This study used structural equation modeling (SEM) to examine how sleep problems, Body Mass Index (BMI), and poverty were related to several work, personal, and family variables in a sample of married male and female workers in the United States. The data for this study came from the National Study of the Changing Workforce (NSCW) 2008. This large, nationally representative dataset provided a resource for examining potential gender differences in variables that have been linked to sleep problems and increases in BMI, as well as how each of these variables relate to several work, personal, and family life outcomes, including marital satisfaction, work-to-family conflict, family-to-work conflict, self-reported health (SRH), and life satisfaction. Poverty, work hours, family meals, and workplace flexibility were analyzed in the model to assess their connections to sleep problems and BMI, as well as the five outcome variables. The SEM analysis utilized a multi-group gender comparison by analyzing differences between two group models consisting of married male employees (n = 1105) and married female employees (n = 1019) in the U.S. The model was significantly different for married males than married females. Several of the individual pathways in the model also differed significantly by gender. Family dinners and workplace flexibility seem to provide a positive influence on health and satisfaction outcomes, and relate negatively to sleep problems and BMI, as well as both types of work and family conflict. Sleep problems also were related to increased work-family conflict, and decreased health and satisfaction outcomes. Also, BMI scores were negatively related to self-reported health and life satisfaction. Overall, this study showed that several work and family demands and resources are related to sleep problems and BMI. It also demonstrated that sleep problems and BMI were generally related to negative outcomes in work, personal, and family life.

Background: The association of body mass index (BMI) and long-term prognosis and outcome of patients with perihilar cholangiocarcinoma (pCCA) has not been well defined. The aim of this study was to evaluate clinicopathologic and oncologic outcomes with pCCA undergoing resection, according to their BMI. Methods: Patients undergoing liver resection in curative intention for pCCA at a tertiary German hepatobiliary (HPB) center were identified from a prospective database. Patients were classified as normal weight (BMI 18.5–24.9 kg/m2), overweight (BMI 25.0–29.9 kg/m2) and obese (>30 kg/m2) according to their BMI. Impact of clinical and histo-pathological characteristics on recurrence-free survival (RFS) were assessed using Cox proportional hazard regression analysis among patients of all BMI groups. Results: Among a total of 95 patients undergoing liver resection in curative intention for pCCA in the analytic cohort, 48 patients (50.5%) had normal weight, 33 (34.7%) were overweight and 14 patients (14.7%) were obese. After a median follow-up of 4.3 ± 2.9 years, recurrence was observed in totally 53 patients (56%). The cumulative recurrence probability was higher in obese and overweight patients than normal weight patients (5-year recurrence rate: obese: 82% versus overweight: 81% versus normal weight: 58% at 5 years; p = 0.02). Totally, 1-, 3-, 5- and 10-year recurrence-free survival rates were 68.5%, 44.6%, 28.9% and 13%, respectively. On multivariable analysis, increased BMI (HR 1.08, 95% CI: 1.01–1.16; p = 0.021), poor/moderate tumor differentiation (HR 2.49, 95% CI: 1.2–5.2; p = 0.014), positive lymph node status (HR 2.01, 95% CI: 1.11–3.65; p = 0.021), positive resection margins (HR 1.89, 95% CI:1.02–3.4; p = 0.019) and positive perineural invasion (HR 2.92, 95% CI: 1.02–8.3; p = 0.045) were independent prognostic risk factors for inferior RFS. Conclusion: Our study shows that a high BMI is significantly associated with an increased risk of recurrence after liver resection in curative intention for pCCA. This factor should be considered in future studies to better predict patient’s individual prognosis and outcome based on their BMI.

This study proposes age- and sex-specific percentiles for serum cobalamin and folate, and analyzes the effects of sex, age, body mass index (BMI), and socioeconomic status (SES) on cobalamin and folate concentrations in healthy children and adolescents. In total, 4478 serum samples provided by healthy participants (2 months–18.0 years) in the LIFE (Leipzig Research Centre for Civilization Diseases) Child population-based cohort study between 2011 and 2015 were analyzed by electrochemiluminescence immunoassay (ECLIA). Continuous age-and sex-related percentiles (2.5th, 10th, 50th, 90th, 97.5th) were estimated, applying Cole’s LMS method. In both sexes, folate concentrations decreased continuously with age, whereas cobalamin concentration peaked between three and seven years of age and declined thereafter. Female sex was associated with higher concentrations of both vitamins in 13- to 18-year-olds and with higher folate levels in one- to five-year-olds. BMI was inversely correlated with concentrations of both vitamins, whilst SES positively affected folate but not cobalamin concentrations. To conclude, in the assessment of cobalamin and folate status, the age- and sex-dependent dynamic of the respective serum concentrations must be considered. While BMI is a determinant of both vitamin concentrations, SES is only associated with folate concentrations.

