DPS Vs. Tempo

If a swimmer rotates significantly in a Freestyle, it’s going to take a longer amount of time each stroke because of that larger distance per stroke, so because you’re rotating and increasing the arm length it’s just going to take longer for that arm to go through one full stroke cycle, which is, if you didn’t do that, it would take you a shorter amount of time. How do you figure out that balance? I like to put data and some numbers to answer that because I feel like it makes it easier to be able to answer these questions. We’re going to do a little case study here, if we have one swimmer swimming with a rotating stroke it say that their tempo is at 60 strokes per minute, which isn’t super high and equates to one stroke per second, they’re going to travel on average about 1.5 meters for each stroke itself, which is going to give them an average velocity of 1.5 meters per second. Once again velocities, meters distance over time. If you compare that 1.5 meters per second to a swimmer who’s swimming without rotation to say a swimmer, swimming at 90 strokes per minute which is a lot faster, as far as tempo is concerned, which equates to one stroke about every point .67 seconds, which is very very fast. They’re going to travel on average only about 1.2 meters for each stroke, which gives them an average output of a velocity of 1.8 meters per second. So you can see here, basically they increase the tempo, which then decreases the ability for them to thrive on a distance perspective per stroke, but overall the velocity output itself is faster so it’s a 1.8 without rotation and it’s a 1.5 with rotation if you’re able to increase your tempo as much as these two swimmers did.