The great NFL practice conundrum: How much should you train to avoid injury?

(American Statistical Association) Researchers from Emory's Rollins School of Public Health studied whether there were any sudden changes in injuries after the NSF implemented practice restrictions in 2011, while adjusting for the fact that more attention has been paid to NFL injuries over time, which means the number of reported injuries had been going up even before the new CBA. In a nutshell, we they didn't seem to go up or down on balance.