Table 1. Descriptive statistics and repeated-measures ANOVA for the most significant variables related to the lunge without and with uncertainty during the action, respectively.

	Without uncertainty	With uncertainty	Mean Differences
Variables	Mean (±SD)	Mean (±SD)	Mean (±SD)	95% CI	Effect Size d
Initial en garde position (tINI)
Vertical position CoM (m)	.898 (.072)	.897 (.081)	.001 (.031)	-.014 to .016	0
Horizontal position CoM (m)	.360 (.078)	.361 (.089)	-.001 (.039)	-.020 to .018	0
Vertical position of the sword´s handle (m)	1.122 (.071)	1.100 (.072)	.019 (.045)	-.003 to .041	.4
Horizontal position of the sword´s handle (m)	.992 (.100)	.998 (.110)	-.006 (.061)	-.036 to .023	.1
Reaction Time, RT(s)	.174 (.016) *	.193 (.041) *	-.019 (.035)	-.037 to -.017	.5
0.2 s from the start of the movement
Horizontal Displacement, sX(CoM) (m)	.026 (.008) *	.022 (.009) *	.004 (.007)	.000 to .007	.6
Horizontal Velocity, vX(CoM) (m·s-1)	.380 (.105) *	.325 (.131) *	.055 (.102)	.004 to .106	.5
Final phase of horizontal acceleration
Acceleration Time, t(ACCELERATION) (s)	.525 (.052) *	.550 (.069) *	-.025 (.416)	-.045 to -.005	9
Horizontal Displacement, sX(CoM) (m)	.404 (.089)	.383 (.092)	.020 (.083)	-.021 to .062	.2
Horizontal Velocity, vX(CoM) (m·s-1)	1.737 (.249)	1.690 (.250)	.047 (.172)	-.039 to .132	.3
Time-equated acceleration phase
Horizontal Displacement, sX(CoM)-truncated (m)	.366 (.085) **	.329 (.078) **	.045 (.063)	.133 to .076	.7
Horizontal Velocity, vX(CoM)-truncated (m·s-1)	1.720 (.259) **	1.601 (.250) **	.119 (.163)	.038 to .200	.7
Contact with the plastron
Reaction Response Time, RRT (s)	.716 (.052) ***	.770 (.098) ***	-.055 (.063)	-.087 to -.023	.9
Movement Time, MT (s)	.542 (.051) *	.581 (.091) *	-.039 (.060)	-.069 to -.093	.6

* < 0.05;** < 0.01;*** < 0.001