The principle stating that the body's adaptations are specific to the type of imposed demands is known as what?

• A. Overload principle
• B. Reversibility principle
• C. Specific adaptation to imposed demands principle
• D. Principle of periodization

Answer: (C)

Specific Adaptation to Imposed Demands is the principle that the body’s adaptations are specific to the type of imposed demands. When you train for endurance, the body develops changes like more mitochondria, greater capillary density, and improved fat-oxidation efficiency. When you train for strength, adaptations center on neuromuscular improvements and muscle fiber growth. The form of the stress you place on the body determines the exact adaptations that occur. Overload describes simply increasing workload to elicit change, reversibility is about losses when training stops, and periodization is about planning training cycles; none explain why different goals produce different, specialized adaptations as clearly as this principle.