after a minutes rest we carried on at 3 minutes my oxygen went from 100 back down to 84 and heart rate
went to 146. When returning to test
, my heart rate
dropped to 44 and my oxygen level went to 96.This was not a strenuous test just a walking test, I have had a problem with breathlessness and fast heart rate when i do little exertion ie:- walking up stairs for around 10 months now,kept complaining to my gp who was not remotely interested.