95% HR = 90% FTP??

obizzle
obizzle Posts: 28
Hi All

I'm just getting back into cycling after a two year break, and picked up the latest issue of Cycling Plus. On page 155 there's an areticle called "Hit Your Sweet Spot". In the article, some guy called Frank Overton states the following:
The sweet spot relates to a balance in the intensity and volume of your training. It lies between high zone 3 and low zone 4 at around 90% threshold power. If you don't have a power meter this roughly equates to 95% heart rate, or you can consider this level "medium hard"

Is it me or is that completely wrong. Even ignoring power, 95% heart rate is no way medium hard. And 90% threshold power is something you should be able to keep up for 2hrs+. So according to him that's the same as 95% heart rate.

Am I missing something?

Cheers

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