Modulação da glicemia pela dieta, massa corporal e atividade física em indivíduos jovens adultos aparentemente saudáveis

Abstract

Introduction: To date, the associations between glycemia parameters, diet and physical activity have not yet been clarified, generating conflicting opinions between research studies. Furthermore, the finding of joint associations between these can be strongly influenced by the type of population under study. Research jointly relating changes in the glycemic overload curve, including body mass, level of physical activity and diet, are essential for advancing knowledge in this area. Objective: To evaluate whether diet, body composition and level of physical activity influence fasting glycemia and the glycemic overload curve in apparently healthy young adults. Methodology: 80 apparently healthy individuals of both sexes aged between 18 and 30 years were analyzed. We applied a three-day food record to obtain the dietary pattern, carried out nutritional and physical assessment, measuring anthropometric measurements and bioimpedance examination. Fasting blood glucose was collected and soon after the volunteer ingested dextrose, after 30 minutes capillary blood glucose was measured again, continuing with the blood glucose curve examination at times 60, 90 and 120 minutes. Results: The glycemic curve showed no correlation (p > 0.05) with macronutrients and dietary patterns. The glycemic curve after dextrose overload in the whole group obtained significant differences over time, showing that carbohydrate overload raises blood glucose after 30 min of ingestion. In addition, there was a significant reduction at 60 min and the values stabilized after 90 minutes. The glycemic curve did not vary according to gender, blood pressure, and the variables body. Conclusion: The glycemic overload curve of apparently healthy young individuals in this study was not correlated with the level of physical activity, body composition, nor with the distribution of macro and micronutrients ingested. These changes may not have been observed because the participants in this research were young and apparently healthy.