The Touch Research Institute
The Touch Research Institute (http://www6.miami.edu/touch-research) at the University of Miami School of Medicine has conducted a number of studies on the effects of massage on the body. Their web site provides a searchable database of these studies.
The Massage Therapy Foundation
The Massage Therapy Institue (http://www.massagetherapyfoundation.org) promotes research, funds grants, and offers a searchable online database of published reports in a number of languages.
If you’re looking for other forms of complementary and alternative medicine, such as acupuncture, chiropractic, or homeopathy, the National Center for Complementary and Alternative Medicine (http://nccam.nih.gov), part of the National Institutes of Health, offers information about these modalities.