OK, iPhone spirit level application used in anger for first time ever.
To be fair to the running machine I use it doesn't have degrees next to the incline, it's just an incline setting (but see below).
It goes up to 12 which, according to the spirit level app, was only 8
o. (Intermediate incline settings matched proportionally.)
But, I think it does assume it is degrees because I remember it telling me I'd climbed 55m after my 30 minutes at 10.5kph at an incline setting of 1. (30mins at 10.5kph = 5.25km, plus a bit more for warm up and cool down, and 1% of that is ~55m).
So according to this at 1 degree Greenbank is ruining harder than the equivalent on (flat, smooth etc) road.
So a setting of 1 (which it thinks is 1
o) is actually closer to 0.7
o (8/12 = 0.6666...), combined with the fact that my footfalls are only about 1m apart (rather than nearer 2m apart on the actual belt) means that is more like 0.5
o.
I should really be running at a setting of 2 (so 1.4
o) which would be trimmed down to something under 1
o of real climbing given 'short strides' and almost perfectly match where it should be on the table NikW posted to replicate the missing air resistance of running at ~6.5mph (10.5kph) which was somewhere between 0
o and 1
o of real incline.
This, of course, assumes that the chart hasn't already taken this into account.