IntroductionThe continuous practice of physical exercise has been shown to have positive effects on various metabolic functions such as cardiovascular capacity, pulmonary ventilation, secretion of certain hormones, platelets function and coagulation, renal function, etc.1,2 as well as being associated with a decrease in chronic non-contagious diseases such as diabetes, cardiovascular diseases and respiratory diseases. 3,4 But in the last decades, physical exercise has been linked to improvements in brain structures, which leads to an improvement in cognitive functions such as attention, memory, planning, inhibition, etc. 5 This last situation has allowed establishing a relation between the practice of physical exercise and the academic performance.
6−8The academic performance corresponds to a system that measures the achievements and the construction of knowledge in the students. In many educational systems this concept is often associated with a rating scale (1 to 10, 1.0 to 7.0, 0 to 100, etc.) with an approval value (for example, on a scale of 1 to 10, a value of 6 indicates the student's approval). Artunduaga 9 establishes the importance of demographic variables (age, sex, work, etc.), cognitive (abilities, intelligence, etc.) and attitudinal variables (interest, motivation, self-concept, etc.). For its part, Barahona 10 shows that variables such as gender, conformity to studied area and qualifications in verbal and mathematical tests, are excellent predictors of general academic performance. Other authors such as Pérez & Castejón 11 establish that verbal self-concept and verbal fluency are the best predictors of language performance, whereas numerical aptitude and mathematical self-concept better predict mathematical outcomes. Finally, Tejedor 12 establishes gender, age, personality, intelligence, motivation, study habits, teaching methods, evaluation strategies, parental studies, etc., as representing important elements that can determine academic performance.Most models that account for factors influencing qualifications include cognitive variables such as attention, memory and executive functions. 13,14 In addition, numerous studies establish the relationship between practicing physical exercise and cognitive function improvement.15−18 This fact allows establishing a relation between the practice of physical exercise, the improvement of cognitive functions and the increase of the academic performance of the students. On the other hand, an investigation of Beck et al. 21 applied a 6-week intervention to 165 Danish children (7,5± 0,02 years old) where he associated motor work with performance in mathematics. The control group received conventional math classes, the intervention group 1 (G1) received a math class integrated with gross motor movements and intervention group 2 (G2) received an integrated math class with fine motor movements. The children were examined before, immediately after and 8 weeks after the intervention. It was used a standardized mathematical test to evaluate mathematical performan...