Eds: APNewsNow.

RAPID CITY, S.D. (AP) An autopsy has found that a Rapid City high school Football player who collapsed and died during practice on July 14 had a heart condition.

Sixteen-year-old Ryan Gramberg was a student at Stevens High School.

The Pennington County coroner says Gramberg's his death was due to a disease that thickens the heart muscle.

The rare condition is associated with people who otherwise seem to be healthy.

Gramberg was taking part in a light practice session when he passed out and was rushed to Rapid City Regional Hospital, where he later died.

(Copyright 2008 by The Associated Press. All Rights Reserved.) APNP 08-12-08 0616CDT | save this article / add to your favorites list