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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Childhood Risk and Resilience Profiles and Their Longitudinal Associations with Adolescent Internalizing and Externalizing Symptom Profiles

Burgers, Darcy Elizabeth January 2018 (has links)
Within the field of developmental psychopathology, research has repeatedly demonstrated that there are multiple complex and dynamic pathways originating in childhood that may lead to the development of internalizing and externalizing problems among adolescents. However, additional research is needed that examines the unique and concurrent contributions among child-, parent-, and family-level risk and resilience factors during childhood that may be associated with internalizing and externalizing problems in adolescence. To address this gap, the current study utilized a person-centered approach to identify profiles of risk and resilience factors among youth in middle childhood (ages 10-12) characterized by the quality and quantity of (a) child-level factors (i.e., temperamental features, executive functioning abilities); (b) parent-level factors (i.e., parental acceptance, control, disciplinary style); and (c) family-level factors (i.e., family cohesion, conflict, organization) among a sample of 775 participants (Aim 1). The study also examined internalizing and externalizing symptom profiles in adolescence (age 16) by identifying subgroups of youth characterized by the quality and quantity of internalizing and externalizing problems within each of the identified childhood risk profiles (Aim 2). Lastly, the study investigated transitions from childhood risk profiles to adolescent symptom profiles (Aim 3). Results demonstrated that a four-class model best fit the data in regard to childhood risk profiles, with classes of youth most saliently characterized by (a) accepting parents, (b) controlling parents, (c) disengaged parents, and (d) chaotic homes. With regard to adolescent internalizing and externalizing symptom profiles, results indicated a three-class model best fit the data and included classes distinguished by the presence of (a) low symptoms, (b) moderate symptoms, and (c) high internalizing and moderate externalizing symptoms. Most youth from the four childhood risk profiles transitioned to the low symptom profile at age 16; however, youth from the chaotic home profile were more likely to transition into one of the two higher-level symptom profiles. Findings enhance our understanding of risk and resilience by identifying distinct childhood risk profiles and corresponding adolescent symptom profiles. These findings will have implications for both prevention and treatment efforts that target specific risk factors within each risk profile. / Psychology
2

Are perfectionistic and stressed athletes the main victims of the «silent epidemic»? A prospective study of personal and interpersonal risk factors of overuse injuries in sport

Martin, Simon January 2018 (has links)
Background: Overuse injuries (OI) account for a substantial part of sport injury incidence among athletes of various sports and levels. They lead to serious consequences for athletes’ physical and mental health, as well as athletic performance. Despite the gradual onset of symptoms, athletes often persevere in training and competing. The present study aimed to identify psychological risk profiles suggested to explain maladaptive behaviors prior or in response to first signs of overuse injuries. Design: Prospective cohort study. Methods: 149 athletes representing 10 individual and team sports responded to a range of questionnaires regarding personal (athletic identity, perfectionistic concerns, grit and negative life stress) and interpersonal (coach-athlete relationship) psychological traits. By using the mobile application Briteback®, participants subsequently answered the OSTRC Overuse Injury Questionnaire on a weekly basis during a 10 weeks period. A latent profile analysis was used in order to identify different psychological profiles. Results: Athletes were classified into 3 latent profiles regarding their psychological characteristics: profile 1 was labelled a “perfectionistic OI risk profile”, profile 2 a “negative stress OI risk profile” whereas profile 3 was called a “low risk profile for OI”. Indeed, athletes in profile 1 and 2 were found to be significantly more often affected by overuse problems than individuals in profile 3 (71% of the time, χ² (2) = 9.62, Hedges’ g = (0.71), p < .01 and 70% of the time χ² (2) = 9.13, Hedges’ g = (0.68), p < .01 vs 45% of the time), with athletes in profile 1 also experiencing more substantial overuse problems than for profile 3 (35% vs 21% of the time; χ² (2) = 4.12, Hedges’ g = (0.50), p < .05). Conclusions: Our findings support the existence of two “risk profiles” in which athletes are characterized either by elevated perfectionistic concerns or by high negative stress. These findings could be explained by the perseverative and rigid personality of perfectionistic concerns individuals and by the hypothesis of a synergy between psychological and physiological stress for negative stressed athletes. Coaches should pay particular attention to the psychological characteristics of their athletes in order to prevent overuse injury occurrence and worsening, especially those with high perfectionistic concerns and negative life stress. Cognitive behavioral interventions supporting at-risk athletes in reframing their rule-governed behaviors might decrease the risk of overuse problems.
3

