Exercise and Academics

For those who are interested, here's one of the studies:
Grissom, James (2005), Physical Fitness and Academic Achievement, Journal of Exercise Physiology online, v8, n1

Grissom evaluated the relationship between physical fitness and academic achievement. TO do so, FITNESSGRAM physical fitness test scores were compared to reading and mathematics scores on the standardized achievement tests. Subjects included all 5th, 7th and 9th grade students in California public schools in 2002 for whom there was a complete set of data. The researcher found that as overall fitness scores improved, mean achievement score also improved. The relationship between fitness and academic achievement appeared to be stronger for females than males and stronger for higher socio-economic status (SES) than than SES students. (Paragraph written by the meeting presenters - I have not read the executive summary.

Now THAT's the way to run a study. Use all the students. Try to find out if gender or socio-economic status plays a commanding role, a large role, a partial role or no role at all. Don't claim your one study has all the answers or is somehow "extremely important."