People in the exercise group started out with 36 supervised-exercise sessions, then were sent home with a treadmill or exercise bike and instructed to get 120 to 200 minutes of exercise a week.
After completing it, he says he now walks five days a week on the treadmill at home while watching videos of walks through places like Venice and Egypt.
In 2011, the past year for which data is available, treadmill injuries in any context (home, office or gym) comprised 37% of all exercise-equipment mishaps, which numbered nearly 62, 000, a Wall Street Journal analysis of the database found.