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 significantly higher than posttest mean values. The mean of diastolic blood pressure and resting heart rate measured before the preseason training camp were lower than their posttest mean values (p > .05). Conclusion. It is thought that the decrease in the mean values of diastolic blood pressure and resting heart rate caused by the effect of regular training during the preseason training period, while the increase in the mean values of mean cell haemoglobin and mean corpuscular haemoglobin concentration caused by the increased oxygen demand of the metabolism during the training period.

中文翻译：

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季前足球训练对训练有素的年轻男足球运动员血液学参数的影响

背景和研究目标。这项研究的目的是研究在赛季前进行的为期6周的足球训练所产生的代谢压力对训练有素的男足球运动员的血液循环和血液学参数的影响。材料与方法。在土耳其足球超级联赛中参加U19足球队的14名男性足球运动员自愿参加了这项研究。在这项研究中，测量了运动员在6周训练前后的收缩压和舒张压以及静息心率，并采集了他们的血液样本。进行了实验室分析，以确定红细胞，白细胞和血小板亚参数的计数和浓度百分比。进行Wilcoxon Signed-Rank测试以确定前后测量之间的差异。结果。我们的发现表明，淋巴细胞，平均细胞血红蛋白和平均红细胞血红蛋白浓度的基线均值明显高于测试后的均值。季前训练营之前测得的舒张压和静息心率的平均值低于其测验后平均值（p> .05）。结论。可以认为，由于在季前训练期间定期训练的影响，舒张压和静息心率的平均值下降，而平均血红蛋白和平均红细胞血红蛋白浓度的平均值上升则是由于季节训练所致。在训练期间，新陈代谢的氧气需求增加。并且平均红细胞血红蛋白浓度明显高于测试后的平均值。季前训练营之前测得的舒张压和静息心率的平均值低于其测验后平均值（p> .05）。结论。可以认为，由于在季前训练期间定期训练的影响，舒张压和静息心率的平均值下降，而平均血红蛋白和平均红细胞血红蛋白浓度的平均值上升则是由于季节训练所致。在训练期间，新陈代谢的氧气需求增加。并且平均红细胞血红蛋白浓度明显高于测试后的平均值。季前训练营之前测得的舒张压和静息心率的平均值低于其测验后平均值（p> .05）。结论。可以认为，由于在季前训练期间定期训练的影响，舒张压和静息心率的平均值下降，而平均血红蛋白和平均红细胞血红蛋白浓度的平均值上升则是由于季节训练所致。在训练期间，新陈代谢的氧气需求增加。结论。可以认为，由于在季前训练期间定期训练的影响，舒张压和静息心率的平均值下降，而平均血红蛋白和平均红细胞血红蛋白浓度的平均值上升则是由于季节训练所致。在训练期间，新陈代谢的氧气需求增加。结论。可以认为，由于在季前训练期间定期训练的影响，舒张压和静息心率的平均值下降，而平均血红蛋白和平均红细胞血红蛋白浓度的平均值上升则是由于季节训练所致。在训练期间，新陈代谢的氧气需求增加。