A study by Combs et al in 2011, published in the Physical Therapy Journal discovered really interesting results.
They reported that “The boxing training program was feasible and safe for these patients with Parkinson’s disease. The patients in this case series showed short-term and long-term improvements in balance, gait, activities of daily living, and quality of life after the boxing training program. A longer duration of training was necessary for patients with moderate to severe PD”.
Have a look at this 60 second report here –