95% CI: -45.20 to 0.31, p=0.053), late (M diff=-23.16±11.23, 95% CI: -46.33 to 0.01, p=0.05), and early (M diff=20.3±10.19, 95% CI: -0.74 to 41.34, p=0.058) changes in protein differed by group. Nocturnal total sleep time differed by study group (Breezing vs. Control; M diff=-32.75, 95% CI: -68.34 to 2.84, p=0.069). There was a 11.5% increase in total REE throughout the study. Early changes in REE (72±211 kcals) were relatively small while late changes (128±294 kcals) nearly doubled. Interestingly, early changes in REE demonstrated a moderate, positive correlation with rates of GWG later in pregnancy (r=0.528, p=0.052), suggesting that REE assessment early in pregnancy may help predict changes in GWG. Changes in macronutrients did not mediate the relationship between the intervention and GWG, nor did sleep mediate relationships between dietary intake and GWG. Future research evaluating REE and dietary composition throughout pregnancy may provide insight for appropriate GWG recommendations.
ContributorsVander Wyst, Kiley Bernhard (Author) / Whisner, Corrie M (Thesis advisor) / Reifsnider, Elizabeth G. (Committee member) / Petrov, Megan E (Committee member) / Buman, Matthew (Committee member) / Shaibi, Gabriel Q (Committee member) / Arizona State University (Publisher)
Created2019
Description
Introduction: Cystic fibrosis (CF) is the most common life-shortening autosomal recessive genetic disease affecting Caucasians. The disease is characterized by a dysfunctional cystic fibrosis transmembrane regulator (CFTR) protein and aberrant mucus accumulation that subsequently alters the physicochemical environment in numerous organ systems. These mucosal perturbations have been associated with inflammation and microbial dysbiosis, most notably in the lungs and gastrointestinal (GI) tract. Genistein, a soy isoflavone and dietary polyphenol, has been shown to modulate CFTR function in cell cultures and murine models, as well exert sex-dependent improvement of survival rates in a CF mouse model. However, it is unknown whether dietary genistein affects gut microbiome diversity and community structure in cystic fibrosis. This study sought to examine associations between dietary genistein treatment and gut microbiome diversity and community structure in a murine model of CF. Methods: Twenty-four male and female mice homozygous for the DF508 CFTR gene mutation were maintained on one of three diet regimens for a 45-day period (n=11, standard chow; n=7, Colyte-treated water and standard chow; n=6, 600 mg dietary genistein per kg body weight). One fecal pellet was collected per mouse post-treatment, and microbial genomic DNA was extracted from the fecal samples, quantified, amplified, and sequenced on the Illumina MiSeq platform. QIIME 2 was used to conduct alpha- and beta-diversity analyses on all samples. Results: Measures of alpha-diversity were significantly decreased in the dietary genistein group as compared to either standard chow or Colyte groups. Measures of beta-diversity showed that community structure differed significantly between dietary treatment groups; these differences were further illustrated by distinct clustering of taxa as shown by principal coordinates analysis plots. Conclusion: This 3-arm parallel experimental study showed that dietary genistein treatment was associated with decreased microbial diversity and differences in microbial community structure in DF508 mice.
ContributorsArgo, Katy Bryana (Author) / Whisner, Corrie M (Thesis advisor) / Al-Nakkash, Layla (Committee member) / Sweazea, Karen L (Committee member) / Arizona State University (Publisher)
Created2019
Description
Job burnout, a prolonged reaction to job stress, includes mental and physical aspects of exhaustion related to professional work life. Linked to individual health-related problems, decreased job satisfaction, poor organizational commitment, and higher turnover, burnout poses a problem for both employees and organizations. The nursing profession identifies the prevalence of burnout and the resulting harmful effects in many settings, yet until now, rural critical access hospital settings have not been considered. To build and maintain a competent, healthy rural nursing workforce that responds innovatively to growing healthcare needs, it is important to examine burnout levels in rural nurses and to identify factors that might be associated with mitigating burnout.
This study focuses on how psychological capital, socio-demographic and organizational work-related factors are associated with burnout in this population. This cross-sectional, descriptive correlational study employed the Maslach Burnout Inventory for Health Professionals, the Psychological Capital Questionnaire, and a sociodemographic questionnaire assessing individual and organizational work-related factors as self-report tools. Descriptive statistics, correlations, and regression analyses were performed to assess aspects of the nurses’ work environment, while describing the relationships among the variables.Means and standard deviations were examined across key variables and compared to reports from other studies. Hypotheses predicted psychological capital would be associated with burnout (negatively associated with emotional exhaustion and depersonalization, positively associated with personal accomplishment), and that individual sociodemographic and organizational work-related factors would also be associated with BO. It was further hypothesized that PsyCap would moderate the relationship between work-related factors and BO.
