Pilot study about the evaluation of the revenue of apprentices of swimming previously submerged in water to different temperature/Estudo piloto sobre a avaliacao do rendimento de praticantes de natacao previamente submersos em agua a diferentes temperaturas

The swimming is sport modality that it grows in an exponential way in the last 20 years, so much for therapeutic ends and it gets better of the life quality as for sporting and competitive ends. With that, the modality besides winning more followers with relationship practical the possesses deserved space in the I half inform. The present study had objective to verify the physiologic alterations related to the aspects thermal regulation in apprentices with age from 14 to 16 years of swimming, in a specific way I swim him crawl 100 and 200 meters, where the sharp answer was observed in relation to the exercise and possible improvement in the acting when the sample was submitted to the submersion in tanks with temperatures from 22 to 42 centigrade degrees with duration of 5 minutes and 15 minutes in hot and cold water respectively. The results were controversial, however in the sample, an improvement was verified around 10% in the revenue when the swimmers were submerged for 15 minutes in hot water to 42 degrees in relation to the time it controls, possibly for the economy of oxygen with relationship to the change of heat in the water. They are more necessary researches to elucidate physiologic alterations and thermal regulation harnessed to the revenue in swimming apprentices. Key words: Swimming, Catecholamines, Revenue, Submersion. A natacao e modalidade desportiva que cresce de forma exponencial nos ultimos 20 anos, tanto para fins terapeuticos e melhora da qualidade de vida como para fins esportivos e competitivos. Com isso, a modalidade alem de ganhar mais adeptos com relacao a pratica, possui merecido espaco no meio cientifico. O presente estudo teve objetivo verificar as alteracoes fisiologicas relacionadas aos aspectos termorreguladores em praticantes com idade de 14 a 16 anos de natacao, de forma especifica o nado crawl 100 e 200 metros, onde foi observada a resposta aguda em relacao ao exercicio e possivel melhora no desempenho quando a amostra foi submetida a submersao em tanques com temperaturas de 22 a 42 graus centigrados com duracao de 5 minutos e 15 minutos em agua quente e fria respectivamente. Os resultados foram controversos, porem na amostra, foi verificada uma melhora em torno de 10% no rendimento quando os nadadores ficaram submersos durante 15 minutos em agua quente a 42 graus em relacao ao tempo controle, possivelmente pela economia de oxigenio com relacao a troca de calor na agua. Sao necessarias mais pesquisas para elucidar alterac