Not technically true, someone with a naturally lower HR may struggle to get it very high as they just physically can't even with fitness & training.I doubt your HR monitoring is accurate if you can rest at 40-45 with only 175 ish max. Sounds like it's under reading. Someone who is 35-40 with that kind of resting rate should easily be able to top 180+ if not more. Worth checking.
My max HR is 183 currently, haven't checked my resting recently but I've hit 183 a few times when on rides.I doubt your HR monitoring is accurate if you can rest at 40-45 with only 175 ish max. Sounds like it's under reading. Someone who is 35-40 with that kind of resting rate should easily be able to top 180+ if not more. Worth checking.
I'm 38 and my resting around 50-55. Normal riding HR around 140-160 with sustainable threshold at around 165-170.
170 used to be blow up territory soon after starting riding (age 32-33?) but after gaining fitness and through lots of Zwift riding I'd now call it top of my threshold (as I can sustain it) with blow up now being over 190. Over 180 hurts but recover from it ok (while able to still sustain power). I'll see it quite regularly when sprinting on Zwift, not really outside except on hard climbs when I'm really pushing.
I used to think my max HR was around 185, then Zwift happened. It's now somewhere just over 190bpm. Do feel sick when going that deep though!
Not technically true, someone with a naturally lower HR may struggle to get it very high as they just physically can't even with fitness & training.
You'll see many pro riders having a naturally lower HR yet able to hit high levels. Froome has a really low resting & riding HR (but strips his data from races so hard to judge his max). I've seen Jon Mould hit over 200 and I'm sure I've seen Tom Pidcock do the same.
I'm not measuring my fitness based on the max HR, it's more in reponse to the post above which suggested my HR monitor might be mis-reading as my resting HR is 40-45 and my max HR was only 178 - it's now 187+ which in itself is a measure of fitness, no? Your Max HR increases the fitter you are, up to your hereditary maximum.What are you trying to achieve by using a variable metric (heart rate) to guage presumably fitness or intensity?
Something absolute, such as power, would be far more useful if available, no?
my max HR was only 178 - it's now 187+ which in itself is a measure of fitness, no?