This first one is the closest I could find in a half hour search. Nothing in my favorites was any good. Didn't know most of what I had in this area is on speech, not muscle. Other ones below are just interesting.
http://ocw.tufts.edu/Content/35/lecturenotes/375738
http://www.recreationtherapy.com/articles/autismandquatictherapy.htm
http://www.iidc.indiana.edu/pages/irca
http://www.faqs.org/health/Sick-V1/Cerebral-Palsy.html
