Sorry guys, but unles you have a superb treadmill it won't be sprinting, it "can" be a difficult session and very useful for conditioning
Benefits of the incline are for knee lift your forced to work a little harder to get you foot contact on the platform in front of you, this will fatigue you more and get you blowing out ya ass a little faster then normal.
For a conditioning session I have my guys very early winter training do 30 seconds on and 30 seconds off and that is literal
Bump the treadmill as fast as it can go. Anything less then 15mph is not worth it IMO. Run for 30 sec and then literally but safely jump your legs to the side. And then jump back on after 30 at full speed repeat until dead
These kinda sessions are anaerobic threshold sessions ( you won't ever go fast enough on a commercial treadmill, to get the "sprint" benefits)
Remember the attractive looking muscles are the strong powerful ones and they need that maximum stress on short bursts to really get firing.
Treadmill sessions are good for conditioning and mitochondrial development and useful when the weather is just too damn much
Nothing replaces a sprint session!
