Endurance running is an oxygen guzzling sport.
The Aerobic energy system starts becoming more and more predominant once exercise extends beyond 1 minute. This system uses fuel to produce energy in the presence of oxygen. As you pick up the pace, the demand for energy increases, therefore you need to speed up the supply of oxygen to the muscles. You, as a runner, will experience this as your breathing becoming more and more rapid until demand outweighs supply and you are forced to slow down. Our anaerobic (without oxygen) system does contribute, but this system is limited in how long it can go before you have lactic meltdown.
Regular endurance training causes adaptations in our heart, lungs and muscles that increase the amount of oxygen being delivered to the muscles with each heartbeat. You will experience this as your heart rate being lower than previously at the same pace and your breathing being less intense. You will actually start being able to talk on runs with the end result being able to go faster more easily for longer.
Now that you know the importance of getting plenty of oxygen to your muscles, let’s look at how the way you breathe affects this and how you can know if you are breathing optimally for maximum oxygen supply or not.
Diaphragm vs. Chest Breathing
Just below our rib cage is a muscle called the diaphragm. When this muscle contracts, our chest expands and a vacuum effect is created, allowing air to be pulled into the lungs. As this muscle relaxes, the chest contracts pushing air out of the lungs. This form of breathing (often referred to as belly breathing) is relaxed and allows a large amount of air to fill the lungs on each breath.
There is a second type of breathing which is less effective and often observed in beginner runners. This is what we call chest breathing. The runner tries to forcefully draw in (or suck) air into the chest and then force it out again. In this method you will observe the chest actually contracting, reducing the ability of the lungs to expand, when inhaling. You will also observe the shoulders rising and a lot of tension in the shoulder and chest area.
As you can see it is clear that diaphragm breathing is not forced, allows the lungs to be filled to a much greater capacity, and is relaxed.
So how do you know what type of a breather you are?
The most common signs you are breathing with your chest are:
- Tight wheezy sound when running hard.
- Shoulders raising when you breathe in and a lot of tension around the shoulders and chest.
- Rapid out of control, almost panicky breathing when running hard.
A simple test you can do is the following:
- Build up to a pace where you are breathing hard.
- Stop and place one hand on your stomach and one hand on your chest.
- If your top hand is moving up and out and your lower hand is moving in as you breathe in, then you are breathing with your chest.
- If your lower hand is moving out as you breathe in and the upper hand is remaining fairly still, you are breathing with your diaphragm.
How do I learn to breathe with my diaphragm?
Below I give a simple exercise to do that will help you develop your diaphragm breathing. It is very hard to think about when running hard which is why I recommend doing the exercises below daily until the breathing pattern becomes natural. If you are already breathing with your diaphragm you can use these exercises as a breathing “strength” exercise.
Lie on your back, knees bent and shoulders as relaxed as possible.
Place your fingers just below your belly button.
Now push your stomach out as far as you can (make a little pregnant belly), hold it for a second then relax. Don’t try to breathe. Just relax and you will notice air coming in as you expand and going out as you relax. To help you, purse your lips, you will hear the air coming in and going out.
Once you have found the rhythm, add some control:
Expand your tummy slowly for 4 counts letting the air come in slowly.
Then relax for 4 counts letting the air release slowly.
It is a bit like filling a balloon and then letting the air out again.
Once you have the rhythm lying down, try the exercise standing.
Try this: Try to push your stomach out while breathing out hard. You will see it is very difficult as the air wants to come in!
Try this great little strengthener:
Place something that has a little bit of weight, such as a book, on your stomach.
Now push the book up as high as you can and then relax.
Again, don’t force breathe, just let the air flow in and out.
When you are running hard and find your breathing getting out of control, focus on slowly expanding your belly (a 2 or 3 count is good) until you have a good breathing rhythm again.
Keep practicing and before you know it you will be an oxygen monster!
Coach Kathleen from Active4Life has over 16 years of coaching experience and 30 years competitive athletic experience. She is an ASA level 3 certified coach, qualified athletics lecturer and a qualified personal trainer. Read more about Coach Kathleen here.