Functional training has its origins in rehabilitation.
Physical therapists developed exercises that mimicked
what patients did at home or work in order to return
to their lives or jobs after an injury or surgery.
Thus if a patient's job required repeatedly heavy
lifting, rehabilitation would be targeted towards
heavy lifting, if the patient were a parent of young
children, it would be targeted towards moderate
lifting and endurance, and if the patient were a
marathon runner, training would be targeted towards
re-building endurance.
Functional training involves mainly weight bearing
activities targeted at core muscles of the abdomen and
lower back. Functional training attempts to adapt or
develop exercises which allow individuals to perform
the activities of daily life more easily and without
injuries.