Between 400 m and 50 m pace, Table I, swimming speed significantly increased (from 1.15 ± 0.12 m·s−1 to 1.36 ± 0.14 m·s−1; P < 0.05; ES = 1.61; 95% CI = 0.10–0.32), as did stroke frequency (from 0.65 ± 0.08 Hz to 0.82 ± 0.11 Hz; P < 0.05; ES = 1.77; 95% CI = 0.09–0.25) and kick frequency (from 1.86 ± 0.31 Hz to 2.38 ± 0.32 Hz; P < 0.05; ES = 1.65; 95% CI = 0.27–0.78).