Bilateral Breathing vs Single Side Breathing - Comparison Pool Time Test

Open Water Worlds Wednesday
Clermont FL
Earlier this winter I had the opportunity to do some swim sessions without any real purpose. Instead of wasting the swims, I decided to take the opportunity to test:

(1) Bilateral breathing

(2) Single-side breathing dominate side (right)
(3) Single-side breathing
non-dominate side (left).

The impetus for this test came from racing. Despite swimming to my dominate side (right) in training, I occasionally take a few strokes on the opposite side (left) during races for the sheer purpose of mixing it up and helping my right side relax for a few seconds.

What I found was that despite feeling incredibly awkward during those few strokes, I felt like I didn't slow down at all and actually made up a little ground on my competition. As a result, I thought I should finally test my breathing and learn something about it.


Test Protocol


With all my tests, I am not trying to win over any scientists. Frankly, my tests are done more to satisfy my own curiosity. For this test, I swam 200s LCM, alternating between, right-side (how I normally breath), bilateral breathing (one breath right, one breath left), and left-side breathing. I did 12x200 per day, so 4x200 of each pattern each day (ie, left, right, bilateral). I tested over 8 continuous days. In total, that is 96x 200s, and 32x 200s in each particular configuration.  I averaged the 4 reps of each configuration per day in the graph below for simplicity sake.

The pace I choose to swim was the easiest possible swim pace I could for that particular day. It would be equivalent to my all-day pace. It is a pace that is natural and one I don't have to think about.

Test Results


Analysis

I was definitely surprised by the test results. Mainly, every time I swam a 200 on my left side I felt incredibly awkward. Bilateral breathing felt awkward as well but not as awkward as breathing to my left. I totally expected that I would be significantly slower bilateral breathing and breathing to my left side. Both configurations felt so slow in the water, but every time I hit the wall at the end of the 200 I was objectively informed that I was no slower. My stroke rate was a bit higher on my left and bilateral configurations, but if it was truly less efficient I would have suspected slower times as well.


Takeaway


What I learned from this process is that it really doesn't matter how I breath, at least while swimming easy. It would be interesting to do the test again at higher level of efforts to see if the result was different.

Regardless, it is a reminder of how important athlete psychology is in sport. Just because you feel slow doesn't mean you are slow. Just because you feel fast doesn't mean you are fast. Testing things or practicing things gives you confidence. Confidence I believe leads to faster overall times as there is less thinking involved and less second guessing.


Other "testing" articles you might enjoy:

- Speed Suit Testing - TYR Torque vs Roka Viper Elite
My Blood Test Numbers - Testosterone and all
- Wind Tunnel Testing My Shoes
- My Complete Wind Tunnel Test

Lastly if you are a triathlete or endurance athlete, I have set up a FREE Ironman Q&A group on Facebook. Feel free to ask any question you might have about Ironman Training or endurance sports.

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