Thanks for posting your query.
As you are performing exercises regularly, because of increased vagal effect heart rate
remains on the lower side. This is a natural phenomenon.
When a person performs exercise or brisk walking, body needs extra oxygen
supply and heart starts pumping blood at higher rate to fulfill body increased oxygen demand; thats why heart rate is increased during exercise and it should also be considered as normal phenomenon.
Pain on left elbow appears to be due to tennis elbow
. Exaggerated use of forearm muscles may cause tennis elbow.
You should consult with orthopedic surgeon and should go for x ray
of affected elbow.
You should give rest to the affected elbow.
As such there is no correlation between elbow pain and heart.
Dr. Mayank Bhargava