Submitted by Dr T on September 5, 2011 – 4:01pm
One of the most common arrhythmias is a sinus arrhythmia and involves a heart rate change with inspiration/expiration, especially in younger people.
You can read more here:
Post-exercise transient sinus arrhythmia has no clinical significance unless it is an Inappropriate Sinus Tachycardia (IST).
Hope this helps,