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Publication
O efeito do aquecimento na natação pura desportiva – Análise termográfica
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Advisor(s)
Abstract(s)
Este estudo teve como objectivo analisar os efeitos de um aquecimento padrão
realizado na água, com dois tempos de repouso diferentes antes de um teste máximo de
100 metros livres. A amostra foi constituída por 6 nadadores masculinos de clubes de
natação da associação do norte de Portugal com experiencia competitiva a nível
nacional de 6 anos (idade 18,17 ± 1,60; altura 1,72m ± 0,08cm; peso 70,5kg ± 9,61;
IMC 22,83 ± 2,75; tempos aos 100m livres de 56,7 ± 1,48 segundos correspondendo a
uma pontuação FINA, em média, de 570 pontos ± 44,5). A máquina termográfica
utilizada para este estudo foi uma máquina da marca Flir i60, 180x180. O estudo teve
lugar em dois dias diferentes, com 48horas entre eles para assegurar a recuperação dos
sujeitos. Após aclimatização dos sujeitos foram retirados 3 termogramas nos mesmos
momentos relativamente ao teste máximo, antes do aquecimento, imediatamente antes e
depois do teste máxima, em que a única variável que muda é o descanso total do atleta
entre o aquecimento e o teste máximo. O tratamento dos dados foi feito através do
software “Flir Tools” onde é possível analisar todas as variáveis contidas nos
termogramas. Assim como a técnica não paramétrica “U” de Mann Whitney e a técnica
não paramétrica de Spearman. Como aplicações práticas, podemos retirar desde estudo
que o aquecimento parece ser benéfico ao rendimento desportivo na prova dos
100metros livres; o efeito do aquecimento parece baixar ao longo do tempo uma vez
que os piores resultados do teste máximo foram encontrados no segundo dia de teste,
onde o tempo de repouso antes do teste máximo era de 20minutos vs os 10minutos de
repouso utilizados no primeiro dia de testes.
The aim of this study was to analyze the effects of a specific water warm-up, with two distinct rest times prior to the maximal 100 freestyle test. Six male swimmers with six years of nacional competitive experience were analyzed (age 18,17 ± 1,60; height 1,72m ± 0,08cm; body mass 70,5kg ± 9,61; IMC 22,83 ± 2,75; 100m freestyle times of 56,7 ± 1,48 seconds matching a fina score, in average of 570 points ± 44,5). The thermographic camera used for this study was branded Flir i60, 180x180. Study took place in two different days, 48h apart to ensure the rest of the subjects. All procedures were replicated in the second day with the difference of an extra 10 minute rest after the warm-up until the maximal test. Three thermograms were taken, prior to in water warm-up, immediately before and after the maximal test. Data processing was done using “Flir Tools” software, where we can analyze all the variables contained in the thermogram, Microsoft excel, and the non-parametric statistic technique “U” Mann Whitney and Spearman. It was concluded with the results obtained that the warm-up seems to be beneficial to physical performance on the 100m freestyle, and that the effect of the warm-up decreases over time, as the worst results were found in the second day of testing where the rest time between the warm-up and the maximal test was 20minutes vs the 10minutes rest in day one, prior to maximal test.
The aim of this study was to analyze the effects of a specific water warm-up, with two distinct rest times prior to the maximal 100 freestyle test. Six male swimmers with six years of nacional competitive experience were analyzed (age 18,17 ± 1,60; height 1,72m ± 0,08cm; body mass 70,5kg ± 9,61; IMC 22,83 ± 2,75; 100m freestyle times of 56,7 ± 1,48 seconds matching a fina score, in average of 570 points ± 44,5). The thermographic camera used for this study was branded Flir i60, 180x180. Study took place in two different days, 48h apart to ensure the rest of the subjects. All procedures were replicated in the second day with the difference of an extra 10 minute rest after the warm-up until the maximal test. Three thermograms were taken, prior to in water warm-up, immediately before and after the maximal test. Data processing was done using “Flir Tools” software, where we can analyze all the variables contained in the thermogram, Microsoft excel, and the non-parametric statistic technique “U” Mann Whitney and Spearman. It was concluded with the results obtained that the warm-up seems to be beneficial to physical performance on the 100m freestyle, and that the effect of the warm-up decreases over time, as the worst results were found in the second day of testing where the rest time between the warm-up and the maximal test was 20minutes vs the 10minutes rest in day one, prior to maximal test.
Description
Dissertação apresentada para a obtenção do grau de Mestre em
Desporto com especialização em Treino Desportivo
Keywords
natação aquecimento