Maslach Burnout Inventory results reveal similar findings to those in the global sample. However, levels of emotional exhaustion and professional accomplishment were greater in our rural nurse sample compared to published values. Higher levels of psychological capital were found to be related to decreases in depersonalization and correlated to greater professional accomplishment. Psychological capital was not found to moderate associations within this study. Intent to stay more than one year had a strong, negative correlation with emotional exhaustion. The findings suggest burnout in this sample resembles that of the global problem and sets a baseline from which psychological capital trainings may be built.
This study focuses on how psychological capital, socio-demographic and organizational work-related factors are associated with burnout in this population. This cross-sectional, descriptive correlational study employed the Maslach Burnout Inventory for Health Professionals, the Psychological Capital Questionnaire, and a sociodemographic questionnaire assessing individual and organizational work-related factors as self-report tools. Descriptive statistics, correlations, and regression analyses were performed to assess aspects of the nurses’ work environment, while describing the relationships among the variables.Means and standard deviations were examined across key variables and compared to reports from other studies. Hypotheses predicted psychological capital would be associated with burnout (negatively associated with emotional exhaustion and depersonalization, positively associated with personal accomplishment), and that individual sociodemographic and organizational work-related factors would also be associated with BO. It was further hypothesized that PsyCap would moderate the relationship between work-related factors and BO.
Maslach Burnout Inventory results reveal similar findings to those in the global sample. However, levels of emotional exhaustion and professional accomplishment were greater in our rural nurse sample compared to published values. Higher levels of psychological capital were found to be related to decreases in depersonalization and correlated to greater professional accomplishment. Psychological capital was not found to moderate associations within this study. Intent to stay more than one year had a strong, negative correlation with emotional exhaustion. The findings suggest burnout in this sample resembles that of the global problem and sets a baseline from which psychological capital trainings may be built.
ContributorsMcCay, Rebecca (Author) / Larkey, Linda K (Thesis advisor) / Kelly, Lesly (Committee member) / Todd, Michael (Committee member) / Arizona State University (Publisher)
Created2019
Description
Background: Nearly 95% of Americans will develop hypertension, and 67% will not seek treatment. Furthermore, hypertension is the leading risk factor for coronary heart disease. While previous studies have increased the use of blood pressure medication among patients that have received hypertension education, medications may not work for everyone. Due to the life-threatening nature of this condition, it is essential to find an effective alternative for treatment. The purpose of this study was to examine the impact of organometallic complex supplementation on hypertension and left ventricular hypertrophy in 6-week old male Sprague-Dawley rats that were fed either standard rodent chow or a high fat diet for 10 weeks at a university in Arizona.
Methods: Forty-two healthy six-week old male Sprague-Dawley rats were randomly assigned to one of three groups: plain water control, 0.6 mg/ml organometallic complex or 3.0 mg/ml organometallic complex as soon as they arrived. Each rat was then housed individually to prevent the sharing of microbiota through coprophagia. Rats in each treatment group were further divided into two dietary groups that were fed either a high fat diet containing 60% kcal fat that was changed every three days or standard rodent chow. Researchers were not blind to which rat was in each group. At the end of the 10-week study, rats were euthanized with an overdose of sodium pentobarbital (200 mg/kg, i.p.). Heart, left ventricle of the heart, liver, and spleen masses were recorded for each animal. Data were analyzed by two-way ANOVA using SigmaPlot 10.0 software.
Results: At the conclusion of this study, the left ventricle mass of the rats in the high fat diet group were significantly larger than those in the chow group. Neither dose of the organometallic complex supplement prevented these effects induced by high fat feeding.
Conclusion: The organometallic complex supplement was not effective at mitigating the effects of a high fat diet on cardiac hypertrophy in rats. Therefore, this supplement should not be used to treat cardiac hypertrophy.
Methods: Forty-two healthy six-week old male Sprague-Dawley rats were randomly assigned to one of three groups: plain water control, 0.6 mg/ml organometallic complex or 3.0 mg/ml organometallic complex as soon as they arrived. Each rat was then housed individually to prevent the sharing of microbiota through coprophagia. Rats in each treatment group were further divided into two dietary groups that were fed either a high fat diet containing 60% kcal fat that was changed every three days or standard rodent chow. Researchers were not blind to which rat was in each group. At the end of the 10-week study, rats were euthanized with an overdose of sodium pentobarbital (200 mg/kg, i.p.). Heart, left ventricle of the heart, liver, and spleen masses were recorded for each animal. Data were analyzed by two-way ANOVA using SigmaPlot 10.0 software.
Results: At the conclusion of this study, the left ventricle mass of the rats in the high fat diet group were significantly larger than those in the chow group. Neither dose of the organometallic complex supplement prevented these effects induced by high fat feeding.
Conclusion: The organometallic complex supplement was not effective at mitigating the effects of a high fat diet on cardiac hypertrophy in rats. Therefore, this supplement should not be used to treat cardiac hypertrophy.
