Cardiorespiratory fitness is one of the main elements of physical fitness and health .The VO2 max can be understood as the capacity of the body to capture the atmosphere of oxygen, transport it into
the bloodstream with the help of hemoglobin and use it by cells through cellular respiration. The aim of this study was to determine the cardiovascular functional capacity of elementary school
students II and East of the state schools in Carmo do Cajuru - MG. Treated an epidemiological study, cross-sectional .
The sampling process was stratified by age ( from 13 to 18 years) , sex (male and female) and students with low or high physical readiness , with the participation of 154 , 70 boys and 84
girls , schools two schools of City. All guardians signed informed consent.The study was approved by the Ethics Committee of FUNEDI / UEMG. In data collection, all students completed a based anamnesis
in Readiness Questionnaire for Physical Activity (PAR-Q) with 7 closed questions, then underwent completion of the Cooper test in which students come to school court, previously marked, as far as
possible in 12 minutes during physical education classes. In the statistical analysis, means and standard deviations were used, variânciatwo-way analysis with post-hoc Tukey and chi-square test (p
The results showed that the cardiorespiratory fitness of the boys is from 6 to 10 % higher than the girls, varying according to age. Regarding the age of the children, students 13 years were those
with the worst results compared to the other ages (X = 17.05) and 14 years were the ones who had higher mean (X = 24.98). The average of students aged 15 and 18 approached (x = 24.31, 23.03 x = x =
23.34 and x = 23.84). Regarding the girls, the students of 17 and 18 showed the worst results compared to the other ages (x = 9.7 and x = 6.5), since the 14 years were those that had higher mean (x =
23, 4). The average among students aged 14 and 15 approached (x = 23.4 and x = 22.1). However, it was possible to notice a significant difference between the ages of 16 ( x = 18.8 ) and 17 ( x = 9.7 )
. Another important finding was that 28 % of boys and 46 % of the participating girls showed cardiorespiratory fitness below recommended criteria for health , 28 % and 46 % , respectively. In relation
to the classification criteria related to readiness for physical activity , it was observed that 36 % of boys and 38 % of girls did not meet the recommended criteria
Considering the results obtained by the Cooper tests and applied questionnaire in schools , there is the importance and the urgency to create action plans to stimulate the practice of physical
activity and health care for children and adolescents in the city .