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Training Center

Key Points for a Swimming Streamline - Things to check for in a swimmer's streamline
Mat Luebbers
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How important is a streamline to a swimmer? I think it can make a world of difference, particularly in a short-course setting, since streamlines and the idea of reducing drag can be applied to starts, swimming, and turns. My take on swimming and streamlines is they are a way to make a minimum energy investment for a maximum speed return. Not exactly a free lunch for a swimmer, but as close as it gets in the swimming pool. Initiating the first kick or pull is a matter of determining when the swimmer's speed is about to drop from faster than they can swim to their race swimming speed. Experiment with different timing

From a start, the speed gained from the push off of the block and from the force of gravity is faster than the swimmer can actually swim. If they can maintain that speed for any extra duration, and everything else is equal, their overall time for the race could be quicker. And all they had to was perform an improved streamline.

During the swimming portions of a race, any chances to reduce the external forces fighting against the swimmer's forward progress (like drag) can result in a faster race time. If a better body position through a slight adjustment of head position results in decreased drag, then the swimmer just got faster - without putting any real extra effort into moving forward any faster. Other ways to reduce drag include paying attention to hand entry and hand/arm position (both arms!) during the stroke cycle. And don't forget the legs. A wide kick might have more force to it for some swimmers, but it also increase drag, and it is likely that the wide kick's force is working to overcome the drag it creates, resulting in little or no added speed (in other words, a narrow kick could be more efficient).

What about turns? Lot's of chances to reduce drag on those things, open or flip. How is the direction being changed? Is there a loose limb sticking out someplace that is being "dragged" through the water instead of slipped through it? Is water being pushed against or slid through during the direction change? How about the swimmer's push off the pool wall. The swimmer's upper body must be in a streamline shape prior to the initiation of the push to maximize speed off of the wall. As the push-off continues, the swimmer must pull the rest of their body into a streamline so they area able to hold that speed (which should be faster than swimming) for as long as possible.

The easiest place to make a quick change in streamlines is off a wall. These are the things I look for in a streamline after the swimmer as left the wall:

  • One hand aligned on top of the other, with fingers pointing the direction of travel.The little finger and thumb of the top hand wrapped around the lower hand (to allow leverage and to prevent separation).

  • The fingertips stretching and reaching as far forward as possible.

  • The arms extended, pointing the direction of travel, with the biceps behind the ears.

  • The surface from the back of the swimmer's hands, along the arms, then down the shoulders and back should be one (relatively) smooth surface with no "head bump" sticking up on that side.

  • The head bump is on the chest side.

  • The swimmer's arms are actively squeezing in behind the head, as if they are trying to make their elbows touch.

  • The swimmer's core is tight and straight - every muscle pulling in towards the center, trying to make the swimmer longer and thinner.

  • The swimmer's legs are adducted (that is, squeezed in and together) with their toes are pointed.

  • I want to see the swimmer become a strong, long torpedo, rocket, or pencil shape off the wall (and on a start).

We practice streamlines off starts and turns regularly. We include a few push offs that are purposely not streamlined to remind the swimmers how much easier it is when they do perform a great streamline. You can practice and use streamlining techniques every swim workout to help make yourself a better swimmer.




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