muscle glycogen

基本解释

The reason for that is that the enzymes that help the body re-synthesize muscle glycogen are really most active in that first 15 minutes.
理由是帮助身体重新合成肌肉糖原的酶在那最开始的15分钟最为活跃。
bbs.chinadaily.com.cn
In addition, your muscle-glycogen stores nearly vanish during a marathon, something which doesn't happen in the 10K and 5K (unless you are following a weird, low-carb diet).
另外，在马拉松过程中，您的肌肉-糖原储备几乎消耗已尽，10K和5K则不会如此（除非您食用怪异的低碳水化合物膳食）。
wntest.ustc.edu.cn
Conclusion (1) Both endurance and high-intensity intermittent training can enhance skeletal muscle glucose transport capacity significantly after glycogen-depletion exercise.
结论：（ 1）耐力训练和间歇高强度训练均能增强大鼠骨骼肌葡萄糖转运能力。