This is the final submission of my Masters Thesis. / OBJECTIVES: Cognitive disordered eating behaviours (body shape concerns) are prevalent among youth with higher unhealthy body mass indexes (BMIs), while physical disordered eating behaviours (unhealthy changes in eating habits) are common mechanisms in determining future BMI. This thesis investigates the associations between these disordered eating behaviours and BMI categories and evaluates potential covariate modification. As a secondary objective, this thesis investigates the association between unhealthy eating patterns and BMI categories. METHODS & DATA ANALYSIS: This study was conducted among Canadian youth aged 12-17 (n=12,350). Body shape concerns were measured as the frequency of having a preoccupied desire to be thin while changing eating habits was measured as the frequency of changing eating habits to manage weight. Unhealthy eating patterns were defined as frequent restaurant eating, energy drink consumption, and skipping breakfast. Categorical BMI classifications consisted of obesity, overweight and normal/underweight. Adjusted multinomial logistic regression models were constructed. Covariates were independently tested for statistical interaction in the primary relationships. Measures of association were reported as adjusted odds ratios (ORs) with 95% confidence intervals. RESULTS: Having a preoccupied desire to be thin was associated with increased odds of being overweight and having obesity. These relationships were modified by sex, physical activity, and sleep. Changing eating habits to manage weight was associated with increased odds of being overweight and having obesity. These relationships were modified by sex. Skipping breakfast increased the odds of being overweight and having obesity, while consuming energy drinks increased the odds of having obesity. CONCLUSION: Over 40% of the sample experienced some frequency of having body shape concerns or changing eating habits to manage weight. These disordered eating behaviours increase the odds of being overweight and having obesity. Continued monitoring through national–level surveys, will be crucial in understanding changes in rates of disordered eating behaviour. / Thesis / Master of Public Health (MPH)

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Övervikt och fetma hos barn och ungdomar har blivit allt mer förekommande och prevalensen ökar dramatiskt över hela världen. Sedan raffinerade kolhydrater introducerades har även kariessjukdomen fått större utbredning. Då det finns gemensamma bakomliggande faktorer som påverkar både vikt och kariesprevalens vill vi i vår litteraturstudie undersöka om det finns något samband mellan body mass index (BMI) och kariesprevalens för barn och ungdomar. Efter sökningar i den medicinska databasen PubMed på artiklar från de senaste 5 åren fann vi oeniga resultat med jämn fördelning. Resultatet av litteraturstudien är att två av de undersökta studierna tyder på att det inte finns något samband mellan BMI och kariesprevalens, lika många anser att det finns en svag eller möjlig association, medan två studier ansåg att det fanns ett signifikant samband. Majoriteten av de undersökta studierna kan alltså inte se något signifikant samband mellan BMI och kariesprevalens. För att säkerställa ett samband eller ej krävs fler studier och en djupare analys av tillförlitligheten i respektive studie.

Thesis advisor: Eric Dearing / Socioemotional difficulties in childhood have been associated with body weight status and the subsequent development of obesity later in life. However, existing research often overlooks the developmental and dynamic nature of socioemotional functioning. Additionally, there is a lack of systematic examination of this relation across varied aspects of socioeconomic risks. Recent research has highlighted a seemingly paradoxical effect, wherein socioemotional competence is associated with adverse health outcomes among socioeconomically disadvantaged minority youths. Yet, obesity per se has received little attention in this literature. The present dissertation adds to the extant literature by examining links between socioemotional well-being and body weight across socioeconomic contexts. Specifically, the present dissertation provides three empirical papers using secondary analyses of large-scale longitudinal studies of children and adolescents to examine associations between sustained socioemotional competency and body weight. In each paper, the potential moderating role of socioeconomic risks and concerns for robustness across children’s racial/ethnic backgrounds are foci. Paper 1 estimated developmental trajectories of behavior problems from ages 5-6 to 13-14 and assessed whether body mass index (BMI) at ages 21-22 varied by behavior problem trajectory patterns, poverty status, and their interaction. Paper 2 identified self-control trajectories during elementary school, examined their impact on fifth-grade BMI, and explored whether the association between self-control trajectories and BMI differed by poverty status. Lastly, Paper 3 examined associations between self-control across the elementary school years and BMI at the end of elementary school, while allowing these associations by poverty dynamics and exposure to an accumulation of socioeconomic and contextual risks. Across three papers, all analyses were conducted for the entire sample and by racial/ethnic group. Results generally supported the protective role of socioemotional competency in preventing unhealthy body weight, regardless of socioeconomic risks. However, this relation was often less evident for children of color than for White children. These findings are interpreted with concern for the complex roles of disadvantage in children’s lives as pertains to social-emotional adjustment and body weight. The practical significance of the papers is focused on informing intervention efforts based on improved understandings of when, for whom, and under what conditions socioemotional competency is associated with health benefits, risks, or neither. / Thesis (PhD) — Boston College, 2024. / Submitted to: Boston College. Lynch School of Education. / Discipline: Counseling, Developmental and Educational Psychology.

