邊段路最甘呢?

jjchsg

原帖由 onionufo 於 2009-2-4 16:30 發表

                               
登錄/註冊後可看大圖

撞左墻就表示能量已所剩無幾，何來“起死回生”？

Before hitting the wall, your body mainly use the glycogen stored in the body.  After hitting the wall, your body need to switch to use fat as energy.  Everyone has enough fat in the body to give enough energy for a full marathon (actually enough for 3-4 full marathon distance).  Some people has difficult time to switch and there is a gap before the switch is completed.  Therefore experience lack of symptom like heavy leg, cannot lift up the leg etc.  Once the switch is completed, you will have energy to continue to run though at a slower pace since fat is less efficient to generate energy.  Some people switch seamlessly and never feel "hit the wall".  The switching process can be trained.  So far, for the few full marathon that I completed, I never hit the wall (because my thalassemia never allow me to run fast enough to exhaust my glycogen).  So I cannot exactly tell you what a person feel when hitting the wall.

[ 本帖最後由 jjchsg 於 2009-2-4 17:34 編輯 ]

亞平

原帖由 jjchsg 於 2009-2-4 17:33 發表

                               
登錄/註冊後可看大圖

Before hitting the wall, your body mainly use the glycogen stored in the body.  After hitting the wall, your body need to switch to use fat as energy.  Everyone has enough fat in the body to give  ...

醒起啦...最初用糖原為動力,用完轉燒脂,轉換過程係好辛苦,之後慢慢就再次恢復體能.

alfredfong

咁靠意志應該可以捱過?

Tarry

原帖由 亞平 於 2009-2-4 16:09 發表

                               
登錄/註冊後可看大圖

1. 何為撞牆位, 是否跑全馬的健兒才有呢?
人體貯藏的碳水化合物一般只足夠維持三小時的不斷消耗，超過了這個界限便會出現所謂的『撞牆』現象（Hit Wall），身體會感到極度疲勞和痛苦,亦有機會出現幻覺,神志不清。一 ...

Ching, 多謝指教, 明白啦.  
Tarry