Argentine tango can improve balance, and functional mobility, and may have modest benefits upon cognition and fatigue in Parkinson’s disease. These findings must be confirmed in longer-term trials explicitly powered for cognition and fatigue.
“Tango for treatment of motor and non-motor manifestations in Parkinson’s disease: A randomized control study” by Silvia Rios Romenets, Julius Anang, Seyed-Mohammad Fereshtehnejad, Amelie Pelletier, and Ronald Postuma in Complementary Therapies in Medicine. Published online February 9 2015 doi:10.1016/j.ctim.2015.01.015
The following link gives you a some lengthier text: http://neurosciencenews.com/parkinsons-tango-dancing-neurology-1948/
[In the end of this URL they have numbers 1948. I assume it is not the year when this study was done. . . . . ]