I have a relative with Alzheimer's who is in her eighties. Once when I took her for a ride, she started hitting me, and attacking me while I was driving the car. Luckily, I was able to safely pull over.
I had a neighbor with Alzheimer's. She was in her seventies. She climbed up on my roof one year, and took all my Christmas Lights down, and over to her house. She could easily scale my 6 foot wooden fence, and get in my backyard. She was very strong because she was basically a perpetual motion machine..always walking, climbing, never still.