Effects of a BikeRacer Computer Training on Multitasking Ability and Road Security in Older Bicycle Riders.

Objective: To evaluate the effects of a 4-week "BikeRacer-Multitasking" computer-based training program on various outcomes, such as multitasking ability, and performance in complex situations on a bicycle exercise course, in comparison with two active control groups. Materials and Methods: Randomized controlled study including 56 participants aged 65 years or older. The intervention group (IG) performed 4 weeks of training with the BikeRacer-Multitasking computer game, in which two tasks had to be carried out at the same time: steering a bicycle on a given path, reacting to a target stimulus as quickly as possible, and ignoring three further distractor stimuli. The first control group (CG1) trained with a version of the BikeRacer game without the multitasking component, and the second control group (CG2) played Sudoku. All three groups performed questionnaire-based psychometric performance tests and tasks on a real-life bicycle exercise course twice, before and after the intervention. Results: Processing speed improved significantly over time in all three groups. Selective attention (correct answers) significantly improved in the IG and CG1, but not in CG2 (P = 0.022 for the interaction). Multitasking ability and divided attention significantly improved in IG, decreased in CG1, and showed no change in CG2 (P = 0.005 for the interaction). All three groups showed significantly better performances in some of the multitasking components in the bicycle course after the training compared with before (no significant group interaction). Conclusion: BikeRacer-Multitasking game increased the multitasking ability of senior cyclists as well as their performance in complex situations of a bicycle exercise course.