Table 3. Correlation coefficients between analyzed kinematic variables in the turn 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 0.18 0.36 0.57 0.38 -0.38 -0.43 0.35 0.55 0.68# -0.59 -0.27 0.68# -0.53 -0.37 0.07 UW Time 0.98†  0.11 0.89†  -0.04 -0.13 0.44 0.41 -0.39 -0.56 -0.59 0.29 -0.76# -0.60 0.42 UW Distance 0.17 0.92†  -0.14 -0.18 0.49 0.50 -0.24 -0.65 -0.61 0.40 -0.82†  -0.63 0.43 KF 0.49 -0.42 -0.82†  0.23 0.79# 0.50 -0.23 -0.69# 0.21 -0.12 -0.62 -0.20 Kick count -0.40 -0.52 0.49 0.72# -0.11 -0.58 -0.82†  0.35 -0.71# -0.78# 0.34 Deckick 0.56 -0.29 -0.64 -0.16 0.08 0.53 -0.29 0.24 0.56 -0.07 Glide time -0.32 -0.80# -0.46 0.14 0.70# -0.16 0.13 0.59 -0.04 Initial-vxhead 0.59 0.04 -0.57 -0.36 0.43 -0.45 -0.32 0.39 First-vxhead 0.36 -0.39 -0.77# 0.42 -0.47 -0.80# 0.03 Last-vxhead -0.12 -0.05 0.38 -0.10 -0.18 -0.27 Initial-vyhead 0.33 -0.76# 0.66 0.35 -0.62 First-vyhead -0.35 0.50 0.85†  -0.14 Last-vyhead -0.61 -0.40 0.42 Initial-BA 0.67# -0.23 First-BA 0.12 UW, underwater; vxmean, forward velocity; KF, Kick frequency, Deckick, the mean deceleration from the first to the last kick; Initial-vxhead, the forward head velocity at the feet entry; First-vxhead, the mean forward velocity during the first kick; Last-vxhead, the mean forward velocity during the last kick; Initial-vyhead, the upward head velocity at the feet entry; First-vyhead, the mean upward velocity during the first kick; Last-vyhead, 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