Poster Session III: Sports cardiology

P398 Blood pressure response to exercise in young athletes associated with classification of sports N M Nicole MPanhuyzen-Goedkoop, R Terink, JLRM Smeets Radboud University Nijmegen Medical Centre, Heartlung Centre, Nijmegen, Netherlands, Sports Medical Center Papendal, Arnhem, Netherlands Topic: Sports cardiology Purpose: hemodynamic responses to maximal exercise testing cover the general population. Bloodpressure (BP) responses in athletes are reported at rest and during ambulatory BP monitoring. BP responses associated with different classes of sports are lacking. Purpose: To determine BP responses to exercise related to different classes of sports in young athletes (=35yr). Methods: Young athletes who had pre-participation cardiovascular screening, maximal exerciseECG, and were engaged in regular physical training and competition > previous 6 month were included in this retrospective study during 2000-2008. Bicycle exercise protocol until exertion, 75 watt (men) or 50 watt (women) during 4min, increment 25 watt / 2 min. BP and ECG at rest, each increment, and recovery phase was measured manually. Results: 475 athletes were included, 308 men and 167 women, age 9-35yr (mean 24yr). Number of training hours 1-30/wk. Mean resting BP was 122 mmHg systolic and 73.5 mmHg diastolic. Mean resting heart rate was 61.7 bpm on ECG. Mean BP responses to maximal exertion in different classes of sports (mmHg) are in table. Conclusion: this is the first study that demonstrates different BP responses associated with different classes of sports. The highest systolic and diastolic BP responses were recorded in moderate static-low dynamic sports. The lowest diastolic BP responses were recorded in moderate static-high dynamic sports. Values above the criteria for hypertension on exertion were in moderate static-low dynamic and high static-low dynamic classes of sports. Further studies are warranted to define ‘‘normal’’ blood pressure response to exercise in different classes of sports