Universidade Estadual do Rio de Janeiro

The objective of the present study is to estimate the effect of nudging proposals on the students' Body Mass Index, based on changes made in the school environment. This is a factorial randomized community trial, which will be conducted in 18 public schools in the city of Duque de Caxias, RJ.

Patients with coronary artery disease (CAD) aged 40-70 years will undergo exercise training (thrice weekly for 12 weeks). A reference group composed of healthy individuals will be included. Evaluations will be conducted at baseline and after the intervention period during two visits. During the first visit, carotid artery thickness will be assessed via ultrasound before and after a cardiopulmonary exercise testing. The second visit will include the evaluation of endothelial function using venous occlusion plethysmography. After this, participants will engage in 30 minutes of moderate-intensity aerobic exercise, and blood samples will be collected pre- and post-exercise. Circulating levels of kynurenine pathway (KP) metabolites (Tryptophan, kynurenine, kynurenic acid, and quinolinic acid), pro-inflammatory cytokines, cell adhesion molecules, and lipid profiles will be measured via Enzyme-Linked Immunosorbent Assay (ELISA), multiplex essays, and biochemical analysis; respectively.

The goal of this study is to conduct an experimental, controlled, and randomized study, which will involve two data collection points - pre-intervention, post-intervention and a follow-up to asses the impact of the program. The study will be carried out with two groups - an intervention group and a control group, consisting of nurses interested in participating in the Positive Nursing Practice Environments Promotion Program (PAPEP), a multi-component intervention program aimed at promoting positive nursing practice environments. Participant allocation will be conducted randomly, using software to ensure stratified randomization of participants between the two groups.