More time in PE doesn’t add up

Nanci Hellmich:

Just increasing the amount of time students are supposed to spend in physical education class is no guarantee they’ll move more, a new study shows.
Obesity experts have been calling for children to go to gym class more often to help stop obesity in young people. About one-third of children and teens in the USA are either overweight or on the brink of becoming so.
Government research shows that the percentage of high school students enrolled in daily physical education decreased from about 42% in 1991 to 33% in 2005.
Most states introduced legislation this year and in 2005 to toughen up PE requirements.