Final answer:
The correct rest interval for sets of power cleans at 85% 1RM is 2-3 minutes, which allows muscles to recover and perform effectively while minimizing injury risk (Option C).
Step-by-step explanation:
When lifting at such a high percentage of one's one-rep max (1RM), the body needs adequate time to recover before performing the next set. This is to ensure that the muscles have partially restored their ATP-PC system, which is primarily used during high-intensity, explosive exercises like power cleans. Insufficient rest can lead to a decrease in performance and an increased risk of injury.
Therefore, for power and strength training, longer rest periods are generally recommended compared to endurance or hypertrophy-focused workouts.
Thus, the appropriate rest interval between 2 sets of power cleans using 85% 1RM is C. 2-3 minutes.