This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
Athletic syndrome is characterized by - 
Select and explain. 
A. Increased amplitude of QRS, B. Tachycardia, C. Decreased QT interval, D. U-waves
A: Increased amplitude of QRS
Answer: A: Increased amplitude of QRS 
Explanation: increased amplitude of QRS complex is a feature of athletes hea they have bradycardia decreased QT interval and U waves are not seen Ref Harrison 20th edition pg 1435