Background and Study Aim. The purpose of this study was to examine the effect of metabolic stress created by 6-week football training applied in the pre-season period on circulation and hematological parameters of well-trained male football players. Material and Methods. Fourteen male football players who competed in the U19 category of a football team in Turkish Football Super League participated in the study voluntarily. In the study, players’ systolic - diastolic blood pressures and resting heart rates were measured and their blood samples were taken before and after the 6-week training period. Laboratory analysis was made to determine counts and concentration percentage of erythrocyte, leukocyte, and platelet sub-parameters. Wilcoxon Signed-Rank test was performed to determine the difference between pre and post measurements. Results. Our findings indicated that baseline mean values of lymphocyte, mean cell hemoglobin, and mean corpuscular hemoglobin concentration were signific...

Hematological Parameters of Elite Soccer Players during the Competitive Period. JEPonline 2013;16(5):68-76. The purpose of this study was to describe and compare hematologically elite football players during the competitive period according to playing positions and determines the prevalence of anemia. The subjects consisted of 38 professional footballers from a professional club in the National Football League First Division of Brazil. Six groups were formed for hematological comparison: (a) goalkeepers; (b) side defenders; (c) central defenders; (d) central midfielders; (e) side midfielders; and (f) attackers. Data collection began at the start of competition. The anthropometric, hematological, and VO 2 max measures were carried out on the first day. To determine hematological parameters, fasting blood samples were taken from the cubital vein. The One-Way analysis of variance and the Bonferroni adjustment for multiple comparisons were used for statistical comparison between the footballers of different playing positions. No statistically significant differences were found among the playing positions in all three hematological parameters (red blood cell count, hematocrit, and hemoglobin). All players maintained strict compliance of balanced diets.

Aim: Acute intensive physical exercise induce the hematological changes in circulation. However, the effect of football training on hematological and biochemical parameters during the football season is still limited. The present study aimed to investigate the effects of routine football training on physiological parametrs namely: hematological, biochemical and iron levels during the pre and competitive match season. Materials and Methods: Amateur football players (n=15) participated in this study. The blood samples were collected and physical performance parameters assesses twice during pre and end of the first league between August and December. The players also performed Cooper run test, 30 m sprint tests. In addition, the hematological and biochemical parameters were analyzed by taking blood samples during pre and end of the first league. Results: Football training resulted in significant decreased erythrocyte (RBC) concentration (p<0.001), hemoglobin level (Hb) (p<0.01), ...

Introduction: Soccer players may experience hematological changes that could be detrimental to their health status. In addition, inadequate body composition may impair performance. Objective: To assess body composition and hematological changes over a year in soccer players. Methods: A retrospective observational study was conducted. Age, weight, height, body composition, blood count, serum iron, serum ferritin, serum transferrin and total iron binding capacity data were collected from the athletes’ medical records in the months of January, May and August of 2015 and January of 2016. Body mass index was also calculated. For the statistical analyses, the Anova and post-hoc Tukey’s post-hoc tests were used for the quantitative variables and the Chi-square test for the qualitative variables. The significance level adopted was p<0.05. Results: Data were evaluated for 51 athletes with a mean age of 23.53 ± 3.11 years, 77.10 ± 6.56 kg, 1.80 ± 0.07 and 15.6 ± 2.89% body fat (BF). We obs...

This study was conducted in order to determine the influence of five-day handball competitions on hematological levels of male handball players. 12 elite male handball players with an average age of 22.16±1.85 years participated in this study on voluntary basis. Physical measurements including body height, body weight, body-mass index and body fat percentages and hematological levels of the handball players were analyzed before (BC) and after the competitions (AC). In order to determine hematological levels, blood samples with 5 ml EDTA (Ethylenediaminetetraacetic acid) were taken from the forearm ante-cubital area in line with hygiene rules before and after competitions, and erythrocyte, leucocytes and blood platelet parameters were analyzed in laboratory with using auto-analyzers. Measurement results were presented as average and standard deviation. Student T-test for dependant samples was used in order to make a comparison between BC and AC values. SPSS 13.0 Package software was used for data evaluation. P<0.05 value was considered to be significant. As a result of the study, the decrease in BC and AC values for body weight, body-mass index, body fat percentages, MCV, MCH, CH and LY and the increase in RBC and NE values were found significant. Conclusively, erythrocyte, leucocytes and blood platelet levels display different behaviors vis-à-vis acute competition-like exercises.