A 27-Year-Old Professional Cyclist with Palpitations on Effort / Hein Heidb??chel and Axel J.P. Urhausen -- Impaired Performance in a Master Long-Distance Runner / Fran??ois Carr?? -- A 26-Year-Old Cyclist with Syncope on Effort / Nicole M. Panhuyzen-Goedkoop and Joep L.R.M. Smeets ; A 32-Year-Old Female Soccer Player with Unexplained Syncope / A.W. Treusch, O. Oldenburg, T. Butz, A. Fr??nd, E. Oepangat, F. van Buuren, and K.-P. Mellwig -- A 23-Year-Old Top-Level Soccer Player Suffering Syncope on Effort / Nicole M. Panhuyzen-Goedkoop and Joep L.R.M. Smeets -- A 21-Year-Old Female Beach Volleyball Player with Palpitations and Pre-syncope on Effort / Nicole M. Panhuyzen-Goedkoop and Joep L.R.M. Smeets -- A 49-Year-Old Male Marathon Runner with Exercise Induced Prolonged Palpitations / Nicole M. Panhuyzen-Goedkoop and Joep L.R.M. Smeets -- A Female Cyclist with Prolonged Palpitations on Effort / Pietro Delise, Giuseppe Allocca, Nadir Sitta, Leonardo Coro', and Massimo Bolognesi -- The Girl with Systolic Murmur on the Left Sternal Border / Mats B??rjesson and Mikael Dellborg -- Elite Tennis Player with a Complete Atrio-Ventricular Block / Alessandro Biffi, Laura Fiaccarini, and Luisa Verdile -- A Young Canoeist with an Abnormal Electrocardiogram / Fernando Maria Di Paolo, Filippo M. Quattrini, Cataldo Pisicchio, Roberto Ciardo, and Antonio Pelliccia -- ECG Repolarization Abnormalities in an African Descent Athlete: Pathologic or Physiologic Finding? / John Rawlins, Peter Mills, and Sanjay Sharma -- A 16-Year-Old Female Runner with Prolonged QT Interval / Sandeep Basavarajaiah and Sanjay Sharma -- Athlete with Variable QTc Interval and Abnormal TWave Pattern / Emanuele Guerra, Filippo M. Quattrini, and Antonio Pelliccia -- Young Triathlete with Unusual ST-Segment Elevation in Precordial Leads / Luisa Verdile, Filippo M. Quattrini, Fernando Maria Di Paolo, and Antonio Pelliccia -- A 17-Year-Old Competitive Soccer Player with Pre-excitation Pattern on 12-Lead ECG / Hein Heidb??chel -- A Symptomatic Judoka withWolff-Parkinson-White Pattern / Mohamed Tahmi -- A 35-Year-Old Competitive Cyclist with Frequent Premature Ventricular Beats / Hein Heidb??chel -- An Athlete with Ischemic Pattern on Exercise ECG / Elvira DeBlasiis, Fernando Maria Di Paolo, and Antonio Pelliccia -- A 17-Year-Old National Cyclist with Exercise-Induced Ventricular Tachycardia / Axel J.P. Urhausen, Charles Delagardelle, Camille Pesch, and Hein Heidb??chel -- A 53-Year-Old Recreational Jogger with Atrial Fibrillation / Hein Heidb??chel -- Paroxysmal Atrial Fibrillation in a Professional Cyclist / Fran??ois Carr?? -- A Female Soccer Player with Unusual Fatigability and Ventricular Arrhythmia / Erik Ekker Solberg, Terje Halvorsen, Knut-Haakon Stensaeth, and Finn Hegbom -- A 38-Year-Old Marathon Runner with Tricuspid Valve Regurgitation / A.W. Treusch, O. Oldenburg, T. Butz, A. Fr??nd, E. Oepangat, F. van Buuren, and K.-P. Mellwig -- A Young Rower with an Unusual Left Ventricular Hypertrophy / Filippo M. Quattrini, Fernando Maria Di Paolo, Cataldo Pisicchio, Roberto Ciardo, and Antonio Pelliccia -- An Elite Athlete with Controversial Left Ventricular Hypertrophy / Barbara Di Giacinto, Fernando Maria Di Paolo, and Antonio Pelliccia -- A Non-compaction Cardiomyopathy or Innocent LV Trabeculation? / Cataldo Pisicchio, Filippo M. Quattrini, Fernando Maria Di Paolo, Roberto Ciardo, and Antonio Pelliccia -- A 31-Year-Old Male, Recreational Soccer Player with "Low Risk" Hypertrophic Cardiomyopathy / Pietro Delise -- Competitive Cyclist Suffering from Myocardial Infarction, Willing to Resume Competitive Sport / Mats B??rjesson -- A 32 Year-Old Male Soccer Player with Chest Trauma / Deodato Assanelli, Evasio Pasini, Federica Ettori, Silvana Archetti, and Sabrina Arondi -- Asymptomatic Cyclist with Stenosis of Left Main Coronary Artery / Deodato Assanelli, Enrico Ballardini, Evasio Pasini, Giancarlo Magri, and Sabrina Arondi -- Appendices. Appendix A: Classification of Sports ; Appendix B: Recommendations for Competitive Sport Partcipation in Athletes with Congenital Heart Diseases ; Appenix C: Recommendations for Competitive Sport Partcipation in Athletes with Valvular Diseases ; Appendix D: Recommendation for Competitive Sport Participation in Athletes with Cardiomyopathies, Myocarditis and Pericarditis ; Appendix E: Recommendation for Competitive Sport Participation in Athletes with Marfan's Syndrome ; Appendix F: Stratification of Risk to Quantify Prognosis in Patients with Systemic Hypertension ; Appendix G: Recommendation for Competitive Sport Participation in Athletes with Systemic Hypertension (and Other Risk Factors) According to the Cardiovascular Risk Profile ; Appendix H: Recommendation for Competitive Sport Participation in Athletes with Ischemic Heart Disease ; Appendix I: Recommendation for Competitive Sport Participation in Athletes with Arrhythmias and Arrhythmogenic Conditions.