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Old 11-26-2012
rwilkes rwilkes is offline
Join Date: Jan 2009
Posts: 73
Default Turns.... And SPL

Hi all,

Just a quick question. Does anyone find that their spl goes up after the turn ???

Recently I have bee doing sets of 25m and 50m, with the TT between 1.30 and 1.35

Each 25 was 18 spl, starting from both the shallow end and the deep end.

However, when doing sets of 50m, it's 18spl, turn then on average about 20 for the 2nd 25

Do you think it is the turn or balance after the turn ??? Very frustrating, because my aim is to do 18 spl for every length.

Your thought would be very helpful !


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Old 11-26-2012
CoachStuartMcDougal's Avatar
CoachStuartMcDougal CoachStuartMcDougal is offline
Join Date: Jan 2012
Posts: 1,353

Hi Russ,

Your inconsistency in SPL is mostly likely due to wall push not stroke. And typically push-off starting set will be your best or longest with lowest SPL, so 2nd, 3rd laps you may add a stroke or two is not uncommon. If you have access to 50m pool, most accurate way to get a consistent count is count from 25m line without the aid of a wall push, i.e first arm crosses 25m line is *one* and count to the end of the lane. If no 50m pool, you can measure your 2nd wall push after the flip/turn, take a peek at lane rope location where recovery hand enters - measure that distance (wall to hand dip) and see how consistent of a push you have. And yup, I have been seen in the pool with tape measure. IF you have a swim partner, have them mark the location for you (on hand dip) and measure.

I did a blog on this subject, Getting Immediate Feedback of Pace and SPL There is a spreadsheet you can download to calculate you true SPL without the wall push.

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Old 11-26-2012
andyinnorway andyinnorway is offline
Senior Member
Join Date: Mar 2011
Posts: 1,680

1 less SPL for the first length is normal
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