View clinical trials related to Overweight.
Filter by:Obesity is a national epidemic with multiple causes and complex solutions. Research in both animals and humans has suggested that the inclusion of dairy foods into a moderate calorie restricted diet can increase weight loss and fat loss. Our proposed project extends these prior findings by determining, for the first time, how inclusion of dairy in a calorie-restricted diet changes the amount of visceral adiposity in overweight and obese subjects. The investigators also propose unique studies to evaluate the potential mechanism(s) by which dairy promotes weight and fat loss during dieting, through an examination of adipocyte size, gene expression, and inflammatory markers. The hypotheses under investigation are (1) that inclusion of dairy foods in a modest energy restricted diet will significantly increase body fat loss compared to a control diet; (2) that dairy products in a modest energy restricted diet will result in greater fat loss from intra-abdominal adipose tissue compared to the control, 3) components of dairy products up- or down-regulate the secretion of metabolically-relevant hormones during the postprandial and inter-meal periods, 4) dairy products will promote satiety and/or satiation, 5) dairy foods reduce adipocyte differentiation and/or enhance adipocyte apoptosis, leading to concomitant white adipose tissue (WAT) expression changes for genes playing a role in these processes, 6) dairy foods will reduce adipocyte lipid storage and enhance pathways associated with thermogenesis and mitochondrial function in WAT, as reflected in gene expression changes and reduced adipocyte size, and 7) dairy foods included in a modest energy restricted diet will decrease inflammation in WAT and other tissues, thus decreasing circulating cytokines, increasing zinc status, decreasing expression of inflammatory markers in WAT, and reducing WAT macrophage infiltration.
Increased access to highly reinforcing sedentary behaviors in the home such as TV and computers are associated with overweight in youth. Reducing these behaviors reduces overweight and prevents increases in overweight in youth who are at risk, likely by increasing physical activity and/or reducing energy intake. Reducing access to highly reinforcing sedentary activities frees-up time and youth must choose to reallocate their time between engaging in other, less reinforcing sedentary activities or physical activity. Neighborhood environments that provide easy access to reinforcing physical activities such as those at parks may result in greater increases in physical activity when access to highly reinforcing home sedentary behaviors is reduced. The investigators have found in 3 data sets of youth ranging in age from 4 to 16 years that the proportion of park and recreation area to residential area within ½ mile of the child's home parcel (park and recreation index) independently predicted the physical activity of youth. The investigators also found that increases in physical activity when access to sedentary behaviors were reduced for 3 weeks was related to park area within ½ mile of the child's home. The aim of this study is to decrease access to home sedentary behaviors for 4 months and determine if changes in physical activity habits are related to access to parks and recreation areas in the neighborhood environment. The investigators propose to study 128 sedentary overweight male and female 12-14 year-old youth recruited from parcels within Erie County, New York that have a high or low park and recreation index. Groups will be matched on racial/ethnic distribution and socioeconomic status. Subjects living at low and high park access parcels will then be equally randomized to groups that reduce targeted sedentary behavior (TV, computer use) time by 50% using TV Allowance devices placed on each TV/monitor in the home or a control group that has the same experimental experiences including TV Allowance devices placed on each TV/monitor, but programmed to not limit access to targeted sedentary behavior. Subjects will wear both accelerometers and wrist-watch-type global positioning systems to determine changes in the duration and intensity of physical activity in various parcel types, including parks. The investigators hypothesize differential responses in physical activity and the utilization of parks for physical activity. The group of youth that live at parcels with high access to parks and that incur a 50% reduction in sedentary behavior will have greater increases in physical activity, number of visits to parks and will accrue greater physical activity at parks than youth in the other 3 treatment groups. The investigators hypothesize that the alterations in physical activity will be mediated by parent modeling of physical activity and individual differences in the motivation to be physically active. The investigators hypothesize that there will be a main effect of reduction in access to sedentary behaviors on energy and fat intake and percent overweight.
