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Filter by:The regulation of human body weight and fatness is not fully understood. Although some models of regulation have been proposed (set point, dual-intervention point, others), no studies have been designed to test their predictions. In this pilot and feasibility study, the investigators will implement an experimental approach to test the predictions of models of body weight regulation in humans. Men and women with either underweight or obesity will be exposed to a 2-day fasting followed by a 2-day ad-libitum refeeding. During the entire fasting-refeeding period, energy intake and expenditure will be accurately measured within metabolic chambers. The investigators will therefore determine the compensatory responses to fasting elicited to prevent weight loss. The results will serve to design and power future studies to better understand body weight regulation.
The randomized controlled trial design with one intervention arm (nutrition education and complementary feeding) and one control (usual care) arm (1:1 ratio). Randomization of each participant to the groups will be carried out using Random Allocation Software 1.0 (https://random-allocation-oftware.software.informer.com/1.0/) to intervention or control groups in a 1:1 ratio. The sample size to be recruited is 80 participants.
Introduction: The use of a nutritional protocols provides the standardization of assessment procedures and the optimization of nutritional status recovery of pre-surgical infants with Congenital Heart Disease (CHD). However, to our knowledge there are no validated instrument for presurgical nutritional support for infants with congenital heart disease (CHD) in Brazil. Objective: Assess the clinical effectiveness of the translated and cross-culturally adapted protocol, Nutritional Pathway for Infants with Congenital Heart Disease before Surgery (Marino et al., 2018), on the weight change of infants with congenital heart disease in two specialized cardiology hospitals in Southern Brazil in partnership with the UK research group that authored the original of protocol. Methods: A randomized, pragmatic clinical trial will be carried out. The sample will consist of children with CHD, between 0-12 months of age, awaiting cardiovascular corrective surgery from the Pediatric Outpatient Clinic in the Institute of Cardiology (IC) and Children's Hospital Santo Antonio of Santa Casa de Misericordia. The previously translated pre-surgical nutritional intervention protocol for infants with congenital heart disease will be compared with current routine nutritional guidelines used in the follow-up services of children with congenital heart disease in these institutions within the national public healthcare, SUS. Intended results: It is expected that the culturally-adapted pre-surgical nutritional support protocol for children with congenital heart disease will be effective in pre-surgical infant weight gain, which will likely improve surgical prognosis and clinical outcomes. And we hope that this protocol will promote the standardization of care, and will provide an empirically-based nutritional intervention that may improve the effectiveness of nutritional recovery in the CHD infants. Furthermore, the results may be used in the formulation of Brazilian guidelines for comprehensive care of children with congenital heart disease.
The main aim of the present study is to compare the effect of a 12-week physical activity program on body weight gain and body composition changes between normal weight and constitutionally lean individuals. The second objective will be to question the potential additional effect of a protein supplementation coupled to the physical training intervention on body wright and body composition in constitutionally lean women.