Environmental information : A study of environmental disclosure in financial analyst reports, annual reports, CSR reports and environmental risk profiles

Boström, Daniel January 2008 (has links)
<p>The awareness of environmental issues has increased among the public the last decades. An environmental movement is occurring and companies are beginning to adapt themselves and their business activities to the changing view of environmental issues. Greater attention are turning to companies around the world due to the view that they have a responsibility concerning environmental and sustainability matters in their business operations. The development of environmental guidelines such as the Global Reporting Initiative and the presenting of separate Corporate Social Responsibility (CSR) reports illustrate the emerged demand of an environmental awareness from various stakeholders. Government regulations and inter-continental agreements of carbon taxes, emission trade rights and various environmental targets are influencing the operations and the environmental approach for the companies.</p><p>An important link in the information chain is the financial analysts and their role as information intermediaries. The characteristics of their profession combined with their expertise knowledge of evaluating companies are reasons behind their function in the investment value chain. Traditionally, the valuation of companies has been based on financial figures and the models derive from typical tangible assets such growth numbers, estimated future earnings and cash flow. Environmental issues have throughout the years been considered of secondary importance due to the specific kind of information it represents.</p><p>This study examines factors influencing the amount of environmental information presented in financial analyst reports. The amount of environmental information presented in annual reports, CSR reports and an environmental risk profile developed by GES Investment Services have been selected as predictor variables to determine the amount of environmental information in the financial analysts’ reports.</p><p>40 companies from the industrial sector have been included in the study and the results reveal that no or very little environmental information can be found in the financial analyst reports. The financial analysts’ seem to prioritize other kinds of information when evaluating companies and creating analyst reports. The study also reveals that companies with separate CSR reports seem to have a higher amount of environmental information presented in annual reports as well as a better environmental risk profile.</p>
4

Environmental information : A study of environmental disclosure in financial analyst reports, annual reports, CSR reports and environmental risk profiles

Boström, Daniel January 2008 (has links)
The awareness of environmental issues has increased among the public the last decades. An environmental movement is occurring and companies are beginning to adapt themselves and their business activities to the changing view of environmental issues. Greater attention are turning to companies around the world due to the view that they have a responsibility concerning environmental and sustainability matters in their business operations. The development of environmental guidelines such as the Global Reporting Initiative and the presenting of separate Corporate Social Responsibility (CSR) reports illustrate the emerged demand of an environmental awareness from various stakeholders. Government regulations and inter-continental agreements of carbon taxes, emission trade rights and various environmental targets are influencing the operations and the environmental approach for the companies. An important link in the information chain is the financial analysts and their role as information intermediaries. The characteristics of their profession combined with their expertise knowledge of evaluating companies are reasons behind their function in the investment value chain. Traditionally, the valuation of companies has been based on financial figures and the models derive from typical tangible assets such growth numbers, estimated future earnings and cash flow. Environmental issues have throughout the years been considered of secondary importance due to the specific kind of information it represents. This study examines factors influencing the amount of environmental information presented in financial analyst reports. The amount of environmental information presented in annual reports, CSR reports and an environmental risk profile developed by GES Investment Services have been selected as predictor variables to determine the amount of environmental information in the financial analysts’ reports. 40 companies from the industrial sector have been included in the study and the results reveal that no or very little environmental information can be found in the financial analyst reports. The financial analysts’ seem to prioritize other kinds of information when evaluating companies and creating analyst reports. The study also reveals that companies with separate CSR reports seem to have a higher amount of environmental information presented in annual reports as well as a better environmental risk profile.
5

Relations and effects of dietary protein and body composition on cardiometabolic health

