View clinical trials related to Obesity Prevention.
Filter by:The objectives of this trial are to assess the health benefits of acute hemp protein consumption compared to soybean protein and a non-protein control on: 1) blood glucose, appetite and blood pressure for one hour following consumption, 2) food intake at an ad libitum meal one hour following consumption and 3) blood glucose, appetite and blood pressure following the ad libitum meal to determine the "second meal effect" of hemp protein.
The objectives are to test the acute effects of different cereals containing pulse ingredients on: 1) post-prandial blood glucose, insulin and appetite for two hours, and 2) food intake two hours following consumption of pulse products. We hypothesize that cereals containing pulse ingredients will lead to lower blood glucose, insulin, appetite and food intake responses compared to non-pulse cereals.
The objectives are to test the acute effects of different bagels containing pulse ingredients on: 1) aerobic endurance and substrate oxidation during exercise 2) response of blood glucose, insulin and appetite to an aerobic exercise session, and 3) food intake two hours following the exercise session. We hypothesize that consumption of bagels containing pulse ingredients 60 minutes before exercise will increase aerobic endurance (lower oxygen consumption), decrease carbohydrate oxidation (greater respiratory quotient), and a reduction in lactate production during compared to the same exercise session following the ingestion of a non-pulse food. We also hypothesize that consumption of bagels containing pulse ingredients will lead to lower blood glucose, insulin, appetite and food intake, suggesting lower calorie compensation, following a 60-minute aerobic exercise session compared to the same exercise session following the ingestion of a non-pulse food.
Specific Aims: 1. The primary aims of this study are to conduct formative interviews with teen mothers to inform a targeted adaptation of empirically based weight management and parent training programs for teen mothers for their preschoolers. 2. To conduct a small pilot and post-pilot focus group of the feasibility and acceptability of recruitment and retention methods & the intervention. Study Hypotheses: Given the small sample size and fact that this is a pilot study, focus will be on estimating effect sizes rather than statistical hypothesis testing. However, the investigators exploratory hypotheses are as follows: 1. (a) The adapted intervention will be more feasible compared to the wellness control condition, with a participant retention rate of ≥80% and an average adherence (attendance at weekly treatment sessions; homework completion 5 weekdays weekly) is ≥ 75%; (b) The adapted intervention will be more acceptable compared to the wellness control condition, based on the Consumer Satisfaction Scale and Therapy Assessment Inventory with ≥90% of the participants responding to the item, "In general how satisfied were you with the intervention?" by choosing "unsatisfied" to "very satisfied." 2. (a) The adapted intervention will result in greater improvements in child behavior and parent-child connectedness compared to the control condition; (b) the adapted intervention versus wellness control condition will result in greater increases in child and teen mother individual as well as joint physical activity and physically active play and greater reductions in individual and joint teen mother and child sedentary behavior (television viewing) from baseline to post-intervention; (c) the greater teen mother and child fruit and vegetable consumption; and reduced child juice and sugar-sweetened beverage consumption from baseline to post-intervention; (d) the adapted intervention versus wellness control condition will result in smaller increases in child BMI percentile and teen mother BMI from baseline to post-intervention; (e) participants who attend higher numbers of intervention sessions will show greater improvements in target outcomes (child behavior, parent-child connectedness, and teen mother and child physical activity, sedentary behavior and BMI); with participants receiving the adapted intervention versus wellness control showing the greatest dose-based improvements.
The purpose of this study is to examine the effects of fluid dairy products on blood glucose and insulin, satiety and energy intake in normal weight and overweight/obese children in the age range of 9-14 y. Experiment 1: The specific objective is to examine the effects of isocaloric and isovolumetric amounts of 2% M.F. milk, 1% M.F. chocolate milk, 1.5% M.F. yogurt drink, tropical punch and water consumed before and within a pizza meal 60 min later on appetite and food intake. Experiment 2 will compare the effects of 2% M.F. milk and tropical punch consumed before and with a pizza meal 60 min later on food intake, blood glucose, and appetite hormone response.
We hypothesized that FA in a TV program watched during a meal, would block satiety responses to pre-meal energy consumption and delay satiation in OW/OB but not in NW boys and girls. Food intake was measured at 30 min following a glucose (1 g of glucose/kg body weight) or sweetened noncaloric beverage with or without the presence of food advertisements. Subjective appetite will be measured as well.
