ESD, in the EXOS framework, focuses on developing which capacities?

• A. Flexibility and mobility only
• B. Pure sprint speed with no endurance
• C. Maximal strength in isolation
• D. Developing anaerobic and aerobic capacities based on the demands of sport

Answer: (D)

Energy system development in the EXOS framework targets training the body's various energy pathways so athletes can meet the specific demands of their sport. It emphasizes building both anaerobic capacity (short, high‑intensity efforts and repeated bursts) and aerobic capacity (endurance and recovery), in amounts that reflect what the sport actually requires. The idea is to train the systems you use during play, improving peak power, the ability to sustain high‑intensity work, and faster recovery between efforts. This isn’t about flexibility or mobility alone, nor about sprint speed without endurance, and it isn’t about maximal strength in isolation. For example, a sport with frequent bursts and quick recoveries would benefit from a mix of sprint-focused work and conditioning that boosts aerobic capacity, all tailored to the game’s demands.