Efeitos do exercício físico sobre o comportamento dos hormônios da tireoide e cortisol em escolares com sobrepeso e obesidade : um estudo de intervenção interdisciplinar.

Abstract

ABSTRACT 1: Purpose: Thyroid hormones and cortisol may have an impact on weight reduction. Objective is to evaluate whether an interdisciplinary intervention program (with physical exercises, nutritional and psychological orientation) can influence the changes in thyroid hormones and cortisol in overweight and obese students. Method: This is a non-randomized, quasi-experimental study conducted with schoolchildren diagnosed with overweight and obesity in the city of Santa Cruz do Sul, RS. The sample consisted of 23 subjects in the experimental group and 23 in the control group. The intervention occurred during the 6-month period. Evaluations of thyroid hormones and cortisol were performed before and after intervention. Results: The intragroup comparison of the hormonal dosages showed that there was an increase in cortisol levels in the experimental group and an increase in T4 levels in the control group. Conclusion: It was concluded that cortisol hormone showed an increase after intervention. However, no significant changes were found in thyroid hormones. ABSTRACT 2: Introduction: Obesity is a health problem all over the world. Thyroid dysfunction and stress are associated with changes in body weight composition. Objective: To verify the possible changes in the grouping of the anthropometric indicators and hormonal markers of the thyroid and cortisol, after interdisciplinary intervention with physical exercises in adolescents with overweight and obesity. Method: This is a quasi-experimental study, carried out with schoolchildren diagnosed with overweight and obesity. The sample consisted of 23 subjects in the experimental group and 23 in the control group, and the intervention occurred during the 6-month period. Evaluations of the anthropometric indicators, thyroid hormones and pre and post intervention cortisol were performed. Results: Anthropometric indices presented as the main factorial components of this study, both for the GE and GC. At the time of pre-intervention, the factorial analysis grouped 2 factors in the EG (Factor 1-IMC, CC,% G and T4, Factor 2 - T3, T4, TSH and cortisol), which represented 57.17% of the total variance of the model (Factor 1 - BMI, CC,% G, Factor 2 - T4, TSH, cortisol, Factor 3 - T3 and T4), representing 78.66% of the total variance. In the pre-intervention control group, 3 factors represented 74.44% of the total and post-intervention variables, representing 79.51% of the total variance. Conclusion: Both groups presented modifications in their components. However, the EG presented changes in groupings at the pre (2 Factors) and post-intervention (3 Factors) moments while the CG both pre- and post-intervention had 3 Factors.