Approximately 15% of the US population is enrolled in the Supplemental Nutrition Assistance Program (SNAP), and 50% are children. Although the goal is to improve nutritional health, preliminary data suggest that enrollment in SNAP is associated with obesity and metabolic risks and that SNAP reimburses $4 billion annually for sugar-sweetened beverages (SSBs). This pilot project tests an innovative strategy to reduce purchase of non-nutritive, SSBs by low-income families with children by combining targeted point-of-purchase education with a randomized trial of financial incentives to discourage purchase of unhealthy beverages. The study will take place at a mid-size grocery store that is located in a low-income, Latino community and where 30% of purchases are made with SNAP. Targeted beverage education will be provided to all study subjects with a traffic-light system to identify healthy and unhealthy beverages at the point-of-purchase. Individual beverage purchases will be tracked by electronically stored cash register sales. Supplementary validation of beverage consumption will be assessed by 24 hour dietary recall. Aim 1 is to conduct a randomized controlled trial to compare purchase and consumption of SSBs by families assigned to a financial incentive to reduce purchase of SSBs with families assigned to control (no incentives). Aim 2 is to compare the purchase of SSBs by families in both arms during the study period when they are exposed to the traffic-light system to a baseline period prior to traffic-light education. Results of this project will provide pilot data for larger scale interventions to promote healthy choices among low-income families.
The purpose of this protocol is to study the effects of intact and hydrolyzed yellow pea protein, compared to intact and hydrolyzed whey protein, on satiety, food intake, and glucose metabolism in healthy young men. The specific objective is to investigate the effects of 20 g available protein for 4 different protein types (intact and hydrolyzed pea and whey proteins) and water (control) on satiety, food intake and blood glucose before and after a meal. The specified amount of protein was chosen based on our previous studies on intact pea protein suggesting that 20 g may reduce food intake and pre-meal blood glucose 30 minutes before a test meal. Whey protein has been chosen as a reference protein because it has been extensively studied and its effects on blood glucose and food intake are being elucidated within our laboratory.
The study investigated the effectiveness of home-based exercise combined with a slight caloric restriction on weight change during 12 months in non-obese women. In addition the investigators evaluate the effects of baseline insulin resistance on modulation of weight change. A randomized clinical trial with a factorial design was conducted from 2003 to 2005. Two hundred three middle-aged women (Rio de Janeiro/Brazil), 25-45 years, were randomly assigned to one of two groups: control (CG) and home-based exercise (HB). The HB group received a booklet on aerobic exercise that could be practiced at home (3 times/week - 40 min/session), in low-moderate intensity, during 12 months. Both groups received dietary counseling aimed at a slight energy restriction of 100-300 calories per day. The HB experienced a greater weight loss in the first 6 months (-1.4 vs. -0.8 kg; p=0.04), but after 12 months there was no differences between groups (-1.1 vs. -1.0; p=0.20). Of the serum biochemical markers, HDL-cholesterol showed major change, with an increase at month 12 of 18.3 mg/dl in the HB compared to 9.5 in the CG (p<0.01). At baseline the non-IR group (n=121) compared to IR (n=64) had similar values of BMI (26.7 vs. 26.3 p=0.21), but statistically significant lower values of waist, glucose, insulin and HOMA-IR, as expected. When the group non-IR and IR were further stratified by GI diet, there were no differences according to diet in both groups. Women classified as IR at baseline had greater weight loss after 12 months of follow-up (-1.62 kg vs. -1.08 kg; p=0.01), and HB exercise helped to reduce weight only among NIR women (-1.51 vs. -0.68; p=0.04); no differences were observed between intervention groups for IR women (-1.54 vs. -1.66; p=0.24). There were no differences between IR and NIR groups for lipid profile after adjustment for weight changes. During follow-up, changes were more pronounced among those women in the high GI diet. These differences were statistically significant for weight and BMI and were greater among the IR compared to the non-IR. Changes in HOMA-IR after 3 months of follow-up were different comparing non-IR with IR at baseline. The IR had a reduction in the HOMA-IR, whereas in the non-IR this value increased (-0.73 vs. +0.37; p=<0.001). Also this reduction was greater among high compared to low GI diet (p=0.04).
The investigators hypothesize exercise increases short term appetite and food intake, and interferes with satiety and satiations to a preload in normal weight, overweight and obese boys.