Originally Posted by wie
From the TI-easy-freestyle-manual.pdf page 5:
I wonder if this is correct.
Why then are elite swimmers so muscular and do so much muscle training?
Is this just for better streamlining?
Swimming is an incredible complex event. To be able in one sentence to capture the essence of swimming is futile.
What is the definition of stroking power, how is it measured? If the power stroke did not measure hip rotation, leg propulsion, core efforts, flotation etc. then we are comparing apples to oranges. All things being equal, one person with a stronger core will probably swim faster!? And core power is not necessarily stroking power! You get my point.
Streamlining becomes more important the faster you go in a fluid (water and air). When you go from 1 mph to 2 mph the drag increases 4X, at 3 mph it is 9X. So if you can reduce your X (drag variable from lets say 1.2 to .9) then you will swim faster with the same stroke power.
Now if you reduce your X (drag variable) and increase your stroke power, then you will swim even faster.
But beware of adding more power, in my 180 hp airplane I can cruise at 200 MPH, to increase the cruise to 220 mph I would need to double the HP to 360! Power is produced by energy, in an airplane 200 mph is 10 gallons of fuel an hour and 220 mph would be 20 gallons of fuel and hour. So for swimming or flying, to increase speed in a fluid, the easiest and cheapest way is to reduce drag or to streamline. Conserve energy.
If exerting tremendous amounts of power is not a concern, i.e., sprinting, then OK, but if you need to get out of the lake and then do a bike ride and a run, you need to conserve excess power to be used later.