Which term is used for a physical activity program that involves performing a sequence of exercises with brief rests?

Circuit training refers specifically to a structured physical activity program where participants perform a series of exercises in a sequence, usually targeting different muscle groups, followed by short rest periods. This format is designed to provide a continuous workout that enhances both strength and cardiovascular fitness within a single session.

The emphasis on transitioning quickly from one exercise to another in circuit training promotes an increase in heart rate and maximizes calorie burn, making it efficient for improving overall fitness. Each "circuit" or round can vary based on individual fitness goals, and exercises might include resistance training, agility drills, or aerobic activities.

The other options mentioned encompass different training formats that may incorporate various elements of intensity, volume, and recovery, but they do not specifically define the typical structure and objective of a circuit training program. For instance, CrossFit combines elements of high-intensity training and functional movements but is more varied in its workouts, while boot camp training may resemble circuit training in structure but typically includes a more military-style format with exercises performed in groups. Strength conditioning focuses more on building muscle strength and may not involve the sequence and rest format highlighted in circuit training.