ContributorsMcCormick, Kelly Ann (Author) / Sweazea, Karen L (Thesis advisor) / Whisner, Corrie M (Committee member) / Alexon, Christy (Committee member) / Arizona State University (Publisher)
Created2019
Description
Purpose: The purpose of this study is to examine perceptions of medical-surgical nurses of alcohol-abusing patients admitted to an acute care facility Background: Studies report that many nurses have negative feelings about substance-abusing patients (Neville & Roan, 2014). It has been found nurses report a lack of knowledge about substance abuse disorders, as well as a view that substance abusing patients are more emotionally challenging and dangerous, often leading to decreased motivation and lower levels of job satisfaction (van Boekel, Brouwers, van Weeghel & Garrestsen, 2013). However, studies have found that additional education can positively impact nurses' perceptions (Arthur, 2001). Methods/Approach: This study is a descriptive design using a 17-question 2-part survey. The first part of the survey includes seven demographic questions pertaining to the participants' characteristics and experiences. The second part of the survey is adapted from the Short Alcohol and Alcohol Problems Perception Questionnaire (SAAPPQ), a valid and reliable instrument used to assess healthcare providers' attitudes toward working with alcohol-abusing patients. Results: Eighty four medical-surgical nurses participated in the study. Over half reported having four hours or less of continuing education on alcohol abuse disorder. Regression analyses identified positive relationships between factors, particularly continuing education, on perceptions of alcohol-abusing patients. Conclusions/Implications: Results of this study can be used to determine what factors contribute to nurses' perceptions of alcohol-abusing patients in the medical-surgical unit, therefore aiding in identifying and developing effective policies, protocols, and interventions aimed at improving quality of patient care in this specific patient population.
ContributorsScalise, Bailey Nicole (Author) / Hosley, Brenda (Thesis director) / Baumhover, Nancy (Committee member) / Todd, Michael (Committee member) / Arizona State University. College of Nursing & Healthcare Innovation (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
Physician's cultural competence is important in healthcare because it helps improve quality of care as well as address healthcare disparities among minorities. Additionally, it positively correlates with patient satisfaction, which has been shown to increase treatment adherence and improve medical outcomes. This study investigated the effect of physician's cultural competence on patient satisfaction in a Latino population and how these compared to a European-American population. Physician's Cultural Competence for Patient Satisfaction (PCCPS) scale developed by Dr. Ahmed was utilized in this study. The PCCPS scale deconstructed physician's cultural competence into five subcategories: Macro-cultural, Proxemics/Chronemics, Language, Patient-centered Cultural Competence, and Patient Satisfaction. This scale and various demographic questions were incorporated into a survey that was distributed amongst participating patients. Gathered data was analyzed to determine which demographic factors and subcategories of physician's cultural competence were more relevant or important when interacting with patients that have distinct cultural backgrounds, such as Latino and European-American. Findings from this study will add to building a foundation of evidence in health care that advocates for a more holistic approach to medicine and incorporates cultural competence as an important determinant to predicting health care outcomes.
ContributorsAragon-Sierra, Ana Maria (Author) / Stevens, Carol (Thesis director) / O'Haver, Judy (Committee member) / Todd, Michael (Committee member) / College of Integrative Sciences and Arts (Contributor) / W.P. Carey School of Business (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
Almost sixty percent of adults within the United States are in a married or committed, cohabiting relationship. This study sought to examine the trajectory of relationship satisfaction over 14 consecutive days employing an ecological momentary assessment (EMA) method. Daily reports of relationship satisfaction were collected via a smartphone application developed from the LifeData platform. Phone-based interview questions posed one week after the 14-day EMA period afforded evaluation of usability and acceptability, in preparation for a much larger study of couples coping with cancer. Twenty-seven adults in a married or committed, cohabitating relationship served as participants, recruited from researchmatch.org. (These individuals were not coping with cancer.) Participants received a smartphone notification between 7:30pm and 8:30pm each day, with 45 minutes to begin recording their responses. A single item from the Dyadic Adjustment Scale (item #31) was used to assess relationship satisfaction. Findings revealed a marginally significant increase in satisfaction over the course of 14 days (b = 0.04, t = 1.85, p = .077). In addition, an intraclass correlation (ICC) value of 0.59 indicated larger between-person variability than within-person variability, suggesting that satisfaction varies more from one individual to another than it does within individuals over time. Finally, plots of mean relationship satisfaction by the standard deviation of relationship satisfaction showed lower variability in day-to-day satisfaction among those who were on average more satisfied with their relationship compared to those who were on average less satisfied. Feedback regarding convenience and ease of the application indicated favorable attitudes towards smartphone-based data collection.
ContributorsHagan, Rachel Claire (Author) / Langer, Shelby (Thesis director) / Randall, Ashley (Committee member) / Todd, Michael (Committee member) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05