The present invention includes a handheld device and a main device,
wherein the handheld device is held by an athlete and the main device is
moved with the athlete. Through a measuring device acquiring a
physiological condition of the athlete and a movement state of the
handheld device and transmitting thereof to the main device, the main
device can produce an exercise indication signal according thereto, so
that the athlete can obtain an exercise direction and also can manage the
physical condition during exercise.