Effects of multicomponent interventions on biochemical markers in obese youth: a systematic review protocol

Physical exercise is effective in modulating circulating inflammatory markers of obesity. However, little is known about the effects of interventions with physical exercise programs accompanied by nutritional and/or psychological guidance, configuring themselves as multicomponent programs. Thus, the aim of this review is to systematically evaluate the evidence related to the effects of multicomponent weight-loss interventions in modulating circulating inflammatory markers in children and adolescents. Therefore, the following databases will be searched to identify all relevant articles: PubMed, SciELO, Lilacs, Web of Science, EMBASE, Scopus, SPORT Discus. Randomized controlled trials and quasi-experimental studies of children and adolescents (6 to 18 years old) will be included. Eligible interventions will target weight-related behaviors (including diet, physical activity, behavior modification and/or combinations thereof). Two independent reviewers will select studies using Rayyan QCRI software and extract the data to a standard form. The main outcomes of the review will be the circulating values of leptin, interleukin 6 (IL-6) and tumor necrosis factor-alpha (TNF- α) in a quantitative way. To assess the methodological quality (or risk of bias) of individual studies, Effective Public Health Practice Project assessment tool will be used. The meta-analysis will be performed using the Review Manager software.