Influência da suplementação de carboidrato na função imune de judocas durante o treinamento

• Autor(a) principal: Mendes, Edmar Lacerda
• Data de Publicação: 2007
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/2803
• topic: Atletas; Nutrição; Carboidratos; Sistema imunológico; Metabolismo; Athletes; Nutrition; Carbohydrates; Immunological system; Metabolism; CNPQ::CIENCIAS DA SAUDE::NUTRICAO::ANALISE NUTRICIONAL DE POPULACAO

The aim of this study was to investigate the effects of carbohydrate supplementation on the immunological function of judo s athletes during a training session. Sixteen male judo athletes, aged 24.06 ± 2.59 years (mean ± SD) and body weight 76.78 ± 9.42kg, were assessed during two training sessions with 3 days interval. In each training session the athletes drank a carbohydrate (CHO) or placebo solution (PLA - 3mL/kg body weight) every 15 min for 2 hours in a randomized and double blind way following a cross-over design. Immunological parameters, blood lactate and glucose concentrations were assessed before exercise (Pre-E), after exercise (Post-E), and 1 hour after resting (1h Post-E). The results showed that the levels of blood glucose increased during training session (p < 0.003) in athletes taking CHO and decreased (p<0,002) in those ingesting PLA. In the Post-E period the levels of blood glucose was higher in athletes consuming CHO as compared with those ingesting PLA (p < 0.05). The levels of cortisol increased during the training session both conditions (CHO and PLA, p < 0.05) and 1h Post-E in athletes taking PLA (p < 0.03). The levels of IgA-S reduced during training session independent of the ingested solution (p < 0.0002). CHO consumption reduced the leukocyte number as compared to PLA in both Post-E and 1h Post-E (p<0.05) periods. Athletes consuming PLA presented a decreased number (p<0.05) of lymphocytes both in Post-E and 1h Post-E as compared to the Pre-E period. The monocyte number was not different (p>0.05) from the Pre-E to the Post-E period, independently of the ingested solution. The consumption of CHO did not reduce the monocyte number from the Post-E to the 1h Post-E period. An increase in the number of eosinophil from the Pre-E to the Post-E period was observed in athletes ingesting PLA (p<0.05). Such increase was higher 1h Post-E, but not statistically different as compared to the Post-E period (p>0.05). The neutrophil number increased from the Pre-E to the Post-E in athletes taking either CHO or PLA (p<0.05). From the Post-E to the 1h Post-E period the number of neutrophil also increased in both situations but did not reach statistical significance (p>0.05). The magnitude of the increase in athletes ingesting PLA was higher then that of CHO either in the Post-E or 1h Post-E (p<0.05). Blood lactate concentration increased from the Pre-E until 60 min of exercise in both conditions (p<0.05). From the Post-E to the 1h Post-E period blood lactate concentrations reduced in both conditions (p<0.05). No differences between groups were observed throughout the training session (p>0.05). The increase in blood lactate concentration in response to training was correlated with the increase in the leukocyte number (r = 0. 86, p<0.001). It was concluded that: a) the ingestion of carbohydrate during a judo training session did not induce changes in the oral immunity of the athletes, nevertheless during the resting period such procedure protected the immunity of the superior respiratory tract; b) the judo training session and the ingestion of CHO resulted in less disturbance of total leukocytes and lymphocytes, monocytes, eosinophils, neutrophils as compared to the ingestion of PLA; and c) the training intensity was associated with the increase in the leukocyte number.