We usually do ROM movements on bedridden patients -- these exercises help keep joints flexible. ROM stands for "range of motion."
Don't try to help your mother do ROM
exercises without taking to her doctor or physical or occupational therapist first. A professional can train you how to do them properly.
Basically, you take each joint in the hands, legs, feet, and fingers and put it gently through its range of motion or movement comfort zone. For instance, you can gently bend and flex your mom's arm while supporting her wrist and elbow. You can do the same with her fingers, legs, feet, and toes. A ROM routine usually works all of the joints in the body. You never force the movement, and obviously, you need to be careful if your parent has any broken bones or tender areas.