Which model is related to how the body metabolically processes energy?

• A. 10 physical skills
• B. the Hopper
• C. Metabolic pathways
• D. Sickness-wellness-fitness continuum

Answer: (C)

Metabolic pathways describe how the body produces energy through different biochemical routes. The main idea is that energy comes from several systems that kick in depending on how hard and how long you’re exercising: the immediate phosphagen system powers ultra-short, high‑intensity efforts; the glycolytic pathway supports brief to intermediate efforts with glucose breakdown (and lactate production); and the oxidative system provides energy for longer durations by using carbohydrates, fats, and some protein. These pathways don’t all run at once; their contributions shift with intensity and duration, shaping performance, fatigue, and recovery.

This model is the best fit because it directly explains where the body’s energy comes from and how it’s metabolically processed during different activities. The Hopper is about variety in workouts, not energy production; the sickness-wellness-fitness continuum focuses on overall health status rather than metabolic processing; and the 10 physical skills describe attributes of fitness, not how energy is produced.