Table 1.

Largest (d_max) and mean (d_mean) values of balancing-time duration for the skilled subjects (skilled performers; Subjects 1–6).

	dmax (S)	dmean (S)	# of trials
Subject 1	558	530	2
Subject 2	297	263	3
Subject 3	600	453	2
Subject 4	369	293	3
Subject 5	500	408	2
Subject 6	464	283	3

d_max, the longest balancing-time duration for each skilled subject among all the trials. d_mean, the mean value of the balancing-time duration over the skilled trials that were used for assembling the 10 60-s data segments. # of trials, the number of trials that was used for collecting the ten 60-s data segments. A longer balancing duration of the best and second- and third-best trials led to a smaller number of trials necessary for collecting the 10 data segments. See the definitions of d_max and d_mean in the main text.