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- Title
Corrida em ambiente quente altera o perfil leucocitário de sujeitos treinados saudáveis.
- Authors
Silva-Filho, Antonio Carlos; Dias, Carlos José; Araújo Costa, Herikson; Teixeira Mostarda, Cristiano; Navarro, Francisco; Mário Sevílio Jr.
- Abstract
Aims: To assess the effects of an outdoor race of 15 km in a hot environment on leukocyte kinetics in healthy trained men. Methods: The sample consisted of 14 men who participated in a recreational race group. Volunteers who said they were able to run a minimum distance of 15 km, were not taking any immunosuppressants, and had no infectious disease were included in the study. The exclusion criteria were the following: hypertension at rest before the race, history of musculoskeletal, metabolic and/or cardiovascular diseases, and failure to finish the race. Venous blood samples were collected before and after the race for determination of hematocrit levels and immune cell count by immunocytochemistry. Results: An increase in total leukocyte and neutrophil count was observed after the race (9.31±2.4x10³ cells/uL and 7.64±3.4x10³ cells/uL, respectively) compared to the pre-race period (5.52±0.2x10³ cells/uL and 2.90±0.6x10³cells/uL, respectively), (p<0.05). There was a decrease in lymphocyte and eosinophil count after the race (1.34±0.3x10³ and 0.36±0.2x10³ cells/uL, respectively) compared to the pre-race period (1.67±0.3x10³ and 0.22±0.1x10³ cells/uL, respectively) (p<0.05). There was no statistically significant difference in monocyte and basophil count after the race (0.45±0.1x10³ and 0.9±0.3x10³ cells/uL, respectively) compared to the pre-race period (0.40±0.08x10³ and 0.8±0.3x10³ cells/uL, respectively) (p>0.05). Conclusions: The 15-km outdoor race in a hot environment led to a typical leukocyte kinetics, resulting in leukocytosis owing to the increase in neutrophil count as well as to a decrease in lymphocyte and eosinophil count in healthy trained men. These findings shed some further light upon exercise-induced leukocytosis and may indicate the level of stress produced by exercise under extreme environmental conditions.
- Subjects
RUNNING races; HOT weather conditions; LEUCOCYTE motility
- Publication
Scientia Medica, 2016, Vol 26, Issue 1, p1
- ISSN
1806-5562
- Publication type
Article
- DOI
10.15448/1980-6108.2016.1.22380