Which of the following fitness approaches emphasizes achieving a set number of repetitions followed by rest periods?

The focus of the correct answer, which pertains to volume intervals, is on structured workout sessions where participants aim to complete a specific volume of repetitions of an exercise within a set timeframe, followed by defined rest periods. This approach is designed to enhance muscular endurance and strength while allowing for recovery, leading to improved performance over time.

In volume intervals, the emphasis on both the number of repetitions and rest is crucial; it allows participants to balance work with recovery, optimizing their physical output during the active phases while ensuring adequate rest to prevent fatigue.

Other fitness approaches mentioned, like power squat and Tabata training, do not strictly follow this method of achieving a set number of repetitions with specific rest periods. Power squats focus more on strength and explosiveness rather than volume and rest, while Tabata training involves high-intensity intervals with very short recovery periods that do not allow for completion of a designated number of repetitions before resting. Bootcamp training typically consists of varied intervals of exercises but also does not emphasize a fixed number of repetitions followed by scheduled rest. Therefore, volume intervals stand out as the approach that correctly aligns with the concept presented in the question.