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Endurance athletes require 1.0–1.6 g/kg/day of protein to maintain lean body mass and support recovery. Higher intakes (1.6–2.0 g/kg) are reserved for strength and hypertrophy athletes. The general RDA (0.8 g/kg) is insufficient for competitive athletes. Excessive intake (>2.5 g/kg) offers no added benefit and may increase risk of dehydration or gastrointestinal stress. Nutrition is a major section of the CSCS exam, with an emphasis on applied recommendations.

Vitamin B12 supports DNA synthesis and red blood cell formation. Deficiency leads to megaloblastic anemia and reduced endurance. Vitamin C supports collagen and iron absorption, vitamin D aids calcium metabolism, and vitamin K supports blood clotting. Micronutrients and performance are common CSCS nutrition topics.

Intrinsic motivation is driven by internal satisfaction, enjoyment, and mastery. Extrinsic motivators include scholarships, medals, and recognition. The CSCS exam expects candidates to differentiate intrinsic from extrinsic motivation and apply them in athlete coaching.

Muscle spindles sense changes in muscle length and velocity, triggering the stretch reflex to resist overstretching. In contrast, Golgi tendon organs (GTOs) detect tension and trigger autogenic inhibition. The CSCS exam often tests proprioceptor roles in performance and injury prevention.

Endurance athletes require 1.0–1.6 g/kg/day of protein to maintain lean mass and support recovery. Strength athletes typically need 1.6–2.0 g/kg. The general RDA of 0.8 g/kg is insufficient for athletes, while >2.5 g/kg provides no added performance benefit. The CSCS exam stresses tailoring protein intake by training type.