Concentrações de lactato sanguíneo após teste incremental máximo em corredores com diferentes idades
DOI:
https://doi.org/10.11606/1807-5509201800010005Palavras-chave:
Resistência Física, Ácido Láctico, Teste de Exercício, CorridaResumo
O objetivo deste estudo foi investigar o efeito da idade sobre a concentração pico de lactato após teste incremental máximo em corredores recreacionais. Setenta corredores foram recrutados. Os quatro grupos foram: ≤25 anos; 26-35 anos; 36-45 anos; >45 anos). Os participantes realizaram um teste incremental com início a 8 km·h-1, incrementos de 1 km·h-1 a cada três minutos até exaustão voluntária. Amostras sanguíneas foram coletadas antes e nos minutos zero, terceiro, quinto e sétimo após o teste para a determinação das concentrações de lactato. A concentração pico de lactato (LApico) foi definida para cada participante como o maior valor entre as quatro amostras coletadas após o teste. As concentrações de lactato foram influenciadas pela idade, no qual os valores de LApico dos corredores mais novos (10,8 ± 2,6 mmol·L-1) foram maiores dos que os valores dos outros corredores (8,1 ± 3,1; 7,0 ± 1,1; 6,9 ± 2,8 mmol·L-1 para os grupos com idades de 26-35, 36-45 anos e 45 anos, respectivamente). O LApico ocorreu mais frequentemente no terceiro e quinto minuto após o teste. Em conclusão, as concentrações de lactato após o teste incremental foram influenciadas pela idade, com maiores valores no grupo de corredores com idade ≤25 anos do que os outros grupos. Além disso, o LApico ocorreu mais frequentemente no terceiro e quinto minutos após o teste incremental.
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