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Previous issue date: 2017-08-03 / O objetivo desse estudo foi de investigar o efeito de jogos competitivos em um calend?rio congestionado sobre a imunidade da mucosa em jovens jogadores de futebol. Para o desenvolvimento desta pesquisa foi realizado um estudo observacional, de car?ter descritivo, transversal, com uma abordagem quantitativa. Participaram dessa pesquisa doze jovens jogadores de futebol de campo do sexo masculino, pertencentes a uma mesma equipe (idade: 16,6?0,51 anos; estatura: 175?8cm; massa corporal: 65?7,9kg), da categoria sub 17, que jogaram quatro jogos competitivos (J1, J2, J3 e J4) com 24 horas de intervalos entre os jogos. Para quantifica??o da imunoglobulina A salivar (S-IgA), esse foi expresso como concentra??o absoluta de IgA (s-IgAabs), taxa de secre??o de IgA (s-IgAtaxa) e fluxo salivar (FS). Para a carga interna competitiva, a mesma foi determinada pela Percep??o Subjetiva de Esfor?o da sess?o (PSE). O tempo de jogo de cada atleta participante durante os quatro jogos foi registado para determinar a carga interna competitiva pela PSE da sess?o, assim como a monotonia e o esfor?o competitivo. Os dados est?o apresentados em de m?dia e desvio padr?o. Verificou-se a normalidade das vari?veis dependentes com o teste de Shapiro Wilk (p > 0,05). Utilizou-se o teste t de Student para an?lise do IgA salivar e taxa de fluxo salivar no primeiro e no quinto jogo da competi??o. ANOVA de medidas repetidas comparou a PSE da sess?o e a carga interna ao longo dos jogos, o post hoc de Bonferroni foi utilizado para identificar as diferen?as entre as medidas. O ?d? de Cohen foi utilizado para estimar a magnitudes das diferen?as (tamanho do efeito - TE) entre todas as compara??es. Foi utilizado o coeficiente de correla??o de Spearman para analisar a correla??o entre o ?ndice de monotonia e o esfor?o competitivo com o SIgA absoluto. Os valores de PSE da sess?o n?o foram diferentes ao longo dos jogos F(4,33) = 1,680, p < 0,1902, ??: 0,72. Os valores de carga interna diferiram ao longo da competi??o F(4,33) = 6,299, p = 0,001, ??:0,66. Sendo observado diferen?as nos jogos 2 e 4 em compara??o com o 3 (p<0,05). As concentra??es de IgA salivar absolutos e relativos diminu?ram ap?s a competi??o quando comparado com o momento pr? competi??o (IgA absoluto t (11) = 2,744 p = 0,01 e IgA relativo (t (11) = 2,744, p = 0,04). Diferentemente, a taxa de fluxo salivar pr? jogos foi semelhante ao momento p?s t (11) = 0,1010, p = 0,921). A associa??o entre os valores do delta de varia??o do IgA salivar absoluto com a monotonia da competi??o, verificou-se que houve uma alta correla??o significante com um (r = 0,62: p=0,031). Al?m disso foi encontrada uma correla??o quase significante entre o esfor?o competitivo e o delta de varia??o do IgA absoluto (r = 0,57: p=0,051). Os dados demonstraram que jogos competitivos em um calend?rio congestionado diminu?ram a imunidade da mucosa em respostas ao aumento da carga interna percebida. / The purpose of this study was to investigate the effect of competitive games on a congested schedules on mucosal immunity in young soccer players. For the development of this research, an observational, descriptive, cross-sectional study was conducted with a quantitative approach. Twelve young male soccer players from the same team (age: 16.6 ? 0.51 years, height: 175 ? 8cm, body mass: 65 ? 7.9kg), from the sub category 17, who played four competitive games (J1, J2, J3 and J4) with 24-hour breaks between games. For quantification of salivary immunoglobulin A (S-IgA), this was expressed as absolute concentration of IgA (s-IgAabs), IgA secretion rate (s-IgAtaxa) and salivary flow (FS). For the competitive internal load, it was determined by the Subjective Effort Perception of the session (PSE). The playing time of each participating athlete during the four games was recorded to determine the competitive internal load by the PSE of the session, as well as the monotony and the competitive effort. Data are presented as mean and standard deviation. Normality of the dependent variables was verified with the Shapiro Wilk test (p> 0.05). Student's t-test was used to analyze salivary IgA and salivary flow rate in the first and fifth games of the competition. Repeated measures ANOVA compared the session PSE and the internal load throughout the games, the Bonferroni post hoc was used to identify the differences between the measures. Cohen's "d" was used to estimate magnitudes of differences (effect size - TE) among all comparisons. The Spearman correlation coefficient was used to analyze the correlation between the monotony index and the competitive effort with the absolute SIgA. The PSE values of the session were not different throughout the games F (4,33) = 1,680, p <0,1902, ??: 0,72. The internal load values differed throughout the competition F (4,33) = 6.299, p = 0.001, ??: 0.66. Differences were observed in games 2 and 4 compared to 3 (p <0.05). Absolute and relative salivary IgA concentrations decreased after competition when compared to the pre-competition time (absolute IgA t (11) = 2.744 p = 0.01 and relative IgA (t (11) = 2.744, p = 0.04) The salivary flow rate pre-set was similar to the post-t (11) = 0.1010, p = 0.921). The association between the values of the absolute salivary IgA variation delta and the monotony of the competition showed that there was a significant high correlation with one (r = 0.62: p = 0.031). In addition, a quasi-significant correlation was found between the competitive effort and the absolute IgA variation delta (r = 0.57: p = 0.051). The data demonstrated that competitive games in a congested schedules decreased mucosal immunity in response to increased internal perceived load.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/24758 |
| Date | 03 August 2017 |
| Creators | Oliveira, Romerito S?stenes Canuto de |
| Contributors | 15986356896, Moreira, Alexandre, 13238963848, Costa, Eduardo Caldas, 05304117417, Elsangedy, Hassan Mohamed, 04459139910, Fortes, Leonardo de Sousa, 01503116646, Mortatti, Arnaldo Luis |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM EDUCA??O F?SICA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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