Firstly, so there is no misunderstanding... I would like to thank Joe Slowanski for bringing this article to my attention and also thank Allison Elizabeth Devan and Hirofumi Tanaka at the University of Texas for doing this (and at least some) research on bowling and bowlers (in general). I didn't think I had to clarify that because the researchers names are in the article, but now I have.
Research related... All researchers understand that there will be some limitations in studies. For example, "senior and PBA professionals bowlers" is both a strength and a limitation. However, 147 participants is enough of a sample to complete relatively good research and to analyse it with robust statistics. So don't be fooled by the amount of people... especially considering they were elite bowlers... no researchers will ever get 500-1000 elite BOWLERS in a sample, unless it is over the course of many years (and if that ever happens, I'd be interested in the research)!
Also, much of what we know as research comes from common sense questions. With that said, common sense questions need to be validated by reaserch to be a reliable and valid (and thus a credible) source of information. The credibility of our sport is declining... perhaps sport science research and research on bowlers can improve the credibility of the sport?
I agree with wchester that the physical game declines due to age, however, bowlers can "play" for much longer than people in other sports. Unfortunately, I don't feel that these researchers have talked enough about the difference between bowling performance and age, related to other sports and age. For example, athletes in endurance and physically demanding sports retire at a much younger age than bowlers (if bowlers ever retire?). Perhaps this may be due to the injury rate of other sports compared to bowling, etc. Not sure really... another research topic perhaps?
Again, this brings me back to my original point... will the 2-handed bowlers stick around until they are 45 years of age? Again... biomechanical research could be useful in helping these athletes compete at a later age, but this type of research is not "common sense" research at all!!
One thing I do know is that if this revolutionary and exciting style is able to withstand the test of time... It will be nothing but positive for our sport!!
Dr. Chris