Active clinical trials for "Obesity"

In this study, we will address cost barriers to participating in summer programs and hypothesize this will lead to marked improvements in children's obesogenic behaviors and a reduction in excessive, unhealthy weight gain over summer.

The PARENT Trial aims to determine if the Parents Together program consisting of parent workshops, home visits and coaching calls, will result in better health outcomes for children. The program which is facilitated by a Public Health Nurse seeks to encourage healthy lifestyle, help build strong family relationships, and promote child mental health.

The main objective of this research project is to assess the impact of the timing of exercise on sensory perception, more specifically on taste and smell. Also, the investigators want to identify the optimal exercise timing scenario that maximizes the short-term anorexigenic effect of exercise (i.e. decrease in energy intake at the meal following the exercise session) in each group of teenagers. Hypothesis: exercise immediately before a meal (EX->MEAL) will be the most efficient scenario, and will show a larger impact on males individuals and people who suffer obesity. Subsequently, the investigators want to understand the impacts of exercise on lifestyle habits (i.e. sleep and sedentariness). For the realization of this research project, the investigators plan to recruit approximately 144 participants, boys and girls with normal weight/obesity, aged 12 to 17 years. Of these participants, half will be male. There are two different exercise timings (i.e. performed at 9:30 am and 11:00 am using a treadmill to test the maximal aerobic capacity) and one sedentary control condition. Participants will take part in 3 experimental visits in a random order (~5 hours/visit at LAPS-UdeM + 24h of real-life monitoring). Appetite sensations, energy intake (i.e. total and macronutrient), activity monitoring using actigraphy, hormonal (i.e. anorexigenic and orexigenic) and chemosensory (i.e. cortical response to taste and smell stimulations) response will be monitored in the laboratory and/or remotely. This project will measure acute response in laboratory and real-life settings.

The purpose of this study is to assess the effects of a low energy, high protein tube feeding formula on body weight in tube fed patients who are obese. It will also assess study formula tolerance as well as impact of the study formula on lean body mass, blood pressure, blood sugar and lipids.

Strategies to reduce sugar-sweetened beverages (SSB) have become one of the leading public health targets to address the epidemics of obesity and diabetes. National food, nutrition, and health policies and programs have positioned low-fat milk as the preferred caloric replacement strategy for SSBs. This strategy derives from evidence that replacement of SSBs with low-fat milk is associated with reductions in weight and incident diabetes in prospective cohort studies and reduces liver fat (an important early metabolic lesion linking obesity to diabetes), as well as triglycerides and blood pressure in randomized trials. Whether these benefits hold for soy milk alternatives is unclear. There is an urgent need for studies to clarify the benefits of soy milk as an alternative to cow's milk. Our overarching aim is to produce high-quality clinical evidence that informs the use of soy as a "public health intervention" for addressing the dual epidemics of obesity and diabetes and overall metabolic health. To achieve this aim, we propose to conduct the Soy Treatment Evaluation for Metabolic health (STEM) trial, a large, pragmatic, randomized controlled trial to assess the effect of using 2% soy milk (soy protein vehicle) versus 2% cow's milk (casein and whey vehicle matched for protein and volume) as a "public health intervention" to replace SSBs on liver fat and key cardiometabolic mediators/indicators in an at risk population.

