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: Athletic hea syndrome (AHS) is a non-pathological condition commonly seen in spos medicine in which the human hea is enlarged, and the resting hea rate is lower than normal. The athlete's hea is associated with physiological remodeling as a consequence of repetitive cardiac loading . Ref Harrison 20th edition pg 1421