Table 1 Mean, standard deviation (time), two-way ANOVA (sex, classification, and interactions) with Bonferroni in 50 m and 100 m individual freestyle in old starting platform.

	Time (s)				Block time (s)
	Men (m) (n=511)		Women (w) (n=510)		Men (m) (n=511)				Women (w) (n=510)
	Mean (SD)		Mean (SD)		Mean (SD)				Mean (SD)
50-m freestyle
1st-3rd (n=96)	22.10 (.23)		24.94 (.45)		.73 (0.06)				.76 (0.05)
4th-8th (n=157)	22.45 (.27)		25.46 (.41)		.75 (0.07)				.77 (0.06)
9th-16th (n=256)	22.77 (.36)		25.86 (.44)		.76 (0.06)				.79 (0.06)
100-m freestyle
1st-3rd (n=96)	48.64 (.43)		54.40 (.64)		.75 (0.06)				.77 (0.06)
4th-8th (n=160)	49.37 (.50)		55.31 (.66)		.76 (0.05)				.78 (0.06)
9th-16th (n=256)	50.07 (.68)		56.18 (.79)		.77 (0.05)				.79 (0.06)
Whole sample by sex and classification	Sex				Classification
	Men (m)		Women (w)		1st -3rd (a)		4th -8th (b)		9th -16th (c)
50-m freestyle	.75 (.06)		.78 (.06)		.75 (0.05)		.76 (0.07)		.77 (.06)
100-m freestyle	.76 (.05)		.79 (.06)		.76 (0.06)		.77 (0.05)		.78 (.05)
Main effects and interactions	Sex				Classification			Sex * Classification
	F	Diff	p		F	Diff	p	F	p
50-m freestyle	18.141	m<w	<.001a		5.205	a<c	.006c	.567	.568
100-m freestyle	24.035	m<w	<.001b		4.100	a<c	.017	.085	.918

a: effect size=-0.50;b: effect size=-0.54;c: effect size=-0.35