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.