Just did a stress E.C.G. in Australia last week, The Cardiologist who is also the A.M.E. said that the target pulse is 90% of your max ( 220 minus age x .9), the protocol is normally an 11 minute routine at a fast walking pace with increasing gradient throughout, this is normally enough to bring your pulse up to the required rate, low resting pulse rates only become an issue below 50b.p.m......