Robert E Bergia (8801123) 06 May 2020 (has links)
<p>Obesity has ascended to become the primary modifiable cause of death in the United States. New evidence has called into question the utility of BMI – the typical index of obesity – in predicting cardiometabolic disturbances. The distribution of body fatness may be just as important as the total quantity. Intermuscular adipose tissue (IMAT) has emerged as a distinct subset of adipose in skeletal muscle that may be particularly metabolically deleterious. Typically, sections of either the calf or thigh are used as proxy measurements for whole-body IMAT in investigations. However, IMAT dispersion may not be consistent across tissues, instead infiltrating specific muscle or muscle compartments, and these have may have different metabolic consequences. The study described in Chapter 2 was designed to address this possibility and investigate and compare associations among thigh and calf IMAT stores with indices of cardiometabolic health. The strength of the relationship between IMAT and glucose control-related indices of cardiometabolic health was dependent upon anatomic location. Specifically, thigh IMAT is a better predictor of cardiometabolic risk that calf IMAT. </p> <p>Skeletal muscle has gained increased recognition in recent years for its importance in promotion of health and wellness throughout the life course. While treatment models addressing issues of declining muscle mass and strength with age previously focused on older adults, the importance of utilizing a life course model to promote skeletal muscle health at all ages was more recently recognized. There is consistent evidence that higher-protein diets modestly improve body composition. However, women are at greater risk for not meeting protein requirements and seem to be less willing to adopt strategies to achieve greater protein intake, such as protein supplementation, for fear that it may cause ‘bulkiness’. Therefore, the study described in Chapter 3 was designed to critically evaluate the effect of whey protein supplementation on body composition changes in women via a systematic review & meta-analysis of published randomized controlled trials. It was hypothesized that whey protein supplementation would moderately improve body composition but would not cause excessive muscle hypertrophy. Consistent with our hypothesis, whey protein supplementation improved body composition by modestly (<1%) increasing lean mass, without influencing fat mass.</p> <p>Dietary protein and skeletal muscle are conceptually inseparable; protein is often only considered in terms of how it impacts skeletal muscle-related outcomes. However, it is of interest to determine if the proposed beneficial effects of increased dietary protein consumption extend beyond skeletal muscle. Consumption of higher protein diets result in lower resting blood pressure, but the potential for protein to attenuate acute exercise blood pressure responses is unclear. The study described in Chapter 4 was designed to investigate the effects of meals with different amounts of protein on blood pressure responses to exercise in a randomized, cross-over trial. We hypothesized that consuming the higher-protein meal would attenuate the blood pressure responses to exercise and result in a more robust post-exercise hypotensive response. Contrary to our hypothesis, a higher-protein meal does not attenuate exercise-induced blood pressure responses compared to a lower-protein meal. These findings build upon previous research suggesting that the beneficial effect of chronically elevated protein intake on blood pressure is typically not observed in an acute setting by extending these findings to encompass blood pressure responses to acute responses to exercise.</p> <p>The three studies packaged herein utilize different techniques and report on different outcomes, but conceptual threads unite these works which augment the collective findings. Future researchers investigating the effects of protein on skeletal muscle anabolism can: 1) learn of the importance of proper reflection on surrogate measures and potential for anatomic-specific effects from the IMAT findings (Chapter 2), 2) appreciate the relevance of energy and training states in modulating responses from the WP meta-analysis (Chapter 3), and 3) recognize the importance of holistic approaches and employing challenges to reveal heterogeneity from the protein and BP trial (Chapter 4). Taken together, the research presented in this dissertation forwards our understanding of the relations and effects of dietary protein with different components of body composition on cardiometabolic health. </p>
6

The Effects of Red Meat Consumption Within a Healthy Dietary Pattern on Cardiovascular Risk: the Importance of Gut Microbiota

Yu Wang (13162944) 27 July 2022 (has links)
<p>Accumulating evidence from randomized-controlled, full-feeding trials suggests neutral to beneficial effects of consuming lean and unprocessed red meat within a healthy dietary pattern on cardiovascular health. It is unclear how red meat interacts with the dietary pattern and the host in mediating its health effects. The gut microbiome provides a novel perspective in understanding the diet-host relationship for its abilities to metabolize dietary components including those within red meat and influence cardiovascular health. Prior to starting our study, we identified a lack of evidence in the English literature for the effects of consuming lean red meat, in unprocessed or processed forms, on gut microbiota in the context of a controlled healthy dietary pattern. Our findings presented in this dissertation demonstrate differential effects of consuming unprocessed versus processed red meat on gut microbiota. Consistent with previous research, we observed cardiovascular improvements induced by the healthy dietary pattern independent of lean red meat intakes among young adults with apparently healthy cardiovascular profiles. Importantly, with three intervention periods, we found consistent and reproducible changes in both gut microbiota and cardiovascular risk factors when repeatedly adopting and abandoning a healthy dietary pattern. Collectively, findings in this dissertation highlight the importance of gut microbiota in potentially mediating or responding to diet-induced cardiovascular improvements. Future research should investigate the changes in the function of gut microbiota induced by healthy dietary patterns containing red meat. Studies assessing the unique food matrix of processed versus unprocessed animal- or plant-based protein-rich foods are also warranted. Additionally, dietary strategies should focus on promoting healthy dietary modifications and enhancing dietary adherence for long-term cardiovascular benefits. </p>

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