Community based participatory research principles will be used to create, implement and evaluate a culturally relevant and age-appropriate obesity intervention for adolescents who are overweight or obese. The intervention will be implemented through school-based health centers (SBHC) and will include clinical encounters with SBHC providers, use of Motivational Enhancement Therapy to help overweight/obese adolescents adopt healthier behaviors, and use of a community advisory council to develop obesity risk reduction strategies that will be delivered by print and digital video disc (DVD) media. To test efficacy of the ACTION intervention, overweight/obese adolescents will be recruited to either the intervention condition or the usual care condition. Students will have pre- and post- intervention measurements to assess if adolescents in the intervention condition will have improved risk factor profile for metabolic syndrome, improved nutrition and increased physical activity when compared with students in the usual care condition.
The purpose of this study is to evaluate the PK properties of lorcaserin in obese or overweight elderly subjects.
Part 1) Bone health after transplantation - possible influence of vitamin K Part 2) Fat metabolism and endocrine parameters - possible predictors for developement of overweight after transplantation
The purpose of this study is to test the safety and effectiveness of a purified extract of CH-19 Sweet, containing capsinoids.
About 15 to 20 percent of individuals living in the United States have chronic abdominal pain, often of unknown origin, which is often difficult to diagnose and treat. One possible cause of chronic abdominal pain is an inflammation of the intestines, but it is not known whether the two are related. Furthermore, although overweight people tend to be more likely to have increased inflammation, it is not known whether there is a connection between increased body weight and chronic abdominal pain. This study will examine the relationship between symptoms of chronic abdominal pain and intestinal inflammation by comparing the medical test results of normal weight and overweight patients who have a history of chronic abdominal pain. This study will include 224 subjects, who must be men and women between the ages of 13 and 45. Half the subjects will be healthy participants, and half will have had chronic abdominal pain of unknown origin for longer than 6 months. Female participants must take a urine pregnancy test before starting the study, and will not be allowed to participate if the test is positive. During the study, patients will visit the NIH Clinical Center on two occasions for testing. On the first visit, patients will provide a medical history, including information about current medications or natural remedies and tobacco and alcohol use, and will also fill out questionnaires to provide information about symptoms, current levels of gastrointestinal pain, and general quality of life. The study researchers will conduct a physical examination, measure patients height and weight, and draw blood for testing. Patients will be asked to not eat or drink anything for 8 hours before the second visit, and will be asked to bring a bathing suit and a swim cap to the Clinical Center. On the day of the visit, patients will fill out questionnaires to provide information about symptoms, current levels of gastrointestinal pain, and general quality of life. Patients will also provide a blood sample for testing. Researchers will measure patients blood pressure and heart rate, height, weight, waist/hip circumference, and intra-abdominal measurement. Patients will also be asked to put on the bathing suit and swim cap to have their body fat measured using a machine called the BOD POD. To test the gastrointestinal system, patients will then be asked to drink a sugar-based test solution, and researchers will collect all voided urine for the next 5 to 6 hours. (Patients may drink water during this time.) On either Day 1 or Day 2 of the study, patients will sip, swish and spit an additional sweet taste solution. Patients will sip, swish, and spit different concentrations of this sweet taste solution, for a total of 25 tastings of this solution. Subjects will then complete questionnaires about their sweetness preferences related to these 25 tastings.
Definition: the overall objective is to examine childhood obesity with focus on NAFLD and its treatment. Further, we aimed to investigate the impact of genetic variation on obesity. The specific aims are to; - describe the degree of NAFLD among overweight and obese, Danish children. (hypothesis; the degree for pediatric NAFLD among Danish Children was equal that found in other Caucasian paediatric study populations). - investigate the effect of a multidisciplinary intervention treatment of 1 year on liver fat content. (hypothesis; the intervention could reduce the liver fat percentage and a reduction in BMI SDS would associate with a reduction in liver fat content) - Analyze changes in liver fat content in relation to changes in levels of fasting blood variables to see if any of them could be used as a clinical tool for monitoring hepatic steatosis in the clinic. (hypothesis; serum aminotransferases (separately and their ratio, respectively), serum insulin, and HOMA-IR could predict improvement in liver fat content - Investigate the association between genetic variants and obesity.
Objectives: to investigate for the potential effect of fenofibrate on symptoms and biological changes associated with sleep apnea syndrome.
The purpose of this study is to determine the role of 1. dietary calcium in fecal fat loss and the association between lactose maldigestion, dietary calcium level and source, and weight loss induced by caloric restriction. 2. caloric restriction on biomarkers of inflammation and oxidative stress