Trunk forward bending

Parkinson s disease or Paralysis agitans was first described as early as 1817 by James Parkinson, a London doctor, as consisting essentially of Involuntary tremulous motion with decreased muscular power in parts not in action and even when supported, with a propensity to bend the trunk forwards and to pass from a walking to a running pace, the senses and intellect being uninjured . 

Trunk movement Generating momentum Sitting and bending forward, backward, and sideways to retrieve items on a table... 

Avoid any kind of bent or unnatural posture. (Bending the trunk or the head sideways is more harmful than bending forward.)... 

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