View clinical trials related to Body Weight.
Filter by:This study evaluates different versions of a text messaging-based app for weight loss. This study will place participants to 1 of 32 experimental conditions that reflect different texting components and levels. Participants will be randomized to a condition. The investigators will recruit 448 adults into a 6-month weight loss program, with an additional follow-up 6-months after the intervention ends.
This research study is a sub-study within the Behavioral Activation for Smoking Cessation and the Prevention of Post-Cessation Weight Gain main study (NCT02906787). Participants who are eligible for the main study and meet certain MRI (Magnetic Resonance Imaging) related study criteria (i.e. conditions) may also elect to complete a series of computer tasks inside a standard, closed MRI scanner to examine changes in brain activity associated with the smoking cessation counseling that participants will receive in the main study. In total, participants will be asked to complete 2, one-hour fMRI scans: 1 before completing their first counseling session and 1 during the final 7 days of the scheduled 8-week nicotine patch treatment period.
Dietary protein is a key element of most effective weight loss regimens. This study will investigate the effects of consuming soy protein on body composition and cardiometabolic health within the context of an effective weight loss and maintenance program called the Colorado Diet.
This study will evaluate the effects of a one week weight management summer camp on children's weight, quality of life, mood and feelings, self-esteem, weight management efficacy, enjoyment of physical activity, and body image.
INTRODUCTION: Accurate estimation of dry weight (DW) is an important and difficult problem in clinical practice. DW is defined as the lowest weight after hemodialysis (HD) where the patient will not develop symptoms of hypotension and edema, in addition to not using antihypertensives. Achieving a fluid balance benefits the control of blood pressure and reduces cardiovascular risk. In most HD centers, the DW is estimated using a subjective method dependent on the signs and symptoms that the patient presents. Recently, several approaches have been studied to develop a standardized DW evaluation technique. Among these, the analysis of electric bioimpedance vectors (BIVA) has been recognized as a simple and promising method with high reproducibility. OBJECTIVE: To use BIVA to improve dry weight estimation in patients with chronic renal failure undergoing hemodialysis. Methods: This is a non-randomized pre-test / post-test clinical trial, where the universe of patients comes from the hemodialysis unit of the General State Hospital of Sonora. Patients who have limb amputations, pacemakers, metal implants, who are under renal transplant protocol or who have a renal transplant, and presence of infectious foci will be restricted from participating. The diagnosis of DW in the patients will be performed for modification and follow-up. Fluid status will be evaluated using BIVA. Measurements will be made before and after HD in three consecutive weekly periods and one one final assessment at three months. At the beginning of each period, weight, electrolytes, creatinine, total proteins, albumin, pre-albumin, urea and blood pressure will be measured to calculate the Malnutrition Inflammation Score and Bilbrey Index. At the end of the HD protocol of each period, body composition and muscle strength will be evaluated through triceps skinfold, mid-upper arm circumference and dynamometry. The dialysis dose received will be modified according to BIVA. The main variables to be considered will be DW, extracellular water and blood pressure. The duration of the study will be approximately 6 months. In addition, at the end of each measurement, each participant will be given a nutritional recommendation (feeding guide) specific to their energy requirements.
