Just 10 minutes to 30 minutes of exercise a day can improve thequality of life for sedentary, overweight or obese women, Americanresearchers suggest.

The analysis studied hundreds of women, average age 57, who tookpart in the Dose Response to Exercise in postmenopausal Women (DREW)study, first reported in 2007. These newly released secondary resultsfocused on quality of life among 430 women who were randomly assignedto four groups -- three groups did various amounts of exercise (70..