A new study shows just one hour of exercise a week can help prevent disability.
"By the time we turn 50, there's probably 50 percent of us that have radiologic changes in our hips or knees that show arthritic changes," said Dr. Brad Steinle, the medical director of rehabilitation services for Saint Luke's Health System.
But unlike many others her age, 93-year-old Bettie B. is free of arthritis pain and remains very active. That is because of her commitment to movement. She has been coming to the SHAPE Fitness Center at Saint Luke's North Hospital-Smithville at least three times a week since having a heart attack more than 20 years ago.
KCTV's Carolyn Long talked to Bettie about her exercise secrets and how she keeps young.
Watch the full story below.