Fitness question

[gotaquery]

Hi,

I'm a journalist looking for specific information on the health benefits of San Da. I need info from a regulated source - World Institute of Kickboxing or somesuch. Any ideas? Do such organisations exist? Which are the most reputable, credible?

I'm in China, but they could be based anywhere providing they're prominent enough. There are plenty private instructors here I could ask for general info - I've tried already and they don't have quite the specifics I need - so contacts for individuals probably aren't any good to me.

Links, email addresses or just names of organisations I can follow up would be really useful.

Thanks.