Here’s the truth: I was dead wrong.
Thanks to the influence of a few smart people around me (Justin, Pat and Carmen, I’m talking about you), I recently started reading more in order to increase my understanding of everything related to the human body. Along the way I picked up a copy of Joel Jamieson’s Ultimate MMA Conditioning book, recommended by many as a great starting point in the realm of energy system development (ESD).
By "a little bit deeper", I mean that I took a one way ticket to the bottom of the ESD rabbit hole. A couple of months later, I’m slowly emerging to the surface again, and one thing is now clear to me:
Cardio is one of the most important aspects of your overall fitness.
And that’s true REGARDLESS of who you are.
If you’ve spent any amount of time with me, you know that I hate generalizations. But this time I’m confident in saying that EVERYONE would benefit from better cardiovascular capacity.
For those of you who don’t care about (or as scared of) the science behind the energy systems and how they work, I encourage you to skip the following section and go straight to the 7 reasons why you need cardio training in your routine.
Energy Systems 101
The primary job of our three energy systems is to put P back together with ADP, resulting in more ATP to keep powering our bodily functions. In order to accomplish this task, each system employs a different strategy. Note that the energy systems don't PRODUCE energy, they simply recycle the products of the breakdown of ATP.
We all have a certain amount of ATP stored in our cells that is ready to be used instantaneously, but that reserve gets eaten up in the first couple of seconds of effort, requiring the energy systems to kick in and do their part.
At the opposite side of the spectrum we have the aerobic (or oxidative) system. This one doesn't deliver nearly as much punch, but is extremely efficient once it gets going. Provided enough fuel and oxygen are available, it can virtually run forever. When you are performing a low to moderate level of activity, like long distance running, you are primarily relying on your aerobic system. This pathway is the only one that relies on oxygen to perform it's job.
The third system, the glycolytic system, operates between the phosphagenic and the aerobic systems. It can deliver a high amount of ATP, but can only run smoothly for about 40 to 70 seconds until byproducts accumulate in the blood and force you to slow down. Just like the phosphagenic system, it operates without oxygen (anaerobically). It's the most painful pathway to train. Think of your last interval training session - you were likely tapping heavily into your glycolytic system.
So why should you focus so heavily on the aerobic system? Since you have three different pathways, shouldn't you be training all of them to some degree to get the best results?
While you definitely need to train each system to some extent, here are 7 great reasons why the aerobic system should be your primary conditioning focus, regardless of the activities or sports you practice.
#1 - It can help you live longer
This means that you should strive to be strong and have good cardio at the same time, but at the very least you should work on having good cardio!
#2 - It will improve your strength training
#3 - It will make your heart more efficient
A good indicator of your heart's efficiency is your resting heart rate: it should be under 60 bpm. If you are an athlete, aim for the mid to high 40s.
#4 - It will help you relax and recover better
#5 - It will make you faster
In order to produce force, muscle fibers contract (and relax) between 5 and 50 times per second. The higher the intensity of the effort, the higher the number of contractions per second (also called “Rate Coding”). Between each contraction, a muscle fiber needs to be inhibited (or “turned off”) in order to be contracted again. The inhibition - or relaxation - phase has a very high energy cost. In order for it to happen smoothly, you need a high concentration of ATP (i.e. energy containing molecule) in your cells.
Cardio training also increases muscle capilarization (how many blood vessels run through the muscle). This will increase the amount of oxygen available to the mitochondria to turnover ATP more rapidly. Both these aerobic adaptations will result in more ATP being available within the cell at any given moment, which will improve the rate of inhibition of your muscle fibers. This, in turn, will improve your speed of movement by allowing you to contract your fibers at a faster rate.
#6 - It is the most trainable of all three systems
Unlike aerobic ability, anaerobic [phosphagenic and glycolytic] metabolism can be improved to a lesser extent. This applies to anaerobic enzymes and particularly to peak blood lactate, whose increase is relatively small even when training is very intense."(4)
#7 - It provides long-lasting adaptations
For example, adaptations acquired through consistent strength training (i.e. increased muscle strength and bone density) will be retained for a long time (months to years). In the same way, aerobic adaptations like heart hypertrophy, increased capillary density, lower resting heart rate and maximum stroke volume all have long “lifespans”.
On the flip side, most adaptations acquired through training of the anaerobic systems (i.e. increase phosphagenic/glycolytic power, capacity and efficiency) will only last a few days to a few weeks.
For that reason, you should spend most of your time training your aerobic system since the changes that it will generate in your body will last the longest. Your anaerobic training should be programmed intelligently according to your competition/yearly training schedule.
How to get started with endurance training
Average heart rate value:
>60bpm: Start taking your cardio seriously (2-4 sessions per week)
<60bpm: Good average for most people but can be improved (2-3 sessions per week)
<50bpm: Athlete caliber conditioning. Aim to maintain (1-2 sessions per week)
Once you’ve established how much training you need, your goal should be the following: During each cardio session, spend 30+ minutes being continuously active while your heart rate remains between 125 and 150 beats per minute.
This could be done by running, rowing, cycling, pushing/pulling a sled, doing a light weight circuit, etc. Each week, increase your total volume of work (e.g. 5+ minutes per workout each week) for 4 to 6 weeks. After this training cycle, re-test your resting heart rate to see the improvements you’ve made.
Remember that this is just one way of improving your aerobic conditioning. Joel Jamieson outlines 8 different methods in his book. If you do the work outlined above, you will have built a solid foundation for your energy system development. Afterwards, you can take the next step and figure out what other training methods would fit your specific needs.
If you need help figuring out exactly what to do next, contact me today to set up a free consult, so I can help you figure out where to go with your training to get the best results possible!