A member asked:

Regular cyclist (100km/wk),45yrs old.comfortably maintain 165 bpm for over 20-30 min.max bpm 177.resting pulse @ 72 -77.feel fine.am i over exerting?

A doctor has provided 1 answer
Dr. Ira Friedlander answered

Specializes in Cardiac Electrophysiology

Yes: Ideally you would like to maintain your HR sustained for 20 min at 149 BPM. That is 85% of maximal predicted. You are unlikely to do harm but there is no advantage to maintaining at 165.

Answered 8/12/2016

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