Table 5.
Percentage of performance improvement and intra-swimmer coefficient of variation between rounds in the women Top16, semifinalists and finalists.
Event
Swimmers
E-H
H-SF
SF-F
p-value
%IMP
%CV
p-value
%IMP
%CV
p-value
%IMP
%CV
Fr50
Top16
†
<0.001
-1.38±1.10
1.01
0.002
0.36±0.75
0.59
-
-
-
Semi-finalist
‡
0.050
-0.82±1.26
1.07
0.754
0.13±0.42
0.48
-
-
-
Finalist
<0.001
-1.35±0.45
0.96
<0.001
0.97±0.29
0.68
1.000
1.04±0.47
0.26
Bk50
Top16
0.206
-0.74±1.51
0.88
<0.001
0.81±0.56
0.57
-
-
-
Semi-finalist
1.000
-0.14±1.43
0.74
0.013
0.58±0.40
0.41
-
-
-
Finalist
0.189
-1.34±1.41
1.02
0.013
1.03±0.62
0.73
0.433
-0.26±0.35
0.26
Br50
Top16
†
1.000
-0.37±1.64
0.97
0.844
0.32±1.09
0.54
-
-
-
Semi-finalist
‡
0.559
-0.54±0.96
0.66
1.000
0.05±0.58
0.32
-
-
-
Finalist
1.000
0.40±0.52
1.24
1.000
0.55±1.40
0.73
1.000
0.06±0.45
0.24
Fly50
Top16
0.012
-0.81±0.95
0.73
0.004
0.86±0.87
0.69
-
-
-
Semi-finalist
0.429
-0.50±0.86
0.48
0.119
0.52±0.58
0.45
-
-
-
Finalist
0.090
-1.12±0.99
0.99
0.074
1.20±1.01
0.94
1.000
0.21±0.66
0.42
Fr100
Top16
<0.001
-1.22±1.02
0.99
0.003
0.66±0.65
0.53
-
-
-
Semi-finalist
0.314
-1.36±0.79
0.84
1.000
0.68±0.62
0.23
-
-
-
Finalist
<0.001
-1.61±0.56
1.15
<0.001
1.19±0.31
0.83
1.000
0.13±0.34
0.23
Bk100
Top16
<0.001
-1.18±0.71
0.84
0.040
0.32±0.45
0.33
-
-
-
Semi-finalist
0.001
-1.42±0.65
1.02
0.790
0.19±0.42
0.28
-
-
-
Finalist
0.044
-0.95±0.72
0.67
0.168
0.46±0.47
0.38
0.957
-0.36±0.65
0.42
Br100
Top16
†
0.002
-1.21±1.06
0.95
0.017
0.55±0.66
0.45
-
-
-
Semi-finalist
‡
0.058
-1.01±0.85
0.79
1.000
0.17±0.48
0.26
-
-
-
Finalist
0.097
-1.39±1.25
1.09
0.029
0.89±0.62
0.62
0.942
-0.21±0.37
0.24
Fly100
Top16
0.003
-1.39±1.34
1.20
0.015
0.69±0.84
0.61
-
-
-
Semi-finalist
0.417
-0.91±1.55
1.01
0.699
0.43±0.93
0.51
-
-
-
Finalist
0.006
-1.87±0.97
1.36
0.039
0.96±0.70
0.72
1.000
0.47±0.85
0.57
Fr200
Top16
†
0.006
-0.97±0.99
0.76
0.005
0.66±0.65
0.56
-
-
-
Semi-finalist
‡
0.771
-0.32±0.69
0.38
0.612
0.38±0.69
0.43
-
-
-
Finalist
0.011
-1.54±0.89
1.10
0.011
0.92±0.53
0.67
1.000
0.09±0.83
0.48
Bk200
Top16
<0.001
-1.83±1.16
1.32
0.044
0.64±0.93
0.62
-
-
-
Semi-finalist
0.020
-1.31±0.98
0.96
0.824
0.39±0.92
0.52
-
-
-
Finalist
0.004
-2.34±1.16
1.68
0.168
0.89±0.92
0.72
0.380
0.40±0.52
0.34
Br200
Top16
<0.001
-1.87±1.14
1.35
<0.001
0.75±0.63
0.54
-
-
-
Semi-finalist
0.035
-1.55±1.29
1.12
0.113
0.44±0.48
0.34
-
-
-
Finalist
0.002
-2.19±0.95
1.57
0.010
1.07±0.62
0.75
1.000
-0.16±0.50
0.23
Fly200
Top16
0.001
-1.55±1.34
1.20
0.005
0.70±0.74
0.58
-
-
-
Semi-finalist
0.037
-1.56±1.32
1.24
1.000
0.15±0.57
0.28
-
-
-
Finalist
0.127
-1.53±1.46
1.15
<0.001
1.26±0.35
0.88
-
-
-
† , n=15
‡, n=7
Fr, freestyle; Bk, backstroke; Br, breaststroke; Fly, butterfly; E, entry times; H, heats; SF, semifinals; F, finals; %, percentage; IMP, performance improvement; CV, intra-swimmer’s coefficient of variation.