The improved jump ropes devices described herein generally include a
source of rhythmic sound, a sensor for determining the motion of the jump
rope, and a visual output (e.g., feedback) for indicating how well a user
is moving or jumping in time to the rhythmic component of the sound. The
device may also include a controller for receiving input from the source
of rhythmic sound and the sensor, and controlling the visual output.
Methods of using the devices are also described.