Table 4. The post-hoc comparisons of the total integrated electromyography (TiEMG) and selected kinematic variables among four different backstroke-to-breaststroke turns.
Variables
Kruskal-Wallis H test
Mann-Whitney U test
Open vs. somersault
Open vs. bucket
Open vs. crossover
Somersault vs. bucket
Somersault vs. crossover
Bucket vs. crossover
H
Sig.
Z
Sig.
Z
Sig.
Z
Sig.
Z
Sig.
Z
Sig.
Z
Sig.
TiEMGCBRO (%)
32.95
0.001
98.00
0.26
72.00
0.04
10.00
0.001
61.00
0.01
15.50
0.001
15.00
0.001
TiEMGLLRO (%)
22.18
0.001
53.00
0.001
70.00
0.03
19.00
0.001
120.0
0.76
57.00
0.001
55.50
0.001
TiEMGCBPO (%)
27.72
0.001
66.00
0.02
109.50
0.49
40.00
0.001
74.00
0.04
11.00
0.001
25.00
0.001
TiEMGLLPO (%)
1.54
0.67
110.00
0.49
124.00
0.88
114.00
0.59
119.00
0.73
96.00
0.23
105.50
0.40
Rotation time (s)
8.57
0.04
59.00
0.001
126.0
0.94
88.00
0.13
69.00
0.03
98.00
0.26
94.00
0.20
Push-off time (s)
2.98
0.39
98.50
0.26
126.50
0.96
96.00
0.22
97.50
0.25
122.50
0.84
93.00
0.18
Tuck index
4.73
0.19
74.00
0.001
96.00
0.23
82.50
0.09
114.00
0.60
112.00
0.55
115.50
0.64
Final push-off velocity (m/s)
2.79
0.43
122.00
0.82
103.50
0.36
105.00
0.39
116.50
0.67
98.50
0.27
86.50
0.12
TiEMG CBRO: total iEMG of core body muscles during rotation; TiEMG LLRO: total iEMG of lower limbs during rotation; TiEMGCBPO: total iEMG of core body muscles during push-off; TiEMGLLPO: total iEMG of lower limbs during push-off.