This will change over time, at which point exercise heart rate should reach very near (or even exceed) the heart rate readings you observe in running.
(This; will change; T:over time) (the heart rate readings; observe; you) Context(the heart rate readings observe,List([103, 138))):(you; in running; )
the heart rate readings observe,List([103, 138))
This the heart rate readings you
will change observe in running
T:over time
you