
Running epidemiologist Paul Williams, Ph.D., often doesn’t get the respect he deserves. That’s because Williams doesn’t conduct randomized, controlled, double-blind studies. Those “gold standard” studies are the ones cheap nfl jerseys from china free shipping that usually make the headlines.
Instead, Williams collects and analyzes self-reported data from runners. Lots of it. He was a “big data” guy long before the term gained its present currency due to folks like Nate Silver and the “quants” on Wall Street. Indeed, Williams launched the National Runners Health Study in the pages of Runner’s World in 1991, and he’s been happily amassing runner nfl jerseys china data ever since. (He also collects data for a smaller National Walkers Health Study.)
Every year, Williams runs several of his impressive data sets through a strict statistical analysis, and tells us more about ourselves than we could possibly learn anywhere else. Today the journal Medicine & Science In Cheap Chicago Bulls Jerseys Sports & Exercise has released his latest effort, a look into osteoarthritis (OA) and hip replacement (HR) rates among 74,752 runners (after 7.1 years of follow-up) and 14,625 walkers (after 5.7 years of follow-up).



