 With the growing accessibility of computer-assisted technology, one option for rehabilitation programs for individuals with Duchenne muscular dystrophy DMD is the use of virtual reality environments to enhance motor practice. Thus, it is important to examine whether performance improvements in the virtual environment generalize to the natural environment. To examine this issue, we had 64 individuals, 32 of which were individuals with DMD and 32 were typically developing individuals. The groups practiced two coincidence timing tasks. In the more tangible button-press task, the individuals were required to intercept a falling virtual object at the moment it reached the interception point by pressing a key on the computer. In the more abstract task, they were instructed to intercept the virtual object by making a hand movement in a virtual environment using a webcam. 