CHARLOTTESVILLE, Va., Sept. 1 -- The University of Virginia issued the following news release:

Schools across the country have steadily reduced recess during the past two decades, often to make more time for math and reading instruction. A growing body of research suggests that strategy may be backfiring.

In May, the American Academy of Pediatrics issuedits first updated guidance on recess in 13 years, citing evidence that recess supports not only children's physical and emotional well-being, but also their academic success.

Experts at the University of Virginia's School of Education and Human Development say the science is clear: Giving students time to move, play and recharge helps them learn more effectively.

Associate professorTanya...