@ARTICLE{Tayebi, author = {Tayebi, M. and Agha Alinejad, H. and Kiadaliri, K. and Ghorbanalizadeh Ghaziani, F. and }, title = {Assessment of CBC in physical activity and sport: a brief review}, volume = {7}, number = {4}, abstract ={Abstract Background and Objectives Sport hematology is a new branch in the field of exercise physiology with a history of not more than 30 years in the world in Iran, it is even shorter with just a brief literature available. Thus, the aim of this study is to make a brief and accurate review of the previous studies about “Complete Blood cells Count (CBC)” in sport. Materials and Methods In this study, a brief review on 81 articles published either in Persian or English was done. The sources were either local (2 books and 16 articles) or foreign (10 Wikipedia texts and 38 articles) publications. Results The results show that an acute exercise causes an increase in red blood cells destruction and a transient sport anemia due to hemolysis generated by mechanical impact, oxidative stress, and hematuria. Moreover, an increase in leukocytic and thrombocytic indexes was observed after a single session of physical exercise the increase is due to hormonal changes, elevated blood flow, and escape of cells from spleen, bone marrow, and lungs. Despite the above changes, adaptation to regular physical training may not be altered however, any little alteration would be attributed to plasma volume changes which should be considered in interpretation. Conclusions Physical activity and exercise can seriously change CBC indexes however, the impact of such changes can be highly reduced through appropriate recovery measures followed by getting back to regular training and the related adaptation schedule. Key words: Erythrocyte, Leukocytes, Thrombocytes, Blood count, Physical activity, Sports }, URL = {http://bloodjournal.ir/article-1-441-en.html}, eprint = {http://bloodjournal.ir/article-1-441-en.pdf}, journal = {The Scientific Journal of Iranian Blood Transfusion Organization}, doi = {}, year = {2011} }