After “carbing up”, muscle glycogen can reach 200 mmol/kg of muscle tissue. In r
ID: 264598 • Letter: A
Question
After “carbing up”, muscle glycogen can reach 200 mmol/kg of muscle tissue. In runners, when the glycogen concentration gets too low (critical level of ~20 mmol/kg) they will have difficulties keeping pace. This is know as "hitting the wall". If glycogen metabolism during an endurance race occurs at a rate of ~5 mmol km-1 kg-1, how many kilometers would it take for a "carb'ed up" runner (200 mmol/kg) to hit the "critical" glycogen level in their muscles? Would they be able to complete a marathon (42.195 km)?
Explanation / Answer
After “carbing up”, muscle glycogen can reach 200 mmol/kg of muscle tissue. In r