What is the specificity principle best described as?

• A. The increase of muscle size with training.
• B. The rest period between sets determines gains.
• C. The way in which an exercise relates to the activity sought for performance.
• D. The total weekly training volume.

Answer: (C)

Specificity means that training adaptations come from how closely the workouts match the demands of the activity you want to improve. The more the exercises mimic the actual movements, muscle groups, speeds, ranges of motion, and energy systems used in the target performance, the more transfer you’ll see. For example, to improve sprint speed, you’ll gain more from high‑velocity sprinting and power work that mirrors sprint mechanics than from generic, slow, hypertrophy-focused lifts. Conversely, if the goal is a different outcome, like increasing maximum muscle size, you’d emphasize hypertrophy work, which isn't the same as training specific performance movements. Rest timing and total weekly volume are important parts of training design, but they describe recovery or overall workload rather than how closely the training matches the performance goal.