Alex demonstrates moving from a quadruped (hands and knees) position to a tall kneeling position, with assistance. The purpose of this exercise is to develop the back extensors and greater trunk control.
Besides having "high tone" in his leg abductor muscles,Alex has dystonia in his trunk muscles--yet another consequence of his spastic cerebral palsy.
Notice how Alex is interested in dumping those pieces and cleaning them up again! His PT is right when she says he's a great cleaner-upper at home!
