Something for the skeptics (with regard to energy-related and 'alternative' healing practices in general, not specifically naturopathy) to consider would be something like healing touch -- a practice which could be seen as one of those "touchless massage" types of things.
The training program for healing touch was initiated by an RN in the states and is taken/studied by many RNs as part of their required professional training 'upkeep'. It's also used in many hospitals around N.A. (and the world) as a therapy, in conjunction with traditional Western medicine. Because of its presence in the medical community, they're pretty big on research as well -- including studies conducted by researchers at Stanford, Vanderbilt and various state universities.
Here's a couple of links:
http://www.healingtouchresearch.com/articles.html
http://www.healingtouchinternational...=61&Itemid=178