CHICAGO (AP) Overweight adults who are not on a diet need only a small amount of exercise to prevent further weight gain, a study found.
Participants who got no exercise during the eight-month study gained an average of almost 2.5 pounds. But 73 percent of those who briskly walked 11 miles a week, or about 30 minutes a day, were able to maintain their weight or even lose a few pounds.
The most noticeable weight loss occurred in those who did the most vigorous exercise. They lost an average of nearly eight pounds over eight months, and also shed more than 10 pounds of body fat and gained about 3 pounds of lean body mass on average.
The study was led by Duke University researchers and involved 120 overweight or mildly obese adults who were instructed not to diet during the research.