The "Institute for Scientific Research" that did that study is a big pork-barrel project with exactly zero reputation for quality. I would bet that if you dig, the only reason NASA was associated to the research you link was congresional earmark requiring it.
"Examples of such earmarking, which have prevented NASA from allocating funding to programs that it considered to be most critical, include $15.5 million for the Institute for Scientific Research, in Fairmont, West Virginia"
See http://www.nytimes.com/2006/04/08/washington/08earmarks.html
[Edit: dug a little more]
"Examples of such earmarking, which have prevented NASA from allocating funding to programs that it considered to be most critical, include $15.5 million for the Institute for Scientific Research, in Fairmont, West Virginia"
Source: http://caib1.nasa.gov/events/public_hearings/20030514/transc...