For the tests, the volunteers used the access device (Leap Motion) and a computer that were previously installed. The intervention was composed by 8 sessions of 15 minutes each, where the volunteers used a virtual environment attached it to a Leap Motion, which is a sensor that allows to capture the movements that are produced by the hands and reproduce them in a computer through a 3D virtual environment in order to stimulate the execution of their finer movements. The strength (Jamar) and motor coordination (wooden box) evaluations were made in the first, fourth and eighth sessions with the objective of checking the gain progression or not of motion coordination and grip strength.

The grip strength was evaluated through a dynamometer JAMAR 5030-J, formed by two parallel steel bars, one stationary and a mobile one, which can be adjusted in five different positions. The volunteer was sitting with a neutrally rotated abducted shoulder, elbow flexed at 90°, the forearm in neutral position, and the wrist between 0° and 30° of extension, 0° to 15° of ulnar variance and it was requested that he or she made the grip movement. This test was performed three times with a one-minute-break between each one.

The intervention was composed by 8 sessions of 15 minutes each, where the volunteers used a virtual environment attached it to a Leap Motion, which is a sensor that allows to capture the movements that are produced by the hands and reproduce them in a computer through a 3D virtual environment in order to stimulate the execution of their finer movements.

The motor coordination evaluation was made in the first, fourth and eighth sessions. Each volunteer used three balls, or spheres, of different sizes (small, medium, large). The objective was to insert each ball in each orifice. The time was measured with a chronometer.