Dieta elevada em carboidratos complexos minimiza necessidade de suplementação durante jogo-treino de rúgbi: foco no sistema imune / Diet high in complex carbohydrates minimizes necessity for supplementation during rugby training game: focus on immune system / Una dieta elevada en hidratos de carbono complejos minimiza la necesidad de suplementación durante el entrenamiento en el deporte del rugby: foco en el sistema inmunitario

Resumo O estudo analisou a imunidade oral após treino de rúgbi em atletas submetidos à dieta com alto teor de carboidratos (DATC). Em estudo randomizado, duplo-cego e placebo controlado, 20 atletas consumiram DATC por três dias antes do experimento. Os atletas receberam aleatoriamente bebida carboidratada (CHO) ou placebo (PLA) e participaram de duas sessões de treino de rúgbi, separados por sete dias. Coletas de saliva foram feitas antes (Pré-E), imediatamente após (Pós-E) e 1 h após (1 h Pós-E) o jogo-treino. Houve diferença significativa em taxa de secreção de IgA-s para PLA somente no tempo 1 h Pós-E. DATC, dias antes de treino de rúgbi, preserva função imunológica oral independente da suplementação de CHO durante treino.

Abstract The study analyzed the oral immunity after rugby training in athletes undergoing diet high in carbohydrates (DATC). In a randomized, double-blind, placebo-controlled, 20 athletes consumed DATC for three days before the experiment. The athletes were randomly carbohydrate drink (CHO) or placebo (PLA) and participated in two training sessions of rugby, separated by seven days. Saliva samples were taken before (Pre-E), immediately after (Post-E) and 1 h after (1 h post-E) training. Significant difference in rate of s-IgA secretion to PLA only at time 1 h post-E. DATC, days before training rugby, preserves immune function independent of oral CHO supplementation during training.

Resumen El estudio analizó la inmunidad oral después del entrenamiento de rugby en jugadores sometidos a una dieta elevada en hidratos de carbono (DEHC). En un estudio aleatorizado, a doble ciego, controlado con placebo, 20 jugadores consumieron una DEHC durante 3 días antes del experimento. Los jugadores recibieron aleatoriamente bebida de hidratos de carbono (CHO) o placebo (PLA), y participaron en dos sesiones de entrenamiento de rugby, separadas entre sí 7 días. Las muestras de saliva fueron antes (pre-E), inmediatamente después (post-E) y 1 hora después (1 h post-E). Hubo una diferencia significativa en la tasa de secreción de s-IgA a PLA sólo en 1 h post-E. La DEHC, días antes de la sesión de rugby, preserva la función inmunológica independientemente de la suplementación de CHO durante el entrenamiento.

Association of inflammation, dyslipidemia, obesity and physical activity status in children

The aim of this study was to verify the association between inflammatory biomarkers, dyslipidemia, obesity and physical activity status in 10-years old children. Ninety-four children participated in this study and were classified into eutrophic (n=36), overweight (n=34) or obese (n=24) according to their body mass index (BMI). The genic expression of interleukin 6 (IL-6), tumor necrosis factor alpha (TNF-α) and chemokine C-C motif ligand 2 (CCL-2) mRNA; the serum concentration of high-density lipoprotein cholesterol (HDL-c) and triglycerides; BMI, percentage of body fat (% BF) and waist circumference; and the number of steps per day were determined. The expression of IL-6, TNF-α and CCL-2 were associated (p < 0.05) positively with serum triglycerides, BMI, % BF and waist circumference, and negatively with serum HDL-c. No association (p > 0.05) between pro-inflammatory biomarkers and number of steps per day was found