Recently, various sodium glucose cotransporter 2 (SGLT2) inhibitors have been approved for the treatment of type 2 diabetes mellitus. Empagliflozin is a preparation of this class of substances. SGLT2 inhibitors also lead to a reduction in body weight in addition to their blood glucose lowering effect. The basis for this is probably the calorie loss by the increased glucose excretion over the urine. However, this weight-reducing effect is lost after a few weeks of treatment and the body weight subsequently stabilizes at a lower level than before. However, patients continue to lose energy via the urine. Hence, the weight stabilization could be due to an increased energy intake as a possible consequence of a changed brain setpoint for the body weight. As the main weight loss is achieved during the first 6-8 weeks of treatment, the investigators assume that the underlying central nervous mechanisms will be present after this time. Furthermore, clinical-experimental observations show that treatment with empagliflozin promotes endogenous glucose production in the liver. This presumably compensatory mechanism also occurs after only a few weeks of treatment. The common mechanism, which could be based both on energy intake and on the endogenous glucose production effect, is still unclear. The investigators suspect that regulatory circuits in the brain contribute to these observed effects. In fact, several studies in animals as well as initial clinical studies in humans show that the brain is involved in eating behavior and peripheral metabolism. In particular, effects of the hormone insulin modulate the dietary intake via the brain, thereby affecting human body weight. Many of the experiments on the insulin sensitivity of the human brain used a specific approach to the selective delivery of insulin into the brain: the application of insulin as a nasal spray. Although this application route has no therapeutic value, this technique allows the administration of insulin to the central nervous system with little effect on the circulating insulin levels. By combining nasal insulin administration with functional MRI, regional insulin sensitivity of the brain can be quantified. The investigators recently found that the insulin action of the brain (stimulated by nasal insulin) regulates both endogenous glucose production and peripheral glucose uptake during hyperinsulinemic euglycemic glucose clamps. The signals from the brain seem to reach the periphery via the autonomic nervous system in order to modulate metabolic processes. A central brain area in this regard is the hypothalamus. This brain region receives afferents over various systems such as the autonomic nervous system and various endocrine systems (including insulin). The investigators recently characterized the hypothalamus as an insulin-sensitive brain area in humans. The hypothalamus is the key area for homeostatic control throughout the body. Since the dietary intake and the endogenous glucose production are modulated by a hypothalamic insulin effect in humans, we suspect that the observed effects of SGLT2 inhibitors on both processes could be due to altered insulin activity in the brain. Since the SGLT2 inhibition by empagliflozin modulates the autonomic nervous system in the kidneys, signals from the kidney may be transmitted to the brain via the autonomic nervous system, thereby changing specific setpoints, including e.g. insulin sensitivity of the brain. In order to test this hypothesis, a precise phenotyping of prediabetic volunteers with regard to regional brain insulin sensitivity as well as the brain effect on metabolism before and after 8 weeks of treatment with empagliflozin compared to placebo is planned.
To evaluate the efficacy of Litramine in reducing body weight in the context of an energy-restricted diet in overweight and moderately obese subjects
Title: Effect of body weight loading on urinary electrolyte excretion Swedish Title: Effekt av belastning på utsöndring av elektrolyter Study period: Q2-Q3 2017 Study site: The study will be performed at the Institution for Neurology and Physiology, Sahlgrenska Academy, University of Gothenburg. Principal Investigator is John-Olov Jansson, MD, PhD, Professor at Institute of Neuroscience and Physiology, University of Gothenburg Background and study design: Weight reduction can be obtained by decreased appetite or increased metabolism. However, acute weight loss can also be obtained by loss of fluids - for example by increased urinary loss of fluid and salts, so called elctrolytes. Preliminary results from a laboratory lesson for the Master of Science in Medicine program at University of Gothenburg suggest that carrying a 10 kg weight vest could increase urinary excretion of Na+, K+ and Cl-. The purpose of this study is to investigate this further in a more controlled research setting. If confirmed, the results could potentially contribute to the development of potent diuretics or obesity medicines. The study will include 15 healthy volunteers and consist of three study days with about one week between each study day. The study subjects will go through a different study procedure each study day, and a randomized cross-over study design will be used to determine which procedure each day. Procedure 1: Wearing a weight vest with 10 % of body weight standing for seven hours. The study subject is allowed to sit for 10 minutes each hour. The reason for this is that it has been considered that the effect may be transmitted by weight loading of the lower extremities. Procedure 2: Wearing a weight vest with 1 % of body weight standing for seven hours, as a control for procedure 1, with lower loading. The study subject is allowed to sit for 10 minutes each hour. Procedure 3: Wearing a weight vest with 1 % of body weight sitting for seven hours. This is a procedure with even less loading of the lower extremities than during procedure 2. Urine- and blood samples, as well as heart rate and blood pressure measurements, will be collected during the study days and analyzed in order to address the primary and secondary objectives of the study.
Lack of physical activity is one of the major causes for obesity and functional disability in the elderly. Including regular exercise in elderly´s lifestyle is not an easy task. The main objective was to analyse the effect of a motivational resistance-training programme on satisfying the individual´s psychological needs, level of self-determination and body composition. A quasi-experimental study was performed with 47 volunteers (29 females, 18 males) of 67-75 years of age, divided into two groups: experimental (n = 27) and control (n = 20). A 12-week intervention programme was performed, with a total of 36 sessions.
The aim of this pilot study is to conduct a dietary intervention for overweight (body maas index BMI≥25) and obese (BMI≥30) pregnant women in two maternity care clinics and explore the effect of the intervention on gestational weight gain and the prevalence of gestational diabetes between the intervention and control groups.