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Obesity clinical trials

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NCT ID: NCT03434665 Not yet recruiting - Obesity Clinical Trials

Transradial Selective Catheterization of the Celiac Artery in Obese Patients

Start date: February 15, 2018
Phase: N/A
Study type: Interventional

BACKGROUND: - Obesity, with its associated comorbidities, is set to become a major risk factor for cardiovascular disease in the 21st century. To this day, diet and medical therapy have proven only limited efficacy and bariatric surgery remains the last resort for many severely obese patients who wish to lose weight, modify their cardiovascular risk factors and ultimately modify their long-term prognosis. However, bariatric surgery remains associated with significant procedural morbidity and many patients are not eligible for such a surgery procedure as the risk-benefit ratio of bariatric surgery in severe obese patients with coronary artery disease is not yet well known. - Recently, percutaneous left gastric artery embolization has been reported as a promising technique leading to a body weight loss that is equivalent to bariatric surgery. - In the context of an endovascular procedure in obese patients, vascular access is a major concern. Transradial access (or radial artery approach) has been consistently associated with significant reductions in access-site related vascular complications and peri-procedural bleeding compared to the standard transfemoral access (or femoral artery approach). This is particularly evident in patients with severe obesity. - Visceral arteries most often have an acute angulation with the aorta which makes them more easily cannulated from above (transradial access) compared to below (transfemoral access). Preliminary experience has shown that cannulation of the celiac artery is feasible from transfemoral and transradial access, the latter being associated with shorter procedural time and less contrast agent use. To date, several pilot studies have reported successful percutaneous embolization of the left gastric artery with biodegradable microspheres. This appears to be a promising technique to reduce weight in severely obese patients. - Prior to launching a randomized trial, further study is warranted regarding the feasibility and safety aspects of transradial angiography of the celiac artery.

NCT ID: NCT03434431 Completed - Obesity Clinical Trials

Can Reverse Dieting Prevent Weight Regain After Weight Loss

Start date: July 17, 2016
Phase: N/A
Study type: Observational

Introduction: It is known that weight loss results in decreased Resting Energy Expenditure (REE), due to a decrease in lean body mass (LBM), but also due to metabolic adaptation, resulting in a higher energy efficiency, responsible for weight regain. Powerlifting athletes submit themselves to caloric restriction before a competition to reach their desired weight category. After cessation of the restrictive diet body mass will quickly return to pre-diet values with a disproportionate gain of fat mass. To avoid fat gain 'reversed dieting' has become popular among athletes. This involves increasing caloric intake in a stepwise fashion with the assumption that the small increases in caloric intake might help to restore energy expenditure toward pre-dieting levels and decrease the chance of increasing fat mass. While anecdotal reports of successful reverse dieting are available, research is needed to evaluate its true efficacy. In addition, if the method would work in non-athletes this could be an important change in the risk of weight regain after a weight loss diet. . Aim: To test the effects of the reverse dieting protocol in the prevention of metabolic adaptation following a period of caloric restriction in weight training athletes. . Methods: A convenience sample of 3 powerlifters is used in this study. They are submitted to a 750kcal/day caloric deficit with a protein intake set at 2x bodyweight (kg) and 30%en from fat for 6 weeks, adjusted weekly. The reverse dieting protocol adds 100kcal during week 1-4 and 150kcal during week 5-8. REE is measured bi-weekly and body composition at day 1 of caloric restriction and day 1 and day 56 of reverse dieting. Exercise is kept constant during the entire period. .

NCT ID: NCT03433690 Completed - Child Obesity Clinical Trials

The Effect of HIIT in Handling Obesity in Children

Start date: July 28, 2015
Phase: N/A
Study type: Interventional

In this study the investigators wish to investigate whether a short duration High-intensity Interval Training(HIT) is superior to a moderate activity training modus with regards to improving weight-loss, Blood pressure and sleep quality in severely obese children and adolescents also receiving a multidisciplinary treatment regime.

