The purpose of this study was to determine the influence of swimming on 10-12 years old children. There were 4 groups of schoolchildren: swimming group of boys (25 persons), swimming group of girls (15 persons), boys nonswimming group (25 persons) and girls nonswimming group (15 persons). There were 80 schoolchildren with the average age of 11,2±0,74 years. The high and weight were measured. Also were measured size of a chest, vital capasity. The results showed that no solid diference of high were found between the groups. Higher values of body mass were found in both swimming groups in comparison with nonswimming groups. Larger vital capasity were also found in swimming groups. The results showed that swimmers had stronger pulmonary system than nonswimmers. There was found positive efect of swimming on pulmonary system, swimming also helps to increase vital capasity of 10-12 years old pupils.

Submitted by Izabel Franco (izabel-franco@ufscar.br) on 2016-09-19T20:00:07Z No. of bitstreams: 1 DissPRS.pdf: 1555305 bytes, checksum: ec8ce9901e9f1d2473840499dd064224 (MD5) / Approved for entry into archive by Marina Freitas (marinapf@ufscar.br) on 2016-09-20T14:04:41Z (GMT) No. of bitstreams: 1 DissPRS.pdf: 1555305 bytes, checksum: ec8ce9901e9f1d2473840499dd064224 (MD5) / Approved for entry into archive by Marina Freitas (marinapf@ufscar.br) on 2016-09-20T14:04:47Z (GMT) No. of bitstreams: 1 DissPRS.pdf: 1555305 bytes, checksum: ec8ce9901e9f1d2473840499dd064224 (MD5) / Made available in DSpace on 2016-09-20T14:04:54Z (GMT). No. of bitstreams: 1 DissPRS.pdf: 1555305 bytes, checksum: ec8ce9901e9f1d2473840499dd064224 (MD5) Previous issue date: 2015-02-27 / Background and objective: Dysanapsis ratio (DR), peak oxygen uptake (VO₂ peak) and age are studied as determinants of expiratory flow limitation (EFL) during exercise. However, it is not yet known whether they can elucidate EFL in young and middle-aged healthy individuals of the same sex. The objective of this study was to investigate the interaction between determinants of LFE (VO₂ peak, DR and age) during different exercise intensities performed in cycle ergometer. Methods: Twenty Two men, 11 young men, and 11 middle-aged men performed the following tests: measurement of respiratory muscle strength, lung function test (DR), cardiopulmonary test (VO₂ peak), and two constant load tests to assess EFL at loads of 75% and 125% of gas exchange threshold (GET). The unpaired t test and the Mann-Whitney test were used to compare groups and two-way ANOVA was used to analyze the effect of age and exercise intensity on the variables of the constant load test (CLT). Stepwise multiple regression was used to analyze the interaction between VO₂ peak, DR, and age and EFL. The significance level was set at p<0.05. Results: Only the middle-aged group presented EFL at both exercise intensities; the groups were similar in relation to respiratory muscle strength, VO₂ peak, and DR; EFL was not associated with VO₂ peak or DR, but it was associated with age during high-intensity exercise (p<0.001). Conclusion: In the experimental conditions, age was the only factor that was related to the presence of EFL during exercise. / Contextualização e objetivo: Dysanapsis ratio (DR), consumo de oxigênio pico (VO₂ pico) e a idade são estudados como determinantes da limitação ao fluxo expiratório (LFE) durante o exercício. No entanto, ainda não foi avaliado se eles podem justificar a presença de LFE em homens saudáveis, jovens e de meia idade. O objetivo deste trabalho foi verificar a interação entre determinantes da LFE (VO₂ pico, DR e idade) durante diferentes intensidades de exercício físico realizado em cicloergômetro. Métodos: Vinte e dois homens, 11 jovens e 11 meia idade, realizaram às seguintes avaliações: medida da força muscular respiratória, prova de função pulmonar (para medida da DR), teste cardiopulmonar (para medida do VO₂ pico) e dois testes de carga constante (TECC) para avaliação da LFE nas cargas de 75% LAv e 125% LAv. Utilizou-se o teste t não pareado e o teste de Mann-Whitney para comparar os grupos e ANOVA two-way para a análise do efeito da idade e da intensidade de exercício, nas variáveis do TECC. A análise de interação entre o VO₂ pico, a DR e a idade com a LFE foi feita por regressão múltipla, modelo stepwise. O nível de significância foi p<0,05. Resultados: Apenas o grupo meia idade apresentou LFE em ambas as intensidades de exercício; os grupos estudados não apresentaram diferenças em relação à força muscular respiratória, ao VO₂ pico e a DR; a LFE não apresentou relação com o VO₂ pico e a DR, mas se relacionou com a idade, durante exercício de alta intensidade (p<0,001). Conclusão: Nas condições experimentais estudadas, a idade foi o único fator que se relacionou com a presença de LFE durante o exercício em cicloergômetro. .