** HIIT vs Interval Training **

[JoeC6Z51]

Baseline 9, need your opinion.....I will do my cardio in the morning as soon as I wake up (0500). Because my knees are jacked up, I will never be able to run again. What I do for Cardio is I get on the eliptical, warm up for about 3 mins, then hit it hard raising my heart rate to 90-95%MHR for 1 min, then rest at a slow pace for 2 min, and repeat this 10 to 12 times. Complete workout is usually 35 mins. I know you wouldn't consider this HIIT training, but I've been doing this on an empty stomach. I've read in a few posts that you shouldn't do HIIT training first thing in the morning on an empty stomach due to the high intensity of the workout. What is your opinion on this? Do you think I can continue to do this type of wokout on an empty stomach? If not, do you think a small protien shake (about a half serving of muscle milk shake or full serving?) 30 to 45 mins prior to cardio would be ok?

[baseline_9]

Baseline 9, need your opinion.....I will do my cardio in the morning as soon as I wake up (0500). Because my knees are jacked up, I will never be able to run again. What I do for Cardio is I get on the eliptical, warm up for about 3 mins, then hit it hard raising my heart rate to 90-95%MHR for 1 min, then rest at a slow pace for 2 min, and repeat this 10 to 12 times. Complete workout is usually 35 mins. I know you wouldn't consider this HIIT training, but I've been doing this on an empty stomach. I've read in a few posts that you shouldn't do HIIT training first thing in the morning on an empty stomach due to the high intensity of the workout. What is your opinion on this? Do you think I can continue to do this type of wokout on an empty stomach? If not, do you think a small protien shake (about a half serving of muscle milk shake or full serving?) 30 to 45 mins prior to cardio would be ok?

IMO nothing other than Low Intensity Cardio should be done on an empty stomach....


The reason why I think LIC can be done on an empty stomach Is because of the energy system used to 'Fuel' this Intensity of training...

LIC uses the 'Oxidative Phosphorylation' energy system, meaning the 'Fuel' used is Fats and Oxygen, and the key here is NOT PRIMARILY GLYCOGEN

An easy way to tell that you are within this energy system is a simple 'talk test',, Can you string a sentence without too much dificulty?


HIIT will be using the 'Anaerobic Glycolysis' and 'Aerobic Glycolysis' energy system to fuel most of the work and maybe even the 'APT' system if u push it 100% up a hill as I mentioned earlier...

As you can see within the mames of the two primary energy systems this type of training is a 'Glycolysis/Glycogen' dependent training system, meaning to get he benefits of this training you need to fuel'd for it... (More on the benefits of HIIT laiter)

The whole point of 'Fasted Cardio' is to eliminate glycogen and try to force the body to utalise stored body fat...


Even in a fasted state ur muscles will/can have glycogen stored but since the body can use an energy system where the fuel source is 'Full' and availiable it will use Fat and Oxygen..

When Performing HIIT in a fsted state IF ALL that glycogen is used up the body will then begin the process of breaking down the muscle tissue you have on your body to convert it to Gycogen that can then be used for fuel, this process is called 'Glucogenesis' which we do not want...



IMO the reason one should do HIIT or Interval training is to create an EPOC (Excess Post Oxygen Consumption)

Basically this means ur body is ramped up for a long period, even while ur not training, this 'ramping' up refers to metabolic rate, heart beat etc...

And guess what, the 'ramp up' puts you in a great position to burn calories from fat since it is low intensity and does not use Glycogen to fuel this...



Science Lesson Over

[baseline_9]

didnt realise how long that post was, sorry guys