NCT ID: NCT03433456 Not yet recruiting - Obesity Clinical Trials

Healthy Homes, Healthy Habits

Start date: June 2018
Phase: N/A
Study type: Interventional

The purpose of this study is to evaluate whether an intervention targeting healthy habit development reduces the risk and prevalence of obesity in low-income mothers and children. The study intends to evaluate whether the intervention, delivered in the context of home visitation services for low-income families, reduces weight gain and risk factors associated with parent and childhood obesity compared to those receiving standard home visitation services.

NCT ID: NCT03432715 Recruiting - Obesity, Childhood Clinical Trials

Wellness Champions for Change

Start date: May 26, 2017
Phase: N/A
Study type: Interventional

The Wellness Champions for Change (WCC) study aims to reduce pediatric obesity among students who attend schools in Maryland by training teacher and student-led wellness teams to increase opportunities for physical activity and healthy eating at school. The study uses a cluster randomized design to allocate 6 schools (3 elementary, 3 middle) in 5 school systems to one of 3 arms: "A" (teacher and student training), "B" (teacher training only), and "C") (delayed teacher training/control). Approximately 36 3rd/6th graders and their caregivers ("evaluation cohort"), 15 4th/7th graders ("student leaders"), and 20 teachers from each school will be recruited in the spring before the intervention. All schools will identify a teacher "Wellness Champion" who will coordinate intervention activities. In "A" and "B" schools, wellness champions will attend a training to learn how to build a wellness team and create more opportunities for students to make healthy choices. In "A" schools, student leaders ("Student Wellness Champions") will meet weekly during lunch with a health educator to receive training as peer leaders and help the Wellness Champion with wellness initiatives. Student leaders in "B" and "C" schools will receive a monthly general Adolescent Health Curriculum. To assess the impact of the teacher and student-led interventions, the evaluation cohort will be followed for 2.5 years, with measures including: anthropometry (height/weight), 7-day accelerometry (physical activity), and validated questionnaires to assess healthy eating. Student leaders will be followed for 1.5 years to assess the impact of their participation, with measures including: anthropometry, 7-day accelerometry, validated questionnaires to assess healthy eating, and validated questionnaires and focus groups to assess leadership/advocacy skills. Teachers will complete validated questionnaires to investigate their perceptions of the school environment, classroom practices, and role modeling skills. Prior to data collection and analysis, participants will be assigned an identification number, and all documents linking participant information to identification numbers will be locked/ password-protected.

NCT ID: NCT03431831 Recruiting - Obesity Clinical Trials

Assessment of and Treatment Applied to Food Addiction in a Rural Healthy Behaviors Clinic

Start date: July 1, 2017
Phase: Phase 4
Study type: Interventional

Research purpose: The purpose of this pilot study is to assess obese clients for two phenotypes, those testing positive and those testing negative for Food Addiction (FA) (Yale Food Addiction Scale, YFAS) and determining the efficacy of four treatments: usual care (IC, dietary and physical activity instruction), individual motivational interviewing alone (MI), individual MI with pharmacotherapy (MI+P) for improving outcome measures within each phenotype, and pharmacological therapy (P). Background/significance: Obesity has long been an epidemic in the U.S. and other countries. Numerous approaches have been tried to address obesity with limited success. The YFAS is a relatively new, validated instrument that can help researchers and practitioners assess obese clients for food addiction. Meeting the YFAS diagnosis criteria for FA suggests the need for a stronger intervention with close monitoring to assist these clients in self-management of their eating and physical activity behaviors. Proposed methods/approach: The investigators propose assessing obese clients with the YFAS as part of their intake once they are referred to the Healthy Behaviors Clinic by Regional West physicians/practitioners. A nurse researcher with expertise in MI and a nurse practitioner will perform intake assessments, obtain consent and randomly assign participants in each phenotype (positive or negative for FA) to one of three treatment groups (usual care, individual MI alone, and individual MI with pharmacotherapy). Interventions will occur over 6 months. A clinical psychologist with expertise in the YFAS (University of Michigan) will serve as a consultant on this project and a registered dietitian (University of NebraskaLincoln) will serve as a co-investigator. Expected outcomes: The investigators expect that MI and MI+P and P will be more effective in improving outcome measures than IC. We also expect that response to the treatments will differ between the two obesity phenotypes (those testing positive and those testing negative for FA).

