View clinical trials related to Obesity.Filter by:
Background and objective: There is an alarming increase in obesity and unhealthy lifestyles in adolescents. This issue threatens to have a highly negative health and socioeconomic impact in the near future. The only way to tackle this epidemic is to implement effective preventive strategies able to positively impact on youth lifestyle behaviours. The school is the most appropriate environment for such an intervention. The main objective of this study is to evaluate the efficacy of a comprehensive educational school-based intervention in adolescents on cardiovascular health, including obesity/adiposity and metabolic profiles. The project consortium constitutes a unique framework of research groups at the forefront of novel and successful approaches aiming to healthier behaviours and dietary habits. Methodology: A cluster-randomized controlled trial involving 24 secondary schools in Spain will be carried out. Schools will be 1:1:1 randomized to receive a short-term (2-year) or a long-term (4-year) comprehensive educational program, or to receive the usual curriculum (control). Participants will be evaluated at baseline, and after 2 and 4 years with the following: weight scale, circumference measuring tape, bioelectrical impedance, dual energy X-ray absorptiometry, sphygmomanometer, blood analysis, saliva and urine analysis, accelerometers, and questionnaires. The primary outcome is the change in obesity and other health parameters from baseline to year 2 and 4, as assessed by the Ideal Cardiovascular Health score. Secondary outcomes include the change in adiposity, anthropometry and body composition parameters, physical activity and dietary habits, polyphenol and carotenoid intake, metabolomics and attitudes. Participants will be measured again when they reach 20 years old. Expected results: The investigators expects to show that a school-based educational intervention induces favourable lifestyle changes and improves cardiovascular health among Spanish adolescents, including obesity/adiposity and metabolic profiles. If successful, this strategy could be widely adopted having a meaningful effect on obesity and cardiovascular health promotion. Additionally, associations of health parameters with bioactive dietary compounds intake and metabolic profiles will be stablished.
CHAT is an internet-based weight loss research program designed for women with overweight or obesity who want to lose weight through dietary change and increased physical activity. Participants will be randomized into a group-based online program who meet via a text chat or a video chat.
The aim of the present study is to develop and validate the effects of a new cognitive behavioral therapy (CBT) using digital healthcare mobile apps such as Noom Coach and InBody.
Clinical trial to test the efficacy of an online platform based on behavior change principles in promoting weight loss among overweight and obese students and employees of the Federal University of Minas Gerais. The hypothesis is that participants of the group which use the platform with or without a dietitian coaching will lose more weight than those allocated to the group who receives dietary and physical activity orientations by educational videos only.
Aims: To investigate the effects of different food structures on appetite signals from the upper gastrointestinal tract. DESIGN: A randomised, controlled, clinical trial.
Obesity is associated with increased risk of several cancers. Suggested mechanisms mediating the obesity-cancer associations include hyperinsulinemia and altered IGF signaling, changes in sex hormone levels as well as altered secretion of adipokines and inflammatory proteins. However, little is known about the influence of lifetime adiposity on the relevant biomarkers. Moreover, although diet has been suggested to ameliorate the adverse metabolic effects of obesity, convincing evidence regarding how dietary factors may influence obesity-related carcinogenic pathways remains lacking. Thus, in the current project, the investigators aim to 1) examine the associations between trajectories of body fatness and plasma biomarker levels of the insulin/IGF system, sex hormones and biomarkers of inflammatory response including adipokines; 2) investigate how nutritional factors may modulate these obesity-related biomarkers. The investigators propose to utilize two large ongoing cohorts of US men and women, the Nurses' Health Study and Health Professionals Follow-up Study.
