Nice paper Bulldog. Of course there are some things I would have liked to have seen done a bit differently, but the trouble with research in this area, is its so difficult to get valid data. Many coaches don’t have it, and many that do won’t give it in unadulterated form.
There’s another “issue” as well, and perhaps is the one that causes most of the problems. While in the last 20 years the education of everyone having anything to do with youth baseball has improved, there are still a lot of folks who believe more of anything is better, and a lot of folks who just don’t believe that throwing something as small as a baseball could possibly cause any serious problems. Plus, there will always be those who feel their player or their kid is somehow bulletproof and impervious to any ill effects.
What’s always been plain to me is that the main thing holding back much more research, is the dearth of data. Until the last couple of years with the advent of scoring apps that automatically generate lots of stats, there just weren’t a high percentage of coaches/teams/leagues/organizations who kept any data they had, for more than the current season.
The main reason for that is pretty simple. There’s no requirement to do it, and until there’s some entity willing to provide the capacity to both store and retrieve the data, it would be silly to require it. So, the loop remains uncompleted. If when you did that paper you’d have had access to a database that had valid pitch counts and dates for just 25% of all youth pitchers, youth being defined as less than college level, do you think it might have changed things a bit, and if so, how.
After many years of looking at what numbers I could get my hands on, I really don’t think the problem of arm injuries due to overuse/abuse is as widespread as many believe, or that it ever was. The thing I see limiting it, is the chance a particular pitcher will give the team the best chance to win. That generally means most pitchers will never be put in much jeopardy, at least from being overused/abused. But, if you limit the group looked at to the pitchers considered in the top 25%, its almost a slam dunk they’ll be put in harm’s way over and over again.