Exercise and ADHD

I tend to think of some level of ADHD as "normal", and I've always associated it with the need for kids to run around before sitting. I find this disturbing: Exercise may lead to better school performance for kids with ADHD

drugs have proven largely effective in treating many of the 2.5 million school-aged American children with ADHD,
In the study, Pontifex and colleagues asked 40 children aged 8 to 10, half of whom had ADHD, to spend 20 minutes either walking briskly on a treadmill or reading while seated. The children then took a brief reading comprehension and math exam similar to longer standardized tests. They also played a simple computer game in which they had to ignore visual stimuli to quickly determine which direction a cartoon fish was swimming.
The results showed all of the children performed better on both tests after exercising.
"To date there really isn't a whole lot of evidence that schools can pull from to justify why these physical education programs should be in existence," he said. "So what we're trying to do is target our research to provide that type of evidence."

Now, why would that be disturbing? Very simple: we seem to be putting a couple of million kids on medication without doing that research first. No, surely that's not what it means. This has to be a misrepresentation.
Or then again, maybe not.