Table 3.

Kinematic indices of the breaststroke kick propulsion phase and their partial correlations with swimming speed (V50) and leg movement cycle length (KL) with age control.

Statistically significant correlations are marked as follows: p<0.05^*, p<0.01^**.

Indices	dH [m]	dA [m]	drH [%]	drA [%]	VHmax [m·s−1]	VHaver [m·s−1]
	0.32±0.03	0.29±0.04	0.52±0.05	0.48±0.05	1.54±0.11	1.16±0.08
V 50 [m·s−1]	0.67 **	−0.19	0.46 *	−0.46 *	0.58 **	0.78 **
KL [m]	0.63 **	−0.23	0.46 *	−0.46 *	0.21	0.39 *