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Finding the Most Efficient Swim Stroke

A seminar dedicated to finding and calculating the metabolic costs and speeds of different swim strokes

Thomas Johnson

on 19 April 2010

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Transcript of Finding the Most Efficient Swim Stroke

Finding the Most Efficient Swim Stroke! A seminar dedicated to comparing the speed of swim strokes to their metabolic efficiency. Biomechanics os Swimming Experiential Immersion The Strokes Themselves Quick Intro Energy Systems Forces in the Water Exercise Intensity Heart Rate Range Lactate Threshold Immediate Energy System Short Term Energy System Long Term Energy System This system uses the high energy phosphates
known as the ATP-PCr phosphates. This energy system is used during intensive
moments like a breakaway in a soccer match or
a 100 meter sprint. Comprised of intramuscular glycogens, this system's
job is to resynthsis the high energy phosphates in
the immediate energy system.
The system where lactic acid affects the body. This system is most noticeable at the end of
a 400 meter sprint or the duration of a
mid-range run. The system which the body resorts to after several
minutes of intense exercise. Oxygen consumption will increase and eventually reach
a steady rate. Theoretically the body could depend on this system
forever however there are limiting factors like
dehydration and loss of electrolytes. Weight Lift Thrust Drag Weight is the amount of force pushing
an object down. Buoyancy, force pushing the object up in the water. Force that needs to be overcome to push an object
forward in the water. What pushes an object through the water. Anaerobic Aerobic Measurement of how hard an exercise works someone. Many important factors to consider, like
lactate threshold and heart rate. This is a crucial part of my research project,
one of the main components is determining exercise
intensity. How I will measure exercise intensity. From resting heart rate to max heart rate Refers to much metabolic energy is used. Very important factor, if someone exercises too
much and passes their threshold then they will feel
sickly and won't be able to continue exercise. Will limit certain strokes in efficiency,
example butterfly can't be swam non-stop for
5000 meters. Front Crawl Back Crawl Butterfly Breaststroke Sidestroke Elementary Backstroke Et cetera, et cetera... However, I will only have time for a few strokes in my EI The important thing to take from this section is that
there are lots of strokes, and there of lots of ways to do them!

That's the heart of the issue!

How can we know which stroke is the best for what scenario???? So what the heck do I plan to do? Think of everything we've talked about so far...
obviously... Find heart rate at beginning middle and end of trials. Make sure that they use all of their energy systems. Make sure that it is physically possible to do the strokes. Because I don't want anyone to quit halfway through... So my rough EI idea the subjects do a warm-up
to try and get very close to that oxygen consumption steady rate that we talked about earlier. That way the first two energy systems won't play much
of a role, and make my results more accurate. Swimming is fun fun fun :D I have been swimming for a very long time, and
I have learned from lots of different teachers One thing I have noticed is that they don't all teach
everything exactly the same... how odd... One day I was asked to do an IRP, and after a few moments
of critical thinking I decided to do it on something that was
bugging me. Which teacher was right?
The one from the Lifesaving Society?
Or the Red Cross?
Or maybe the speed swimming teachers, must be them right?
I had to find out for sure, it was... an adventure? Yeah. So that's why I did my IRP on this swimming stroke topic. However, after deciding to do my project on
something that would be simple... I learned that
there was a whole bunch more know about swimming. Questions?? Brian Woytowich Will your experiment involve active testing of each of these swim
strokes for the full distances outlined in your article? No. Why would a stroke like the polo crawl not be taught by Red Cross
or Lifesaving Society? As it could be useful in transporting objects
in the water. Actually in fact this version of the front crawl is taught
in the Lifesaving Society. Siddarth kalagnanam Ruiyi Guo Do you intend to use a combination of these strokes or
only choose one out of this list? Are you planning to test every stroke for every distance or are
you choosing strokes that will fit best for each distance? I will choose some from the list. I won't know exactly which swim stroke is best for each distance, so likely just set one distance and extrapolate from there. Are there any common movements or other factors that make a swim stroke efficient? Are different swim strokes designed specifically for a certain purpose
such as speed, or training different parts of the body? There are lots of theories, like circular flowing motion
versus starting and stopping. Swim strokes target many parts of the body during exercise. However some
are more of a workout than others in different parts of the body.
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