The Netherlands Epidemiology of Obesity (NEO) study is a population-based cohort study in 6671 men and women aged 45 to 65 years, with an oversampling of individuals with a BMI of 27 kg/m2 or higher. The NEO study is designed to investigate pathways that lead to common diseases and conditions. Men and women aged between 45 and 65 years with a self-reported BMI of 27 kg/m2 or higher living in the greater area of Leiden, the Netherlands, were eligible to participate in the NEO study. Participants were recruited via three recruitment strategies. First, participants were recruited by general practitioners in the area of Leiden, in the West of The Netherlands. Second, participants were recruited through advertisements in local newspapers and through posters distributed in public areas of Leiden and surroundings. Third, participants were recruited via the registries of three municipalities surrounding Leiden (Katwijk, Leiderdorp and Teylingen). Inhabitants of Katwijk and Teylingen aged between 45 and 65 years were invited to participate if they had a self-reported BMI of 27 kg/m2 or higher. All inhabitants aged between 45 and 65 years of Leiderdorp were invited to participate irrespective of their BMI, allowing for a reference distribution of BMI. Participants were invited to a baseline visit at NEO study centre of the LUMC after an overnight fast. Prior to this study visit, participants collected their urine over 24 h and completed a general questionnaire at home to report demographic, lifestyle and clinical information. The participants were asked to bring all medication they were using to the study visit. At the baseline visit an extensive physical examination was performed, including measurements of anthropometry, blood pressure, both fasting and postprandial blood sampling (30 minutes and 2.5 hours after a liquid mixed meal), ECG, carotid artery IMT, and pulmonary function tests. In random subsets of participants MRI of abdominal fat, brain, knee, heart function, and pulse wave velocity of the aorta was performed, as well as indirect calorimetry, accelerometry combined with continuous heart rate, and total sleep time with actigraphy. Participants are followed via their general practitioners and hospital registries for the incidence of common diseases and mortality.
The proposed study is a cluster randomized trial to test the effectiveness of a parental support programme in pre-school class to promote healthy dietary habits and physical activity and prevent obesity, delivered by teachers and school health services and in collaboration with primary care. The control condition is standard care in schools. The 6-month programme is carried out in schools in disadvantaged areas and is universal. It is based on Social Cognitive Theory and consists of four components: 1) Health information to parents regarding the child; 2) Motivational Interviewing with the parents by the school nurse concerning the child; 3) classroom activities for the children with home assignments; and 4) a web-based self-test of type-2 diabetes risk by parents, with follow-up in primary health care. The primary outcome is assessed as the difference between the intervention and the control group directly after the end of intervention at 6-months post baseline, and at follow-up 18 months post baseline, adjusted for baseline values. The outcome variables are the intake of unhealthy foods, unhealthy drinks, and healthy foods assessed by a newly developed method using photo-based dietary assessment. The secondary outcomes are physical activity and time spent sedentary measured by accelerometry, and measured BMI and waist circumference. Hypothetical mediator variables are parental self-efficacy and parenting practices regarding diet and physical activity assessed by questionnaire. Process evaluation will be performed through interviews and questionnaires to study how well the programme was implemented in terms of dose, fidelity, acceptability and feasibility. The programme is in line with the latest evidence regarding the prevention of childhood obesity: that schools should be a focal point of prevention efforts, interventions should involve multiple components, and include the home environment. If effective, it will fill a large knowledge gap concerning evidence-based health promotion practice within school health services to prevent overweight and obesity and in the long term reduce social inequalities in health.
Social networks, social capital, i.e., network-accessed resources, and neighbourhood environments have been shown associated with a range of health behaviours and conditions, including obesity, physical activity, nutrition, and mental health. Research on social capital and health in Montreal has shown the importance of network social capital for a person's subjective health status, sense of control, self-reported physical activity, and obesity. Research has also shown high social capital to reduce health service use, mental health service use, and improve the management of chronic illnesses. Despite advances in the understanding of social capital and its link to health and health service use, most research on social capital is cross sectional and is unable to identify the causal pathways linking social networks and capital to health and health care use. Longitudinal research would strengthen the evidence base for designing interventions to prevent or delay the use of health services, particularly in older adults. This research has three main objectives: (1) transform the original sample of Montreal Neighbourhood Networks and Healthy Aging (MoNNET-HA) households (n=2707) into a panel study, (2) link the MoNNET-HA participant data to their Quebec Health Insurance Registry (Régie de l'assurance maladie (RAMQ)) information, and (3) assess the feasibility of extending the MoNNET-HA panel by one wave to include participant's core network members. Unique about the original MoNNET-HA sample is that it purposefully oversampled older adults (> 64 years old) but remains representative of Montreal adults at various ages and income levels. In addition, MoNNET-HA data is integrated into a GIS database which allows researchers to examine the effects of neighbourhood environmental characteristics on health. By linking MoNNET-HA data to RAMQ, researchers will be able to examine patterns of diagnosed health conditions, (e.g., fractures, depression), pharmaceutical use and adherence, and formal health care use over time. Transforming the cross-sectional study into a panel study would also allow researchers to examine longitudinally the dynamics of health and health care utilization among Panel participants over the life course, and the causal pathways linking neighbourhoods and networks to health and health care use.
The study evaluates the timeline of changes of body composition, physical and psychological performance, and biochemical markers of metabolism and inflammation responses to low energy ketogenic diet for loosing weight in obese individuals. The participants will be monitored and guided by the interdisciplinary obesity team for 12 weeks.