Table 2. Correlation coefficients between analyzed kinematic variables in the start segment.
|
UW Time |
UW Distance |
KF |
Kick count |
Deckick |
Glide time |
Initial-vxhead |
First-vxhead |
Last-vxhead |
Initial-vyhead |
First-vyhead |
Last-vyhead |
Initial-BA |
First-BA |
Last-BA |
UW-vxmean |
0.005 |
0.21 |
0.21 |
0.19 |
-0.19 |
-0.27 |
-0.24 |
0.84† |
-0.55 |
-0.34 |
-0.31 |
0.51 |
-0.32 |
-0.26 |
0.56 |
UW Time |
|
0.98† |
-0.28 |
0.84† |
-0.12 |
-0.15 |
-0.06 |
0.58 |
0.18 |
-0.48 |
-0.76# |
-0.008 |
-0.55 |
-0.70# |
0.01 |
UW Distance |
|
-0.22 |
0.87† |
-0.16 |
-0.23 |
-0.15 |
0.68# |
0.35 |
-0.62 |
-0.81† |
0.12 |
-0.60 |
-0.74# |
0.10 |
KF |
|
0.24 |
-0.57 |
-0.70# |
-0.09 |
0.39 |
-0.04 |
0.55 |
-0.15 |
-0.003 |
0.51 |
-0.28 |
-0.49 |
Kick count |
|
-0.47 |
-0.60 |
-0.22 |
0.86† |
0.19 |
-0.36 |
-0.85† |
0.12 |
-0.36 |
-0.88† |
-0.16 |
Deckick |
|
0.59 |
-0.16 |
-0.51 |
0.08 |
-0.11 |
0.31 |
0.21 |
-0.003 |
0.45 |
0.38 |
Glide time |
|
0.23 |
-0.82† |
-0.19 |
-0.12 |
0.57 |
-0.25 |
0.04 |
0.69# |
0.26 |
Initial-vxhead |
|
-0.23 |
-0.27 |
0.02 |
0.25 |
0.06 |
0.25 |
0.17 |
0.09 |
First-vxhead |
|
0.38 |
-0.36 |
-0.81† |
0.26 |
-0.37 |
-0.86† |
-0.08 |
Last-vxhead |
|
-0.44 |
-0.35 |
0.60 |
-0.43 |
-0.33 |
0.32 |
Initial-vyhead |
|
0.32 |
-0.31 |
0.84† |
0.20 |
-0.45 |
First-vyhead |
|
-0.34 |
0.29 |
0.89† |
-0.12 |
Last-vyhead |
|
-0.25 |
-0.29 |
0.35 |
Initial-BA |
|
0.25 |
-0.28 |
First-BA |
|
0.24 |
UW, underwater; vx
mean, forward velocity; KF, Kick frequency, Dec
kick, the mean deceleration from the first to the last kick; Initial-vx
head, the forward head velocity at the feet entry; First-vx
head, the mean forward velocity during the first kick; Last-vx
head, the mean forward velocity during the last kick; Initial-vy
head, the upward head velocity at the feet entry; First-vy
head, the mean upward velocity during the first kick; Last-vy
head, the mean upward velocity during the last kick; Initial-BA, the angle of the upper body at the feet entry; First-BA, the mean angle of the upper body during the first kick; Last-BA, the mean angle of the upper body during the last kick;#, p < 0.01;† , p < 0.001