Letter to the editor, "High intensity aerobic exercise improves bimanual coordination of grasping forces in Parkinson's disease".

We have read with utmost interest the article entitled, "High intensity aerobic exercise improves bimanual coordination of grasping forces in Parkinson's disease" by Jansen et al. They have highlighted the importance and feasibility of providing high intensity aerobic exercise on improving the bimanual coordination of grasping forces for the patients with Parkinson's disease (PD). We would like to highlight few methodological and statistical issues with the study for more effective use of the study results among the medical fraternity involved in rehabilitating the patients with PD.