Comparative study of some physiological variables before and after an Aerobic Effort by Junior Football players at Mosul Youth Center

. . (12) ( ) : . . The hypothesis set fourth by the researcher was that significant differences exist between systolic and diastolic blood pressure and rate of pulse before and after anaerobic stress.The researcher adopted the descriptive method appropriate for the study. The study sample consisted of (12) amateur football players from Mosul Youth football Center. The researcher collected the data and statistically analyzed them using various statistical tools including the arithmetic mean, standard deviation, and t-test of the differences of correlated samples .Stemming from the results of the study the researcher concluded that significant differences exist between systolic and diastolic blood pressure and rate of pulse before and after anaerobic stress in favor for the post experiment tests.One of the recommendations concluded by the researcher was that trainers should pay attention and consider energy producing systems according to the age of players when devising training programs.