Hey y’all. Finals are done. Classes are out for a little while. I feel good. So good that I’ll be able to get back to writing every week!
Upon reading my last post about aerobic glycolysis, I noticed some issues with the article. There were some things that I either glossed over or need to revise, so this post serves as clarification on some of the hiccups in my last post. Nobody is perfect! Let’s wrap this ish’ up.
First off, I’d like to make the point clear that when you are training, energy systems don’t work like an on/off switch. For example, when you begin high intensity exercise, aerobic glycolysis is working along with the creatine phosphate and lactic acid systems. The difference is that most of your energy is obtained from the latter systems over the former at the beginning of your exercise/work that you’re doing; so energy acquired from aerobic systems will come into play later on as the length of exercise progresses, but the process has begun once you start training.
Next, I made a mistake regarding my explanation of aerobic glycolysis. Glycolysis is only part of the pie known as “Oxidative phosphorylation“. Specifically glycolysis refers to the breakdown of glucose for energy. As a reminder, we can get glucose from carbs or gluconeogenesis such as from lactate and glycerol from fats. This system (oxidative phosphorylation) is the sum of all aerobic reactions and pathways that create ATP; part of which being aerobic glycolysis. Proteins can also be used to produce small bits of ATP.
So during OP, energy may be derived from carbs, protein, and fats! Depending on the availability of nutrients will determine what your body goes for primarily. If you’re full of glucose or glycogen, then your body is going to use that because it’s the quickest and “costs” the least amount of energy to get energy. Your metabolism wants to save all the energy that it can for when it really matters. Once glycogen stores are depleted, then fats and even proteins will take up a larger role.
Keep in mind that this system takes awhile to produce any energy, so it is not as though you can expect to lose weight just from depleting glycogen stores and relying on fat. You’ll eventually crash because the energy demand just for breathing and moving around could be greater than what can be produced. Simply, get off yo’ butt and move!
So it is a bit more complicated than just carbs and other things being converted into glucose then some magic happens and you have energy. But, that’s the exciting thing about learning! You can learn something new every day!
I hope this clarification of things helped the incomplete picture I painted previously. Maybe I just made it even more complicated. Either way, thanks for reading! Share this article and others to educate someone you know!