MONDAY, July 29 (HealthDay News) -- Boys with autism or attention-deficit/hyperactivity disorder are more at risk of addictive video game use than typically developing boys, according to new research.

The study of nearly 150 boys found that those with an autism spectrum disorder (ASD) played video games for significantly longer periods each day than typically developing boys -- an average of 2.1 hours versus 1.2 hours. Boys with attention-deficit/hyperactivity disorder (ADHD) averaged 1.7 hours of video game use daily.

"Children with ASD and those with ADHD may be at particularly high risk for significant problems related to video game play, including excessive and problematic video game use," according to the study, published online July 29 and in the August print issue of Pediatrics.

Experts said they aren't surprised by the findings.

"Boys with ADHD and boys on the autism spectrum both have difficulties relating with peers," said Dr. Andrew Adesman, chief of developmental and behavioral pediatrics at the Steven and Alexandra Cohen Children's Medical Center of New York in New Hyde Park. Video games provide a diversion that doesn't require interaction with peers or siblings, he added.

Another professional said video games in and of themselves aren't the problem. "There does have to be structure around video game use. Like anything else, it's best in moderation," said Dana Levy, an assistant professor in the department of child and adolescent psychiatry at the NYU Child Study Center in New York City.

In the United States, about one in 88 children has an autism spectrum disorder, which can range from mild as in Asperger syndrome to full-blown autism with severely limited communication skills. It's estimated that between 3 percent to 7 percent of school-age children have ADHD. Boys are far more likely than girls to have either diagnosis.

Common features of autism include impaired social and communication skills, and a repetitive interest in a restricted number of activities. These symptoms may be directly related to problematic video game use, according to the University of Missouri researchers.