Hi, there.
I am a certified Pilates instructor through Stott Pilates (www.stottpilates.com). I have also certified with Elizabeth Hansen of Fit to the Core (mentioned above) who created Equestrian Pilates (www.equestrianpilates.com).
I must take exception to the recommendation of only working with classical Pilates instructors who have trained with Romana “what’s her name” in NYC. While her studio is undiluted/evolved from what Josef Pilates taught until his death in the 1960’s, that doesn’t mean it’s the only game in town.
I also take exception to the classical form of a very tight butt and turned out legs. That works perfectly for dance (which I also did years ago), but doesn’t work very well for riding. First, you need to bend your knees; second, you need your feet to be straight forward; third, many horses (especially chestnut mares!) don’t like a clenched butt.
I have taught once-a-week Power Mat classes and my students’ riding has benefited. Their (my) trainer has said so and recommended it to them to take classes with me.
I’ve also personally benefited from Reformer work.
Certification - check into the certification requirements: How many hours of training? What’s required to earn the certificate? Showing up or studying for 6-9 months and taking a test?
The best that I know of (there may be others) are: Stott, Romana’s, and Physical Mind Institute. I know of someone who got certified through ITT and I liked her work.
If it’s a 2-day, weekend course with a cert at the end for zero effort, it’s worth the paper it’s printed on and no more.
If you want a recommendation for a DVD for home use, go to www.stottpilates.com and look at either the “Essential Mat” or the “Power Mat” DVD.
I think Elizabeth Hansen of Equestrian Pilates either has or is planning to publish a DVD also.
Any more questions? Please PM me or post here.
Good luck to you!