%0 Journal Article
%T Immune responses, upper respiratory illness symptoms, and load changes in young athletes during the preparatory period of the training periodization
%A Brunelli DT
%A Borin JP
%A Rodrigues A
%A Bonganha V
%A Prestes J
%A Montagner PC
%A Cavaglieri CR
%J Open Access Journal of Sports Medicine
%D 2012
%I Dove Medical Press
%R http://dx.doi.org/10.2147/OAJSM.S30962
%X ne responses, upper respiratory illness symptoms, and load changes in young athletes during the preparatory period of the training periodization Original Research (1632) Total Article Views Authors: Brunelli DT, Borin JP, Rodrigues A, Bonganha V, Prestes J, Montagner PC, Cavaglieri CR Published Date June 2012 Volume 2012:3 Pages 43 - 49 DOI: http://dx.doi.org/10.2147/OAJSM.S30962 Received: 17 February 2012 Accepted: 09 March 2012 Published: 20 June 2012 Diego Trevisan Brunelli,1 Jo o Paulo Borin,1 Ariel Rodrigues,1 Val¨¦ria Bonganha,1 Jonato Prestes,2 Paulo C¨¦sar Montagner,1 Cl¨¢udia Regina Cavaglieri1 1Faculty of Physical Education, University of Campinas (UNICAMP), Campinas, S o Paulo, Brazil; 2Graduate Program of Physical Education and Health, Catholic University of Brasilia, Brasilia, Distrito Federal, Brazil Objective: The aim of this study was to investigate the immunological responses and the association between variation in exercise load and self-reported occurrence of upper respiratory illness (URI) symptoms in young basketball athletes. Materials and methods: The sample was composed of twelve young male athletes aged 12.7 ¡À 0.6 years, with a height of 170 ¡À 10 cm, body mass of 57.6 ¡À 12.6 kg, and fat-free mass of 18.7 ¡À 5.9%. Daily training and occurrences of URI symptoms were recorded. Blood samples were collected at baseline (M1) and after 8 weeks (M2) of the preparatory period of periodization training to measure total and differential leukocyte counts, serum interleukin-6 (IL-6), and tumor necrosis factor-¦Á (TNF-¦Á). Results: There was a significant decrease in monocytes at M2 compared to M1 (P = 0.004). There were no significant alterations in total leukocytes (P = 0.07), neutrophils (P = 0.07), or lymphocytes (P = 0.09). No significant changes in plasma concentrations of TNF-¦Á (P = 0.30) or IL-6 (P = 0.90) were found. The weekly load from week 6 was higher when compared with weeks 1, 2, 4, and 8 (P < 0.05), and week 8 was the lowest when compared with week 5 (P < 0.05). Self-reported URI incidences were highest at weeks 1 and 2. Conclusion: Variations in weekly training load during the preparatory period were not correlated with changes in self-reported occurrence of URI incidences, suggesting that young athletes may have an attenuated response to exercise-induced perturbations to the immune system.
%K immune system
%K upper respiratory illness
%K young athletes
%K cytokines
%U https://www.dovepress.com/immune-responses-upper-respiratory-illness-symptoms-and-load-changes-i-peer-reviewed-article-OAJSM