This research study investigates the impact of being obese on all the facets of psychological well-being of the adolescent learner. Definitions for adolescence, obesity and psychological well-being are provided. For the purpose of this study an adolescent is considered to be a scholar between 12 and 18 years. The various methods of measuring obesity are presented and briefly discussed. Body Mass Index is internationally the most commonly used indicator of obesity and was therefore applied by the researcher. The possible causes of obesity are also discussed in this study. Presently there is no accepted standardised definition of psychological well-being, which it was found involves different aspects for different people. This phenomenon varies within various circumstances, is multifaceted in character and is not static. The researcher made use of projection media, expression media, interviews and standardised media to obtain relevant information. The main conclusion is that body image and physical appearance as experienced by an obese adolescent do have a negative impact on the individual's psychological well-being. / Educational Studies / M.Ed.(Specialisation in Guidance and Counselling)

Submitted in partial compliance with the requirements for the Master of Technology: Chiropractic, Durban University of Technology, 2014. / Background: Poor balance is a risk factor for injury in adolescent sport including soccer. Despite the rapid growth in female adolescent soccer especially in South Africa, the association between balance and injury in this population has not been fully explored. This study aimed to determine the relationship between injury and balance. Static and dynamic balance was monitored as sway index (SI) and limits of stability direction control (LOSDC). Objectives: The objectives of this study were to determine the body mass index of adolescent female soccer players; to determine the prevalence of injury in adolescent female soccer players; to determine static balance as revealed by the sway index (SI); to determine dynamic stability as revealed by limits of stability direction control (LOSDC) and to correlate body mass index (BMI) to sway index and limits of stability. Method: Eighty adolescent female soccer players, between the ages of fourteen and eighteen, were recruited through convenience sampling from schools in the eThekwini district of KwaZulu-Natal. After obtaining informed consent and assent, participants completed questionnaires and were scheduled for the balance and BMI assessments. The objective data for each participant consisted of height, weight, Sway Index (SI) and Limits of Stability Direction Control (LOSDC) readings, measured using a stadiometer, electronic scale and Biodex Biosway Balance System (Biodex Medical Systems Inc., Shirley, New York) respectively. The subjective and objective data were analyzed using SPSS version 21.0 (SPSS Inc. Chicago, Ill, USA). Statistical tests included descriptive statistics using frequency and cross-tabulation. Inferential statistics using t-tests and Pearson’s correlations at a significance level of 0.05 was also incorporated. The testing of hypotheses was performed using Fisher’s Exact tests for nominal data and ordinal data. A p value of < 0.05 was considered as statistically significant. The statistical analysis also included Odds Ratio calculations. Results: The mean body mass index of the injured participants was 23.54±3.56 kg/m2 and the mean body mass index of the uninjured participants was 23.00±4.63. Only 27.5% of the participants sustained an injury. Injured participants performed poorly on average in the SI assessment involving their eyes open when standing on a soft surface. The results were similar for the LOSDC in the overall, right, left, backward-right and backward-left directions. However, there were no significant correlations calculated. Significant relationships existed between BMI and the SI assessments in the injured participants which involved standing on a firm surface with their eyes open (p = 0.05), their eyes closed when also standing on a firm surface (p = 0.05), their eyes open when standing on a soft surface (p = 0.02), and their eyes closed when standing on a soft surface (p = 0.04). A significant relationship also existed between BMI and LOS right direction control (p = 0.02). Conclusion: This research paper revealed that the body mass index as investigated in this study is similar to other studies involving female adolescents; soccer injury as investigated in this study is similar to other studies involving female adolescents; poor static and dynamic balance is not associated with injury in adolescent female soccer players and lastly, body mass index is linked to the balance of an individual.