Study: Women Who Don't Diet Should Exercise 1 Hour Per Day, 7 Days a Week
A study was published in the online version of the Journal of the American Medical Association that recommends women should work out 60 minutes per day, seven days a week, in order to maintain a normal weight over their lifetime. That figure may come as a shock to many, who have been told they can get away with much less, but this figure is for those women who don't diet.
The recommendation is aimed at women who are currently at a normal weight that don't want to diet, but would like to maintain their weight and avoid gaining weight over time. Most Americans tend to gain about 1.5 pounds per year from age 25 to 55.
There is far from a unanimous decision on just how much exercise we need. In fact, other experts say that only 35 minutes per day for seven days per week is sufficient.
Dr. I-Min Lee, an epidemiologist at Brigham and Women's Hospital in Boston and an associate professor at medicine at Harvard University says:
"We wanted to see in regular folks -- people not on any particular diet -- what level of physical activity do you need to prevent weight gain over time. It's a large amount of activity. If you're not willing to do a high amount of activity, you need to curtail your calories a lot."
The study found that only the women who were normal weight at the beginning of the study and who engaged in moderate intensity activity for an average of 60 minutes per day, seven days a week, were able to maintain a normal body weight. A normal body weight is defined as a body mass index of less than 25. This recommended amount of activity is three times higher than what the federal government recommends to lower the risk of chronic ailments including heart disease. The U.S. government recommends a total of 150 minutes per week of exercise.
In the study, moderate intensity activity was defined as walking or hiking, jogging, running, bicycling, aerobic exercise or dance, use of exercise machines, yoga, tennis, squash, racquetball, and swimming.Source: http://www.clevelandleader.com/node/13435