I've recently gone from sitting around 75miles/week to now 87M/week and I was wondering if anyone has any insight as to [until my body adapts fully] what kind of impact I could expect this increase in mileage to have on my splits in sessions (for example K repeats)?
ie. is it normal to see splits coming up 1-2s slower, until the body has enough time to adapt?
totally normal. anytime you up mileage, expect easy pace, cooldowns, repeats, speedwork, to drop just a bit, same with heart rate increasing. going from 75 to 87 (assuming youve done 87 before) is gonna make u a bit more tired/slow for the next week or two, but nothing to be concerned about, especially if its just 1-2 seconds
+1
yep, 1-2s is nothing. that could be a result of so many things incld the added volume. I find that my easy days get a lot slower in marathon training versus other times of the year.