The Effect of Morning Aerobic Exercise on Some Hematological Parameters in Young, Active Males

Research in Exercise and Sports Medicine

دوره 4، شماره 1، بهمن 2013، صفحه 23-28   

نوع مقاله: Original Article

چکیده

Purpose: This study is to investigate the impact of an eight-week morning aerobic training on some 
hematological parameters in young, active males.
Material and Methods: 26 male, university students without any previous smoking experiences or regular 
exercise programs (age, 19/23  1/07 years and BMI, 22/53  5 kg/m2
) were randomly selected and divided 
into two groups: control and exercise. The exercise group (13 students) did an 8-week aerobic training three 
times a week with the intensity of 55% to 75% of maximum heart rate but the control group just (13 students) 
did their everyday activities. Blood samples were collected before the first session of aerobic training and after 
the last session, at a specific time (7:00 a.m.) from both control and exercise group. The second blood samples 
were collected after the heart rate of the exercise group returned to its resting values and were used to examine 
the following parameters: clotting and bleeding times, amount of fibrinogen, hemoglobin, hematocrit and 
number of red and white blood cells and platelets. A timer, a fibrinogen kit and a cell counter were used in this 
phase. Student t-test and paired T-test were run to analyze the obtained results. The significance level was set 
at P= 0.05.
Results: The findings showed that during an 8 – week morning exercise the number of red blood cells, 
hemoglobin levels, and hemotocrit percentage increased. Fibrinogen levels and prothrombin formation time 
have also increased significantly (P≤0.05), while the bleeding times and the number of platelets decreased 
significantly.
Discussion and Conclusion: The findings of this study reveal that an eight – week morning aerobic training 
does not have any negative effect on hematological parameters of young , active males with healthy metabolic, 
kidney and cardiorespriatory systems

کلیدواژه‌ها

Hematological factors؛ Morning aerobic training؛ Active males