reed wrote:
The Intelligence wrote:
Two-thirds? Implying the more intense running made up 1/3? That is rather different from the commonly accepted 90%/10% (or even 80%/20%) 'intensity rule', no?
I noticed that too. Wondering if that had to do with the way they gathered data. If you included the mileage from warmup/cooldown of a workout day and just call all that "hard" then it might come to 30/70 instead of ~15/~85. for example, I don't separate warmups/cooldowns on Strava and if you mark a run as a workout vs a general easy run, you could add them up like that and have skewed numbers. they could also be counting long runs as quality training no matter the pace.
I also think that it matters what type of runner you are looking at. On page 2, they say they looked at 5000m ,10000m, half marathon, and marathon runners. If you broke out the individual groups you may see differences. For example, Kenyans marathoners do fast runs of 30 km. That can account for ~19% of your mileage at 160 km to ~14% at 210 km. And that's one session. Flip to 5000m, and they are heavier in intervals and short intervals.
Plus trying to find correlation among the different groups will cause the data to skew in different ways/pick up the effects of other variables that aren't accounted for.