This study looks at whether a type of exercise video game, called an exergame, can help adolescent boys with autism spectrum disorder (ASD) who play table tennis react faster and move more quickly (agility) during play. Twenty-four adolescent male table tennis players with mild ASD are taking part. Half of them add 20 minutes of exergame training, using a light-based reaction device, to their usual table tennis practice twice a week for 8 weeks. The other half continue their usual table tennis practice only, without the exergame. Reaction time is measured using a light-based reaction device, and agility is measured using a standard running drill (the T-test), before and after the 8-week period. This study aims to find out whether exergame training added to regular practice can help young table tennis players with ASD react and move faster during matches.