This study aims to determine how different types of exercise regimens (resistance, aerobic, or combined exercise regimens) can be used to minimize muscle loss and mobilize body fat in severely obese patients after bariatric surgery (BS), despite the rapid surgery-induced weight loss. Additionally, the study will examine how changes in the intestinal microbiota following BS act as a mediation factor that alter tissue-specific responses in muscle and adipose tissue. The study will also evaluate the effect of different types of exercise regimens on cardiometabolic markers, endocrine response, and physical function following BS. Sixty sedentary (regular exercise <1 hour per week) candidates to bariatric surgery at Herzliya Medical Center will be recruited to participate in this six-month-long randomized control study. Participants will be randomly assigned to either one of three exercise regimens intervention groups (aerobic, resistance, or a combined exercise regimen combining aerobic and resistance exercises) or a control group that will receive standard care. Training will be supervised and matched for metabolic equivalent (METs). The intervention will take place at the Sylvan Adams Sports Institute at Tel Aviv University and an online platform. All measurements will be taken at a presurgical baseline assessment and throughout the study, and will include changes of muscle mass and adipose tissue distribution, measured by a 3-Tesla magnetic resonance imaging (MRI); body composition- will be assessed using multichannel bioelectrical impedance (Seca); Bone mass, will be measured by a Dual-energy X-ray absorptiometry (DEXA); microbiota composition and changes will be evaluated by stool samples that will be subjected to 16S ribosomal ribonucleic acid (16s rRNA) profiling and metagenomics analysis; fasting blood samples will be used to examine endocrine control and cardiometabolic markers; anthropometric measurements to assess surgery results associations with physical activity outcomes and physical function will be assessed by several validated performance assessments, including handgrip, six-minute walk, sit-to-stand, maximum voluntary contraction, and maximal oxygen consumption (VO2max).

Interventions that promote water consumption in place of sugar-sweetened beverages have shown promise for preventing childhood obesity in schoolchildren. Yet to date, no studies have examined whether applying this approach in childcare centers could help to prevent childhood obesity at an even earlier stage of development. This cluster-randomized controlled trial will fill gaps by examining how a multilevel childcare-based healthy beverage intervention affects young children's consumption of beverages and obesity.

In South Africa the prevalence of obesity in women of reproductive age is high; these women also have a high risk for iron deficiency (ID). Obesity is associated with low-grade systemic inflammation, which was shown to increase the expression of hepcidin, leading to a reduction in duodenal iron absorption. Thus, alleviating the sub-clinical inflammation associated with obesity could improve iron absorption and status. Supplementation with n-3 long-chain polyunsaturated fatty acids (LCPUFA) has been shown to reduce inflammation in obese individuals. A stable iron isotope study will be performed to investigate the effect of n-3 LCPUFA supplementation on fractional iron absorption in obese South African women.

The goal of this clinical trial is to evaluate the effect of a time-restricted eating (TRE) regimen on hallmarks of aging, in comparison with traditional caloric restriction and an unrestricted diet in adults with overweight/obesity. Investigators aim to assess: If TRE is sustainable over 6-months. If TRE positively affects metabolism and body composition If TRE improves circadian rhythm/sleep. If TRE benefits cognitive function, mood and quality of life (QoL). If these beneficial effects are associated with changes in molecular hallmarks of aging. Participants will be randomly allocated to: an unrestricted Mediterranean diet group (MedD) a energy-reduced Mediterranean diet group (MedD_RC) or to an unrestricted Mediterranean diet with TRE group (MedD_TRE) Intervention will be maintained for 6 months, and there will be an additional 6-months period of follow-up to assess the maintenance of the intervention without supervision. Changes from baseline in phenotypic and molecular hallmarks of aging, including: chronobiology, quality of life, cognition, metabolism and epigenetics among groups over the follow-up will be analyzed.

The primary aim of this randomized clinical trial is to compare the effects of three different HIIT protocols and a control group on cardiometabolic health in young adults with obesity. Participants will be randomly assigned to one of the following three groups, with each having varying work-to-rest ratios: 1) HIIT-A, 2) HIIT-B, 3) HIIT-C, and 4) control group. HIIT-A, HIIT-B, and HIIT-C groups will participate in six sessions of a running based HIIT program over a 2-week training period. Pre-clinical markers of cardiovascular disease, blood lipids and fasting glucose will be measured at the following three time points: baseline, post-intervention, and 2 weeks after the training cessation (i.e., measure for detraining effect). All measurements will be performed three days before the training program and three days after the intervention to avoid the effect of the last training session. Afterwards, the detraining test will be measured 2 weeks post intervention.