Morning. Newbie to thread alert. I've spent a couple of days back reading the first 30 pages and then random pages after that to get an idea of the thread. I have also read the original Hadd PDF doc as recommended by Philpub on page 1 of this thread.
A brief background: I haven't run a marathon this year as I was injured before VLM due to reintroducing cycling without considering it's impact on running. A pity as 4 days before the injury I did manage a decent pb HM or 81.xx mins. After a summer focusing on regaining fitness quickly I traded in my aerobic base for speed work, which soon got me a 5k pb and back within seconds of my 10k pb, but after a couple of months became mentally stale and didn't have the wisdom to back off, resulting in a couple of months of sporadic running.
With VLM a target (P&D starts mid Dec) 2 weeks ago I managed to get some motivation back and have been focusing on running 45min - 2hrs all between 70-75%max (146bpm) as per Hadd. However, from reading this, I am now wondering if I have been miscalculating my HRmax all these years.
When a racing cyclist I used to do max tests, which would come up in the mid 190s. Although I have aged 10 years since (now almost a vet) I have used the same figure - thinking that running HR is generally 10 bpm higher than cycling HR - so will componsate the 10bpm drop due to age.
Although I know of the 5x hill reps and 2x800m MaxHR tests, I have always thought it best to go by the HRs I have in measured repeatedly in races:
My Ave HR for 5k = 175, 10k = 173, HM = 171, Marathon = 161.
Question: With this data - am I over estimating my Max HR at 195bpm? If so, 75% shouldn't be 146bpm and I should be running much slower (a common issue for Hadd newbies I understand).
Sorry about long winded introduction. Advice gratefully received.