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Browse 2,358 clinical trials for obesity. Find studies that match your criteria and connect with research centers.
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NCT01622114
Achievement and maintenance of weight loss in obese individuals has proven difficult. Many hypotheses have suggested potential biological mechanisms to explain why weight loss attempts often fail, and the surrounding obesogenic environment also seems an obvious candidate. Among the biological factors proposed is gender, and weight loss trials have frequently shown that females are less successful than males at losing weight and at maintaining weight loss. Women's weight is influenced by the menstrual cycle, in which changes in hormonal levels and interactions work to modulate fertility. These hormones control the menstrual cycle and coordinate the required changes in energy intake, expenditure, and storage, whilst preparing the body for pregnancy every month. As reproduction is a primary biological function, these hormones may be such strong mediators of eating behavior that they influence the outcome of a weight loss attempt. The menstrual cycle should therefore be taken into consideration as a factor in the physiology of energy balance in premenopausal women. The cycle can be divided into three phases: menstruation or early follicular phase (days 1-5), late follicular phase that lasts until ovulation (\~days 6-14, and the luteal phase (days 15-28). Studies have shown that in the luteal phase of the menstrual cycle, women's energy intake and energy expenditure are increased and women experience more frequent cravings for foods, particularly those high in carbohydrate and fat, than during the follicular phase. A trend towards reduced carbohydrate utilization and increased fat oxidation in the luteal phase has also been reported, together with prolonged time to exhaustion when exercising at submaximal intensities. This suggests that the potential of the underlying physiology related to each phase of the menstrual cycle may be worth considering as an element in strategies to optimize weight loss. In 2010 the investigators carried out a 90-day randomized, controlled pilot study in order to gain feedback on and assess acceptance of the meal and exercise plans being used and to observe if less control visits than planed in the main study were sufficient to achieve good compliance. Twenty eight were sreened and 24 were included. Subjects were randomized to either program A (given meal and exercise plans in relation to phases of their menstrual cycles) or Program B (a reduced calorie diet, calorie-matched to program A). The pilot study showed that Group A (The Menstralean group) tended to have a greater average weight loss at 60 days (-5.29 vs -3.57 kg, p = 0.06) and 90 days (-4.22 vs -2.75 kgs, p = 0.2) compared to the control groups. There was a dropout rate of 27%. This was primarily due to an inadequate number of control visits and contact with the subjects. Thus the Menstralean program seems to have the potential to enhance weight loss in overweight and obese women. However, the main study has to be carried out with more subjects in each group in a longer duration and with more support and contact with the subjects. The aim of the present trial is to examine the impact of the menstrual cycle on weight loss attempts in healthy overweight (BMI \> 27 kg/m2) premenopausal women (18-40 years) randomized to two different weight management programs for a period of 6 months.
NCT00005750
To conduct an integrated, multiple-component, school- and community-based intervention targeting both primary and secondary prevention of obesity among third-fourth-and fifth-graders ("School- and Family-Based Obesity Prevention for Children").
NCT00005752
To examine the effects of ethnicity, socioeconomic status (SES) and behavior in overweight adults.
NCT00005178
In the first study, to identify children at high and low risk for cardiovascular disease and study their nutritional and physical activity behaviors as they relate to cardiovascular disease. In the second study, to make yearly assessments over a four year period of diet and physical activity among children and their parents. The initial effort redefined and retested methods to collect data on dietary intake and activity levels of young children.
NCT02637752
Background: Childhood obesity imposes a great burden on the healthcare system. Given the increased frequency of dental compared to medical visits during childhood, dentists may be in an ideal position to recognize patients at risk of developing obesity. This randomized clinical trial explored the efficacy of a brief nutrition and physical activity counseling for healthy weight 6 to11 year-old children in a university-based pediatric dental clinic. Methods: 168 children, 6-11 year old, were allocated to test and control groups and their Body Mass index (BMI) were recorded. Their parents/caregivers completed a questionnaire regarding their child's nutrition, physical activity and screen time. The parents/caregivers of the test group then received a brief counseling session that encouraged an increase in children's physical activity, and a decrease in sugar-sweetened beverages and screen time. Data, collected at baseline and follow-up session (within 6-12 months) were analyzed using general linear regression, adjusting for age, gender, socio-demographic characteristics, education, labour force, income and awareness of school nutrition policy (P≤ 0.05).
NCT02636465
The purpose of this pilot study is to determine whether obese adults,obese (BMI\>30 kg/m2) with obesity hypoventilation or obese COPD-patients do undergo oxygen desaturation under flight simulation and if the hypoxic altitude simulation test is as effective as the hypoxic chamber test.
NCT01856647
Obesity is an insulin resistance-associated metabolic disorder which is a hallmark of and risk factor for type 2 diabetes and the metabolic syndrome, often linked to cardiovascular disease, certain cancers and inflammatory diseases.The phenotyping of subcutaneous adipose tissue (SAT) hematopoetic cells from obese subjects by flow cytometry, microscopy and gene expression will enable us to identify inflammation in this tissue and may help us to understand the causes and consequences of obesity in order to determine how these cells might be implicated in the initiation and/or progression of the aforementioned diseases.
NCT01920841
The purpose of this study is to evaluate efficacy of two lipolytic creams differing in their bases and demonstrate that their herbal ingredients can reduce the size of the thigh and smooth the appearance of the thigh skin. It is hypothesized that creams with two different cream bases containing herbal products that stimulate the lipolytic process through stimulation of the beta-adrenergic receptor, with one cream base applied to each thigh daily 5 days a week for 4 weeks will reduce thigh girth and smooth the thigh skin compared to baseline.
