View clinical trials related to Obesity.
Filter by:The primary objective of this study is to assess efficacy of intragastric balloon for weight loss in obese patients who also concurrently have NASH.
The study aims to measure the effect of intragastric balloon on gastric function, particularly gastric accommodation and pace making, and the possible underlying changes in autonomic function
The purpose of the study is to determine the effect of intranasal OXT caloric intake and eating behaviors in otherwise healthy obese adolescents. The primary objective of this study is to determine the effects of intranasal administration of oxytocin on food intake in obese, pubertal or post-pubertal adolescents (13 to <18 years in girls, and 15 to <20 years in boys).
The purpose of this study is to determine if a weight loss app (VA MOVE!® Coach App) along with regularly scheduled telephone counseling, will motivate obese people with metabolic syndrome to lose weight and improve the symptoms of the metabolic syndrome, compared to usual weight loss approaches. This study will randomly assign participants to one of two groups, interventional or control. The interventional group will use the app with phone coaching and standard of care for weight loss. The control group will receive standard weight loss care without the app and phone coaching. Weight loss motivation to adopt life-style changes to maintain weight loss and quality of life between the two groups will be compared. The metabolic syndrome (MetS) is a cluster of disorders including high blood pressure, pre-diabetes, the tendency to carry body weight around the waist, and increased fat in the blood. When these problems happen together, there is an increased risk for heart attack, stroke, diabetes and certain cancers. Although the metabolic syndrome is a serious condition, it can be treated with diet, weight loss and increased activity. It can even be reversed using these lifestyle changes. Due to poor success with routine short-term weight loss treatment (group and one-on-one counseling), it is time to address the problem by a different method. Studies have shown feedback devices and weight loss apps have been successful in weight loss and weight maintenance. They are economical (many apps are free), and convenient to use, without attendance at group sessions. Since weight loss is the corner stone for improvement in the symptoms of the MetS, this study will offer a unique approach to support individuals who are committed to losing weight and adopting a healthier lifestyle. Numerous studies demonstrated that feedback via text messaging, and interaction through social networking support groups, in addition to iPhone apps, are all more effective in weight loss measures than group sessions at a hospital site. (Duncan et al., 2011; Greene, Sacks, Piniewski, Kil, & Hahn, 2012; Shaw et al., 2013; Spring et al., 2013). The benefit of these various methods is that they appear to accelerate weight loss and prevent weight re-gain if employed long-term. With technology changing daily, these approaches must be considered an essential adjunct to, or replacement for, traditional group counselling sessions.
The enteroendocrine system is composed from different cells along the different parts of the gastrointestinal tract, secreting diverse hormones and bariatric surgery alters intestinal hormone secretion, affecting glycemic control and weight. The aim of the study is to characterize the composition and secretory profile of enteroendocrine cells in the obese, non-obese and non-obese post bariatric surgery.
Overall aim: To demonstrate that weight loss through vBloc Therapy in combination with usual care will achieve better glycemic control for patients with obesity and type 2 diabetes than usual care alone. Duration: Participants will be asked to participate in a 12 month study that involves a baseline visit and research follow-up visits at 3, 6, 9, and 12 months. Sample Size: 60 participants will be enrolled in the study. Of these, 30 will be randomized to vBloc therapy and 30 will be randomized to usual care.
The study aims to characterize mitochondrial metabolism in the liver of obesity surgery patients and to study its relationships with hepatic steatosis, inflammation, and fibrosis.
Cesarean deliveries are the most commonly performed surgery in the United States and account for 32.9% of all births.8,9 The ASA recommends the use of neuraxial opioids of post-cesarean analgesia partly because respiratory depression in the obstetric population, as measured by intermittent respiratory rate and pulse oximetry, is reported to be low (0-1.2%).10,11 Respiratory depression lacks a standard definition,12 but the most sensitive means of detecting respiratory depression is hypercapnia.1,3 Two recent studies using continuous hypercapnia (>50mmHg PaCO2) monitoring demonstrated higher rates of respiratory depression (17.8-37%) in healthy, non-obese women receiving intrathecal opioids for post-cesarean analgesia.13,14 In addition, supplemental opioids are required in the majority of women receiving intrathecal morphine and may increase the risk of respiratory depression.11,14 Anesthesiologists debate whether neuraxial opioids or intravenous patient controlled opioid analgesia (PCA) are the safest practice for postoperative analgesia in obese parturients following cesarean delivery. The ASA recommendations to employ neuraxial analgesia post-cesarean delivery does not differentiate between non-obese and obese women who now make up 30.3% in US women of child-bearing age.2 Obesity has been described as a risk factor for respiratory depression in those receiving opioids via any route of opioid administration,11,15, 17 but whether obesity itself is the risk factor or associated co-morbidities such as sleep apnea is debated. Studies are conflicting whether intrathecal opioids or patient controlled intravenous opioids cause more respiratory depression. Several studies have documented the incidence of respiratory depression with IV PCA; the rates range from 0.19% to 5.2%, which are equivalent or higher than those reported for intrathecal opioids. (Hagle 16). Dalchow et al. demonstrated higher rates of hypercapnia in patients receiving intrathecal opioid compared with those receiving intravenous opioid via patient controlled analgesia in nonobese women following cesarean delivery. (Dalchow) The Topological Oscillation Search with Kinematical Analysis (TOSCA) monitor allows a noninvasive method to measure transcutaneous carbon dioxide levels, with relative accuracy compared to arterial carbon dioxide monitoring.4-7 No studies have examined transcutaneous carbon dioxide levels in obese women following cesarean delivery using any form of postoperative analgesia. The investigators propose a randomized controlled trial using continuous transcutaneous carbon dioxide monitoring to evaluate the degree of respiratory depression in obese women receiving neuraxial opioid compared to intravenous opioid via PCA for post-cesarean analgesia. Two studies have demonstrated high rates of hypercapnia in non-obese women following administration of intrathecal morphine for cesarean delivery in the postpartum period. (Dalchow, Bauchat) Dalchow et al. demonstrated higher rates of hypercapnia in women receiving intrathecal diamorphine than intravenous morphine delivered via patient controlled analgesia. It is unclear whether intrathecal morphine causes more or less respiratory depression than intravenous opioid delivered via patient-controlled analgesia in obese women. This study will add to the understanding of respiratory function in the immediate postpartum period in obese women using opioids via intrathecal or intravenous routes. This study will better inform guidelines for the postpartum analgesic route of choice in the obese obstetric population and allow the investigators to make recommendations for the detection and prevention of respiratory depression after opioid administration in the obstetric population. Objective is to examine the transcutaneous carbon dioxide levels in obese women using either intrathecal morphine or intravenous patient-controlled hydromorphone for post-cesarean analgesia. The hypothesis is carbon dioxide levels will be significantly higher in obese women receiving intrathecal morphine versus obese women receiving intravenous patient controlled intravenous hydromorphone.
The study investigates the effects of high intensity interval training (HIIT) versus continuous training (CT), combined or not with fasting, on capillary density, microvascular function, cardiometabolic risk markers, functional capacity, and quality of life, in overweight or obese sedentary women with cardiometabolic risk factors. The use of HIIT could promote greater improvements in these parameters than CT. Furthermore, the positive effects of exercise may increase when it is performed in the fasting state, compared to exercise performed in the fed state.
This study evaluates the effect of the "hunger hormone" ghrelin on human decision-making. Participants will be given an injection of ghrelin or saline on different study days and will then be asked to make a series of computer-based decisions. The investigators hypothesize that ghrelin will increase participant's preference for energy-dense foods and will also increase impulsiveness in decision making.