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 and
moderate intensities football specific circuit training on selected Hematological Variables among Under-17
football 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) footballers
were taken as a sample size. The subjects were at the age of 16.15+.71 years, height of 1.62+.54 meter and
weight of 50.67+3.71. These subjects were distributed into the experimental groups of high intensity circuit
training group (HICT group) N1=20, moderate intensity circuit training group(MICT group)N2=20and
control group (CG) N=20. Only HICT group and MICT group were engaged in high intensity circuit training
and moderate intensity circuit training for sixteen weeks respectively. The selected hematological parameters
were Red blood cells (RBC), White blood cells (WBC), Hemoglobin (Hgb), Hematocrit (HCT), Mean cell
volume (MCV) and Mean cell hemoglobin (MCH). The data was collected from cubital vein as per the guide
for blood specimen collection procedure at both pre and post-tests. The data was analyzed using ANCOVA
and 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 control
group 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 in
HCT and MCH with (-3.175, P=.000) and (-1.344, P=.000) respectively. Moderate intensity circuit training
Group 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 significant
increase 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 than
the Moderate intensity circuit training Group with (2.892, P=.001).
Conclusion: From our finding we conclude that different intensity of training brings different changes in
different Hematological parameters and similar changes in some variables as well. Thus the circuit training intensity should be considered in the coaching
plan for junior players.