The Effect of High Intensities and Moderate Intensities Football Specific Circuit Training on Selected Hematological Variables among Under-17 Football Players

Abstract

Objective: The purpose of the study was to investigate the comparative effect of high intensities andmoderate intensities football specific circuit training on selected Hematological Variables among Under-17football players in Ethiopia.Method: Randomized control group pretest-posttest design was implemented for this experimental study.For the purpose of this study from a total of ninety (90) football players of Adigrat city sixty (60) footballerswere taken as a sample size. The subjects were at the age of 16.15+.71 years, height of 1.62+.54 meter andweight of 50.67+3.71. These subjects were distributed into the experimental groups of high intensity circuittraining group (HICT group) N1=20, moderate intensity circuit training group(MICT group)N2=20andcontrol group (CG) N=20. Only HICT group and MICT group were engaged in high intensity circuit trainingand moderate intensity circuit training for sixteen weeks respectively. The selected hematological parameterswere Red blood cells (RBC), White blood cells (WBC), Hemoglobin (Hgb), Hematocrit (HCT), Mean cellvolume (MCV) and Mean cell hemoglobin (MCH). The data was collected from cubital vein as per the guidefor blood specimen collection procedure at both pre and post-tests. The data was analyzed using ANCOVAand post hoc test for paired mean comparison when significant difference exists.Result: Our finding indicated that the High intensity circuit training group increased significantly in RBC,WBC, Hgb and MCV than control group with (519, P=.000), (91.595, P=.000), (.903, P=.019) and (5.668,P=.000) respectively. Moderate intensity circuit training Group increased significantly from the controlgroup on RBC, WBC, Hgb and MCV with a mean difference of (.746, P=.000), (1.894, P=.000), (1.238,P=.000) and (2.777, P=.000) respectively. The High intensity circuit training group decreased significantly inHCT and MCH with (-3.175, P=.000) and (-1.344, P=.000) respectively. Moderate intensity circuit trainingGroup decreased significantly from the control group on HCT and MCH with (-4.310, P=.000) and (-2.076,P=.000) respectively. In addition to this the Moderate intensity circuit training Group showed significantincrease in RBC and decrease in MCH from High intensity circuit training group with (.227, P=0.014) and(.732, P=.032) respectively. The High intensity circuit training group increased significantly in MCV thanthe Moderate intensity circuit training Group with (2.892, P=.001).Conclusion: From our finding we conclude that different intensity of training brings different changes indifferent Hematological parameters and similar changes in some variables as well. Thus the circuit training intensity should be considered in the coachingplan for junior players.