Physiology During a 100 m sprint which of the following is used by the muscle for meeting energy demands? A Phosphofructokinase B Phosphocreatine C Glucose 1 - phosphate D Creatine phosphokinas 💡 Explanation During a 100 m sprint which of the following is used by the muscle for meeting energy demands? ✓ Correct Answer: B. Phosphocreatine