High blood pressure (BP) values in adolescents are caused by a variety of risk factors. In this group, the reproducibility of resting office BP is poor due to emotional and situational factors. With adults, it is the case that exercise BP is more closely associated with cardiovascular prognosis. However, it is unclear whether exercise BP in children and adolescents has a higher prognostic relevance than resting BP. In the present study, the association of resting vs. exercise BP values with classic risk factors was compared in order to evaluate the importance of BP during exercise.