View clinical trials related to Overweight and Obesity.
Filter by:This study will systematically investigate the effects of a diet with decreased energy density, reduced glycaemic index, and significantly increased dietary fibre, on post-prandial glycaemic response, satiety, gastrointestinal tolerability and gut microbiota composition and function in individuals with excess body weight (Body Mass Index (BMI) 25-35kg/m2). Hypothesis: The investigators hypothesise that a diet enriched in fibre will be beneficial to post-prandial glycaemic response, well tolerated and satiating, as compared to the standard Western-style diet.
The effect of calorie restriction combined with low or moderate carbohydrate availability on exercise capacity, metabolism and metabolic health indicators will be measured in a randomized parallel group design. Forty overweight (BMI 25-30) and relatively inactive women (20-35 of age) will be included. These will be randomized into one of two experimental groups both receiving a calorie-restricted diet (-1000 kcal) combined with either low carbohydrate availability or moderate carbohydrate availability across a 10 day period. Laboratory-based physical capacity tests and blood and muscle sampling will be performed before and after the intervention. In addition, an additional follow-up test day will be performed after continuing the diet for another 48 h and then standardizing the pre-testing carbohydrate availability before repeating the tests of physical capacity.
The goal of this clinical trial is to understand how the blood sugar-lowering hormone insulin works in healthy adults versus those who are at risk for type 2 diabetes. The study will use a drug called alpelisib, which interferes with insulin's actions in the body, to answer the study's main question: does the liver continue to respond to insulin's stimulation of fat production even when it loses the ability to stop making glucose (sugar) in response to insulin. Researchers will compare the impact of single doses of both alpelisib and placebo (inert non-drug) in random order (like flipping a coin) in study participants. Participants will be asked to stay twice overnight in the hospital, take single doses of alpelisib and placebo (one or the other on each of the two hospital stays), and receive intravenous (into the vein) infusions of non-radioactive "tracer" molecules that allow researchers to measure the production of glucose (sugar) and fats by the liver. Measurements will be done both overnight, while participants are asleep and fasting (not eating or drinking other than water) and while consuming a standardized diet of nutritional beverages during the following day. The objective is to evaluate the effect of lowering insulin levels, while maintaining constant mild hyperglycemia, on plasma glucose and lipid levels.
The aging population is rapidly increasing, and it is important to identify dietary factors that can prevent disease and promote health in this group. Legumes, such as peanuts, are a plant-based food high in protein and unsaturated fat making this a healthy choice, but are not consumed frequently enough in older adults. Studies have shown that regular nut consumption is associated with lower adiposity and reduced weight gain and inflammation. Given these findings, this study will examine the postprandial effects of meals with 2 levels of saturated fatty acids (SFA) on metabolic endotoxemia, inflammation and satiety, using a randomized cross-over design. The low SFA meal includes peanuts that are high in monounsaturated fatty acids (MUFA) and this will be compared to a high SFA meal. The results of this study have the potential to provide valuable insights into the role of peanuts in promoting health and preventing disease in at-risk older adults.
The objective of the proposed research is to determine the effects of fresh watermelon consumption on physiological indicators of wellness regarding sexual, skin and gut health in adults.
Foods that release glucose rapidly, leading to spikes in blood sugar and insulin (known as high glycemic index foods), generate lower satiety responses than foods with low glycemic index. High glycemic index foods are also linked to an increased risk of developing diabetes. The partial replacement of carbohydrates in rich staple foods with soy flour has the potential to reduce glycemic response and improve satiety. In many regions of Latin America, as well as in the Middle East and North Africa (MENA) regions, bread is the staple source of calories, but it is a relatively poor source of balanced nutrition. Bread enriched with soy flour could provide higher dietary protein while moderating blood glucose (and insulin) spikes, which can help reduce insulin resistance and metabolic diseases. The results of this study could provide government and private human nutritionists with the evidence they need to formulate soy flour into bread, corn tortillas, and arepas for schools and homes.
Most of the existing lifestyle interventions in adults with overweight or obesity focus on one movement behavior in isolation (i.e. moderate to vigorous physical activity (MVPA)). However, recent research suggests to incorporate all movement behaviors performed in one day to explore the possible synergistic health effects of targeting more than one behavior. Moreover, more optimal 24-hour movement behavior compositions are related with better cardiometabolic health. Literature shows that adults with obesity have less optimal 24-hour compositions (8-9). Therefore it would be of interest to discover the needs related to an optimal 24-hour movement behavior intervention for a group of adults with overweight and obesity using co-design to develop an intervention. This study will conduct a concept mapping protocol to explore the needs to of people with overweight and obesity to change their sedentary behavior into more physical activity as well to include the opinion of health care providers (HCP are physiotherapists) on the needs of their patients.
The global obesity epidemic is well established, and is an important public health issue. The previous researches had applied the clues that obesity is a kind of systemic disease. The investigators hypothesized that a serious alteration of the body systems will occur after bariatric surgery, which may shed light on the mechanisms of obesity. Thus, the research aims to combine the imaging and surgery to investigate the alterations of the body that induced by obese and alterations after surgery.
The goal of this clinical trial is to evaluate the effect of freeze-dried blueberry powder on the gut microbiome in overweight and obese adults. The main question[s] it aims to answer are: - Does the supplementation of freeze-dried blueberry powder reduce the risk of obesity or lower the weight of people with a high BMI? - Does freeze-dried blueberry powder alter the gut microbiome function? Participants will; - Mix one sachet of Study Product (freeze-dried blueberry powder/placebo) into breakfast/dessert/yoghurt daily for 56 days during the intervention phase. - Partake in 4 site visits over the 14-week period, including an initial screening visit and a follow-up visit after the intervention phase. Researchers will compare the effect of freeze-dried blueberry powder with a placebo in a population comprising overweight and obese adults to see if the gut microbiome is altered and if there is a change in body composition.
The overall objective of this research is to determine the digestive faith and health impact of protein and fiber rich foods in different food matrices in type 2 diabetes risk population. This is achieved by controlled postprandial intervention where plasma amino acids, lipids, glucose metabolism, bile acids and microbial metabolites are evaluated as well as fecal microbiota and metabolites.