In physical education, maintaining a high heart rate through exercise with minimal rest is a method to develop specific components of motor fitness. When the heart rate reaches up to 180 beats per minute and short breaks are taken before continuing the workout, this primarily targets and develops the component known as Endurance.
Endurance refers to the ability of an individual's body to sustain prolonged physical activity and delay the onset of fatigue. By engaging in activities that elevate the heart rate to such intensities with controlled breaks, the body's cardiovascular and muscular systems adapt to handle longer periods of exertion efficiently.
Among the given options:
Therefore, the component most closely associated with the described exercise approach of high intensity followed by short breaks is Endurance.