INTRODUCTION: The purpose of the study was to determine the internal and external load of 2 popular drills used in soccer training. Specifically, the study examined a conditioned soccer game involving the ball possession time known as rondo and the small-sided game (SSG) drills. METHODS: Seventeen professional male football players (age =27.5 ± 5 years; weight 73.48± 7.02 kg; body fat% 9.85± 3.64; VO2max 58.11±5.53 ml/kg/min) participated in this study. The data were collected using the Wimu Pro device (RealtrackSystems, Almería, Spain) during the annual training of the soccer players. The data analysis included comparing the average of 10 SSG versus the average of 10 rondos. The internal load variables examined was the max heart rate (HRmax) and the average Hr (AHr). The variables examined denoting the external load were: total distance(m), explosive distance(m), number of accelerations, number of decelerations, maximum speed(km/h), average speed(km/h) and metabolic power (W/kg). RESULTS: Results were analyzed using a mixed ANOVA design to compare the mean differences between groups (playing positional differences) and the within-subjects differences in the drills as mentioned earlier internal and external load parameters. The results demonstrated that the playing position had no significant effect on either the internal or the external load parameters. Additionally, SSG resulted in higher external load in all the parameters above except the number of accelerations and decelerations that, in turn, were significantly higher (p< 0.05) in rondos. The internal load parameters were significantly higher (p< 0.05) in SSG. CONCLUSION: Using technology, fitness coaches can now identify the physical demands of soccer-specific drills. The findings of this study demonstrated the difference in 2 popular drills in soccer. Fitness coaches may use the results of this investigation to develop exercise regimens targeting the bioenergetics systems of their soccer players accurately.
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