The impact of soccer training on the immune system

• Type: Article in International Scientific Journal
• Date: 1998

Authors

Rebelo, Antonio Natal Campos (Author) FADEUP; Candeias, Jr (Author) Other; Fraga, M. M. (Author) Other; Duarte, José Alberto Ramos (Author) FADEUP; Soares, José Manuel Costa (Author) FADEUP; Magalhaes, C (Author) Other; Torrinha, J.A. (Author) Other

Journal

Title: The Journal of Sports Medicine and Physical Fitness

Vol. 38

Pages: 258-261

ISSN: 0022-4707

Publisher: EDIZIONI MINERVA MEDICA

Indexing

ISI Web of Knowledge - 21 Citations

Scopus - 28 Citations

Scientific classification

FOS: Medical and Health sciences > Health sciences

Other information

Authenticus ID: P-001-77D

Abstract (EN): Objective. The aim of this study was to evaluate whether the level of some immune markers changed in soccer players during pre-season and during playing-season. Design.,Sn observational study for one soccer season (one gear), Setting, Professional soccer players. Participants. Thirteen professional soccer players (age: 26.3+/-3.7 Sears). Measures. The effect of 11 months of soccer training sessions and matches on circulating leukocyte and lymphocyte subpopulations was investigated. Blood samples were taken before the season and also 6 weeks, 6 months and 11 months later. All samples were taken at 08:00h. Results, Total lymphocyte counts did not change in all samples. During the pre-season, however, the concentrations of some inflammatory lymphocyte subpopulations were changed: CD4CD45RA+ was elevated and CD57 and CD8CD57 showed a significant decrease (p<0.05), At the end of the competitive period, CD4 and CD8 were increased. At the end of the season there were significant changes in some immune cells: total leukocyte and neutrophil number and CD8+ cell concentration was increased compared to pre-season values and the CD4/CD8 ratio was decreased. Conclusions. The results suggest that athletes exposed to a longterm training periods can exhibit variations in some immune cells. The clinical significance of these variations requires more detailed investigation.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4