Incorrect Data: In the Original Contribution entitled “Moderate-to-Vigorous Physical Activity From Ages 9 to 15 Years” published in the July 16, 2008, issue of JAMA (2008;300:295-305), incorrect data appear. See also related letter in this issue.
On page 295, in the abstract, the second sentence of the Results section should be “Weekday MVPA decreased by 37 minutes per year, while weekend MVPA decreased by 39 minutes per year. By age 15 years, adolescents were only engaging in MVPA for 50 minutes per weekday and 36 minutes per weekend day. Boys were more active than girls, spending 18 and 14 more minutes per day in MVPA on the weekdays and weekends, respectively. The rate of decrease in MVPA was the same for boys and girls. The estimated age at which girls crossed below the recommended 60 minutes of MVPA per day was approximately 13.2 years for weekday activity compared with boys at 14.9 years, and for weekend activity, girls crossed below the recommended 60 minutes of MVPA at 12.7 years compared with boys at 13.6 years.”