Does it matter? The whole point of flies is to achieve maximum velocity to achieve a change to central nervous system firing.
On the one hand, footwear should not change the quality of your run. In other words, the output of your training will be unaffected by running in trainers on pavement, however,
Running in spikes is faster than running in flats, so you may not achieve absolute maximum velocity which means you won’t achieve the maximum training effect you would on a track..
But if your only opportunity is to run flies on the pavement in flats, then do this as opposed to not doing flies.
Either way, the difference in times is irrelevant isn’t it? They just arent like for like comparisons.