NCT00943969
The bariatric surgery is widely used to treat obesity. Roux-en-Y gastric bypass is one of the most frequently surgical methods performed and combines restrictive and malabsorptive procedures. Different data suggest that this surgery may modify drug absorption and we think it would be clinically relevant to describe the consequences of gastric bypass on drug systemic exposure in obese patients, since no data on the comparison between the pharmacokinetics (PK) of a drug before and after surgery are available and help to predict the drugs posology.The investigators decided to study the morphine because there is a lack of information about the PK, pharmacodynamics (PD) et pharmacogenetics (PG) of morphine in obese subjects, in contrary with anaesthetic drugs. This is a drug with a narrow therapeutic range frequently prescribed in obese patients.
NCT01475565
The polycystic ovary syndrome (PCOS) affects about 10% of reproductive-age women. Women with PCOS are at a higher risk of gestational diabetes, which may lead to more pregnancy complications. It is unknown if there are factors that may predict which women are more at risk. The goal of this study is to evaluate the risk factors of gestational diabetes, such as dietary and physical activity factors, race, and how the body handles its own hormones during pregnancy. Our long term goal is to contribute in finding ways to successfully prevent gestational diabetes.
NCT02626741
The purpose of this study is to determine whether meal replacement, SlimWell ®, is effective in the treatment of obesity patients with metabolic syndrome.
NCT01858233
The IBEP study is a randomized control trial of a healthy lifestyle intervention program for women with gestational diabetes. The primary aim of the study is to evaluate whether women with gestational diabetes enrolled in an intensive behavioral educational program (IBEP) demonstrate lower mean fasting glucose levels measured by 2 hour 75 gram oral glucose tolerance test (OGTT) at 6 weeks postpartum compared to women with gestational diabetes who undergo routine gestational diabetes education and counseling.
NCT00936130
The purpose of the study is to determine the effect of three weight loss surgeries compared to a low calorie diet with regard to energy expenditure, body composition, insulin sensitivity, and the response of gastrointestinal peptides to a standard meal. Baseline assessments will be conducted in all four groups and changes will be compared six and fifty-two weeks post-operatively.
NCT02618044
Laparoscopic Roux-en-Y Gastric Bypass (LRYGB) is considered the weight loss procedure of choice for patients suffering of gastro-esophageal reflux (GER). However, long term instrumental evaluations of GER after LRYGB are not available. The aim of this study is to evaluate the long-term effects of laparoscopic Roux-en-Y Gastric Bypass (LRYGB) on gastro-esophageal function.
NCT01460784
The investigators propose to conduct a cross-sectional study of 60 participants who are 18-30 years of age to undergo research PET/CT. The purpose of this study is to investigate the relationships between Brown Adipose Tissue (BAT), the adiponectin/leptin (A/L) ratio, and components of the metabolic syndrome in young adults.
NCT02619461
This study describes the effect of acute high intensity exercise at 70% VO2peak on inflammation, stress, appetite hormones and appetite in lean and obese children and adolescents.
NCT02295761
Objectives: Aim of this study is to evaluate the effectiveness of Facebook-delivered lifestyle counseling intervention on overweight and obese adolescent's physical activity, BMI and adherence to healthy lifestyles. Design: A 12-week, randomized controlled trial with three, 24 and 36 month follow-up. Settings: One of the Northern Finland healthcare districts school health care units. Participants: all overweight or obese 13-16 years old adolescent and their parents were invited to study. Methods: Adolescents were stratified by gender, age, and self-reported physical activity and they were randomized into three groups. Two experimental groups, where those both got Facebook-delivered lifestyle counseling and one of the experimental groups got activity monitor which showed the daily activity. One group served as a control group. Parents were allocated to intervention groups according which group their adolescent were randomized. Outcomes: physical activity,body mass index (BMI) adherence to healthy lifestyles. Baseline measurements have been done and assessment to adherence to healthy lifestyles have been measured. Follow-up measures have been conducted three months after baseline. Adherence to healthy lifestyles measurement follow-up is at 24 and 36 months after intervention.
NCT01652989
The PILI @ Work project is a 5 year randomized control trial to adapt a weight loss program for the employees of Native Hawaiian-serving organizations in Hawai'i. The study has two specific aims: Specific Aim 1: To adapt and implement a weight loss and weight loss maintenance program in Native Hawaiian-serving organizations, working with employee representatives to determine how the intervention can be best implemented with employees at the worksites. Specific Aim 2: Among employees participating in the program, to test whether weight loss maintenance program in DVD format is as effective as the weight loss maintenance program in a group face to face format in maintaining weight loss for employees who complete weight loss program. The investigators hypothesize that the PILI @ Work interventions can be effectively adapted and implemented in a worksite settings with active participation by employees and employers. The investigators also hypothesize that overweight (BMI ≥ 25) and obese (BMI ≥ 30) employees who complete weight loss portion of the intervention, and are randomized to received the weight loss maintenance intervention via DVD will have similar success at maintaining weight loss compared to those randomized to PILI Maintenance in group meetings or settings. The investigators hypothesize that will will also be true for physical functioning,blood pressure, daily self-weighing, low to moderate fat and low calorie diets, and daily physical activity.
NCT00999297
A 4 week intake of drug to find a natural substance that may modify energy balance and may enhance health in combination with lifestyle changes with possible decrease in body weight.
NCT02024425
The purpose this study is to evaluate the therapeutic effect of a functional bioactive supplement associated with a hypocaloric equilibrated diet to treat obese and overweight individuals. The functional bioactive supplement, containing antioxidant extracted from rosemary, oligosaccharides derived from lactulose and bioactive peptides, was developed to satiety control, improves of anti-inflammatory response and antioxidant defense mechanisms as well as to weight loss.
