Paucity of studies probing the effect of different exercise parameters impedes finite conclusions in this regard.

And there's a cost to getting an ADHD child to consistently exercise. Its can be challenging to do anything for any duration, regularly. Lets not discount the parental effort for this to succeed. Lets not throw this at parents as another thing they should all be doing, without more than very-qualified evidence. There's enough things to make ADHD parents feel guilty about already.