NCT ID: NCT03430154 Enrolling by invitation - Clinical trials for Haemophilia A, Haemophilia B, Obesity

Awareness, Care, and Treatment In Obesity Management of Patients With Hemophilia (ACTION) to Inform Hemophilia Obesity Patient Empowerment (HOPE)

Start date: December 1, 2017
Phase: N/A
Study type: Observational

An online web-based cross-sectional survey in which participants will complete a distinct questionnaire for patients with hemophilia and obesity (PwHO) and/or their carers/spouses/partners, or a distinct questionnaire for healthcare professionals. Each questionnaire consists of more than 100 items including pre-coded (multiple choice) closed-ended questions, yes/no questions and rating scales. It is estimated that this one-off survey will take approximately 45-60 minutes to complete. As a cross-sectional study, there will be no treatment of patients.

NCT ID: NCT03430115 Not yet recruiting - Obesity Clinical Trials

Health Outcomes After Participating in Exercise (HOPE)

Start date: February 19, 2018
Phase: N/A
Study type: Observational

Aging is associated with significant declines in muscle mass, strength, and physical performance, all of which lead to disability, loss of independence, and adverse clinical outcomes. Obesity exacerbates these age-related declines in function and is associated with poorer clinical outcomes and quality of life. Weight loss can also worsen age-related loss of muscle mass and decrease bone mineral density. The overall goals of this study are to determine if the short-term functional benefits of intentional weight loss are sustained long-term, and to examine the long-term benefits and risks of weight loss.

NCT ID: NCT03428386 Recruiting - Morbid Obesity Clinical Trials

Single-Anastomosis Plication Ileal Bypass for Morbid Obesity

Start date: February 1, 2018
Phase: N/A
Study type: Interventional

The present study aims to explore the impact of combining laparoscopic greater curvature plication with a single gastro-ileal anastomosis in the same manner of single anastomosis sleeve ileal bypass on weight loss and postoperative complications. The objective of this combined procedure is to reduce the high intraluminal pressure that results after laparoscopic greater curvature plication owing to reduced intraluminal space which can lead to suture line leakage, vomiting, and gastroesophageal reflux disease. Another objective is to add a malabsorptive element to the restrictive effect of laparoscopic greater curvature plication and to induce early satiety in patients by distention of the distal bowel with nutrients immediately after meals, similar to the way that single anastomosis sleeve ileal bypass works.

NCT ID: NCT03428256 Not yet recruiting - Obesity Clinical Trials

Pre-oxygenation Methods in Bariatric Patients

Start date: March 2018
Phase: N/A
Study type: Interventional

General anaesthesia involves giving patients anaesthetic and muscle relaxant medications to allow transition to sleep and airway relaxation to permit laryngoscopy, respectively. During laryngoscopy, a breathing tube is placed to 'secure' the airway. There is therefore a length of time from administration of these medications to when the breathing tube is placed, when the patient is not breathing and the airway is not secured. This time is known as apnoea time. In a patient who is not breathing, blood oxygen levels fall to dangerously-low levels, within 1-2 minutes. In order to prevent this, patients breathe 100% oxygen before induction of anaesthesia as part of a process known as pre-oxygenation. There are different ways of delivering pre-oxygenation, but the common aim is to increase the oxygen reservoir within the lungs to give the anaesthetist more time to place the breathing tube. With good pre-oxygenation, apnoea times of up to 7 minutes are possible. Apnoea time is a potentially hazardous period during induction of anaesthesia and it is particularly so in patients with severe obesity. On the one hand, obesity makes the upper airway anatomy difficult, and on the other hand, lung collapse (atelectasis) caused by abdominal contents compressing the base of the lungs reduces the amount of oxygen available within the lungs. Apnoea time can be as short of 30 seconds. Identifying the most effective method of pre-oxygenating bariatric patients can therefore significantly improve the safety of delivering general anaesthesia to these patients. The purpose of the study is to compare effectiveness of different methods of achieving pre-oxygenation in bariatric patients. The investigators intend to compare facemask pre-oxygenation with a high-flow humidified nasal oxygen. The primary outcome measure of interest is time to desaturation to 92% or 18 minutes of apnoea.