I have found Pilates to be very beneficial. It can be done lying down on a mat on the floor, and it strenghthens the spine and teaches us to move our arms and legs independently from the trunk, putting less pressure on the spine. You can watch TV, they must be done slowly (how much better can it get?) which is ideal for Parkinson patients.

Fast walking may have a positive effect on the entire body, but for Parkinson's patients, our difficulty needs to be addressed by exercise with the intention to improve our flexibility.

Thanks for the post!!
Vicky