examining the fastest race in swimming
DESCRIPTION
Examining the Fastest Race in Swimming. Calvin Lutz. Background on the Race. Shortest/fastest race in Swimming = 50 freestyle Two courses Short Course Yards “SCY” (25 yards/length) Long Course Meters “LCM” (50 meters/length) Most competitive meet in the world U.S. Olympic Trials - PowerPoint PPT PresentationTRANSCRIPT
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Examining the Fastest Race in Swimming
Calvin Lutz
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Background on the RaceShortest/fastest race in Swimming = 50
freestyle
Two courses Short Course Yards “SCY” (25 yards/length) Long Course Meters “LCM” (50 meters/length)
Most competitive meet in the world U.S. Olympic Trials
Most competitive “league” NCCA Division I
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The Race3 easily identifiable components
Reaction TimeEvent TimeStart
Power Track Relay
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Differences between starts?Can test for thisFriedman’s Test Procedure
n=20k=3
Hypothesis Testing
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DataOhio State Invite SCY, November 2012
http://grfx.cstv.com/photos/schools/osu/sports/m-swim/auto_pdf/2012-13/misc_non_event/113012-finals.pdf
2012 Olympic Trials LCM (for 2nd part)http://www.omegatiming.com/Competition?id=
00010C0102FFFFFFFFFFFFFFFFFFFFFF&sport=AQ&year=2012
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Why a Nonparametric Setting?Blocking by swimmer
Could have large outliers, better to look at medians
Normality = NO
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Friedman ResultsS = 19.90 DF = 2 P = 0.000
Rejection of Null Hypothesis
Follow up with Multiple Comparisons
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Follow Up Multiple Comparison obs.dif critical.dif difference1-2 11 15.14086 FALSE1-3 17 15.14086 TRUE2-3 28 15.14086 TRUE
1 = Track Start2 = Power Start3 = Relay Start
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Comparing with OT DataAgain, use nonparametric setting due to the
same reasons as DI.
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A Bunch of RepetitionTest Associations of:
Reaction TimeEvent TimeAge
Test Procedure: KendallBased on signs
Hypothesis Testing
Reason for two-sided approach?
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Reaction Time and Event TimeD1 Men
p-value = 0.7666Olympic Trials: Men
p-value = 0.6456Olympic Trials: Women
p-value = .6702
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Age and TimeD1 Men*
p-value = .01278Olympic Trials: Men*
p-value = .00162Olympic Trials: Women**
p-value = .08727
*= significant at .05 level** = significant at .1 level
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Reaction Time and AgeD1 Men
p-value = .6035Olympic Trials: Men
p-value = 0.3881Olympic Trials: Women**
p-value = .07806
**= significant at .1 level
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Summary of Significant AssociationD1 Men
Age and Time
Olympic Trials MenAge and Time
Olympic Trials WomenAge and Time (.1 level)Reaction Time and Age (.1 level)
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ConclusionSignificant negative association between Age
of a swimmer and their 50 freestyle timei.e. The older you are, the faster you are.
No other significant associations found involving reaction time.
Does the start matter?