View clinical trials related to Body Weight.
Filter by:This is a one-year clinical trial to assess weight-loss, weight-maintenance, and biochemical parameters following a weight-control diet using either standard food guide pyramid alone, or standard food guide pyramid with substitution of mushrooms for meat.
The purpose of this National Cancer Institute (NCI) funded study is to develop and test the acceptability and usability of a web & text message based weight loss intervention for childhood acute lymphoblastic leukemia (ALL) survivors. Childhood cancer survivors ages 7 - 18 will provide feedback during focus groups on a web and text message based program that was developed.
The purpose of the National Cancer Institute (NCI) funded randomized controlled study is to develop and evaluate a text message (SMS) based weight loss intervention to 309 overweight or moderately obese English and Spanish speaking adults ages 21 - 60. The investigators propose that participants randomized to the intervention arms will lose significantly more weight than those participants randomized to the control group.
The main hypothesis for this study is that increased Body Mass Index (BMI) alters oral contraceptive metabolism in a manner which results in decreased effectiveness in obese women.
This is a 4-arm, randomized controlled trial to evaluate the effectiveness of financial incentives to motivate and sustain long-term weight loss. The study will recruit eligible employees at a large health management company to participate in a 6-month weight loss program and have weight measurements for an additional 3-month follow-up period. The primary outcome measure in this randomized controlled trial will be pounds of weight lost. The experimental groups will include variations of deposit contracts (participants put their own money at risk, and lose that money if they fail to achieve their weight loss goal) and fixed payments. The use of deposit contracts is a powerful mechanism for inducing behavior change that is based on loss aversion, a psychological concept first described by Nobel Prize winner Daniel Kahneman and Amos Tversky in 1979. A deposit contract takes advantage of the fact that people typically feel the pain of a loss more than the pleasure of a gain, increasing ones motivation to reach a goal. The study hypotheses are 1) mean weight loss will be greater in all intervention groups compared to the control group by the end of 24 weeks; and 2) individuals in the intervention groups will have a lower mean weight at the end of the 3-month follow-up period than individuals in the control group.
This study will test the effectiveness of breast milk expression discharge instructions in digital video disc (DVD) format for home use by mothers of very low birth weight infants on the dose and duration of mother's breast milk feeding in their infants compared to breast milk expression discharge instructions in printed format. The investigators hypothesize that infants whose mothers receive breast milk expression discharge instructions via DVD will receive a larger dose of maternal breast milk and for longer duration during the initial neonatal intensive care unit hospitalization than infants whose mothers receive discharge instructions in printed format.
The present study will assess whether the size of treatment groups (groups of 10 vs. 30 participants) affects short- and long-term weight loss. It is hypothesized that participants assigned to a small group will exhibit similar short-term and long-term weight losses (i.e., weight loss at months 6 and 12) as compared to those assigned to a large group.
The overall purpose of this research is to test whether adding a supplement to the feeding of extremely low birth weight infant (infants weighing less than 2 pound 2 oz at birth) will help him/her achieve full feeding faster and achieve better weight gain.
Study design: Double blind, randomized, placebo controlled study.The proposed study will consist of two main segments: 1. Segment 1 is aimed to assess the effect of 6-12 months treatment with nutritional supplementation standardized formula, in short and lean prepubertal children on weight SDS, height SDS, BMI SDS and growth velocity 2. Segment 2 is aimed to explore the eating behavior of idiopathic short stature and lean prepubertal children against their sibling who have a normal height and body weight and to find out whether there is a difference in eating patterns and quality of life between idiopathic short stature and lean prepubertal children and children with normal height and body weight Segment 1 Population: 200 subjects and controls will be recruited to segment 1 of the proposed study, 100 at each group. Participants will be recruited from healthy children who will be referred to either the institute for endocrinology or the gastroenterology unit, at Schneider Children's Medical Center for growth assessment, due to low height and weight, in whom, no gastrointestinal morbidity or other underlying cause was found. Methods: Randomization & Blinding: Participants will be randomly assigned either to the intervention group or the placebo control group. Randomization for the two study groups will be made in a ratio of 1:1. Both participants and study team will be blinded to the type of treatment that each patient will receive during the first 6 months of the study. Treatment: Participants in the intervention group will be treated with a nutritional supplementation standardized formula.Participants in the control group will be instructed to consume the same volume of formula as was calculated if they were in the intervention group. Treatment duration: The study will be divided into two treatment periods: 6 months of intervention versus active placebo followed with additional 6 months (an extension period), in which participants at the intervention group will be offered to extend the intervention period and participants at the control arm will be offered to switch to the intervention group. Study Schedule: Follow up visits will take place at 0, 3, 6, 9 and 12 months and will include: 1. Demographic data, medical history and growth data (month 0): Demographic parameters, including birth date, gender, birth weight and length for gestational age, medical history and growth data, including height velocity, parent's and sibling's weight and height will be documented from patient's file. 2. Nutritional assessment 3. Anthropometric assessment (months 0, 3, 6, 9 12): 1. Height without shoes 2. Length 3. Weight with light cloths and without shoes 4. MAC 5. Body mass index (BMI) will be calculated from children's weight and height and age and gender specific BMI SDS will be calculated 6. Body composition assessment using the method of bioelectrical impedance 4. Laboratory parameters (months 0, 6 and 12): 5. Sleeping Questionaire Segment 2: 86 subjects and controls will be recruited to segment 2 of the proposed study Population: Short and lean prepubertal children participating at segment 1 of the study and who are at study entry under 10th percentile in height, when the weight percentile is equal or smaller to the height percentile. Only participants from segment 1 who have siblings with normal height and body weight for age and gender, will be able to participate in segment 2 of the study Control group 1: Sibling of participants in segment 1 of the study, who have a normal height- above 25th percentile and normal BMI for age and gender- above 5th percentile and under 85th percentile. Control group 2: Healthy children from the community who have a normal height above 25th percentile and normal BMI for age and gender above 5th percentile and under 85th percentile Segment 2 of the study will be designed as a case- control study and will focus on the eating patterns, sleeping patterns and quality of life of participants at segment 1 at time 0 month of the study, before the beginning of the nutrition intervention. These findings will be compared to data of a control group, which will be comprised of siblings of participants in segment 1, with normal height and body weight which are matched in age.
The prevalence of obesity in young adults has been increasing, and excessive body weight have been linked to numerous chronic conditions including cardiovascular disease, diabetes, many forms of cancer, and numerous musculoskeletal problems. This study will focus of the development and evaluation of interventions that may be appropriate for young adults (age 18-35 years) to improve weight loss outcomes following a 24 month intervention. The primary aim of this study is to examine whether an enhanced weight loss intervention (EWLI) that includes technology components results in improved weight loss in young adults (18-35 years of age) compared to a standard behavioral weight loss intervention (SBWP) over a period of 24 months. Eligible participants will also be assessed for body composition, body fat distribution, fitness, physical activity, dietary intake, and behavioral/psychosocial measures that may be predictive of behavior change. Assessments will occur at 0, 6, 12, 18, and 24 months. Subjects will participate in a 24 month behavioral weight loss program that includes a reduction in energy intake and moderate-to-vigorous intensity exercise (progressively increasing from 100 to 300 minutes per week). The technologies added to EWLI are text messaging, a wearable device that provides feedback on physical activity, and access to a website to monitor dietary behaviors.