Table 3.

Means (M), 95 % confidence intervals (CI) with corresponding p value and partial eta-squared ( ${\eta }_p^2$) of counting performance during cognitive (COUNT) and cognitive–manual (CtCARRY) conditions for young (Y) and old (O)

Condition, variable, and age	Phase
	Straight-Walk		Sit-to-Stand		Turn		Turn-to-Sit		p-value	${\eta }_p^2$
	M	CI	M	CI	M	CI	M	CI	(Phase main effect, Age main effect, Age by Phase interaction)
Simple (COUNT)
Response rate (%)
Y	81.90	[69.63, 94.16]	6.39	[−5.88, 18.65]	51.74	[39.47, 64.00]	29.21	[16.95, 41.48]	(<0.001, 0.072, 0.362)	(0.704, 0.056, 0.054)
O	67.05	[55.35, 78.74]	7.20	[−4.50, 18.89]	35.87	[24.18, 47.57]	28.10	[16.41, 39.80]
Accuracy (%)
Y	97.41	[76.06, 118.75]	30.00	[8.65, 51.35]	100.00	[78.65, 121.35]	83.33	[61.99, 104.68]	(<0.001, 0.104, 0.395)	(0.405, 0.046, 0.050)
O	87.05	[66.69, 107.40]	36.36	[16.01, 56.72]	70.46	[50.10, 90.81]	68.18	[47.83, 88.54]
Complex (CtCARRY)
Response rate (#/s)
Y	82.06	[71.77, 92.35]	8.19	[−2.10, 18.49]	43.68	[33.39, 53.98]	25.69	[15.40, 35.98]	(<0.001, 0.027, 0.159)	(0.770, 0.083, 0.0.86)
O	69.16	[59.35, 78.98]	12.01	[2.20, 21.82]	25.73	[15.91, 35.54]	20.54	[10.73, 30.36]
Accuracy (%)
Y	91.23	[72.12, 110.34]	30.00	[10.89, 49.11]	94.67	[75.56, 113.78]	72.50	[53.39, 91.61]	(<0.001, 0.477, 0.321)	(0.387, 0.009, 0.059)
O	92.10	[73.88, 110.33]	54.55	[36.32, 72.77]	84.85	[66.63, 103.07]	75.76	[57.54, 93.98]

TUG Timed Up-and-Go, COUNT Cognitive task, CARRY Manual task, CtCARRY Cognitive–manual task, DIAL Phone task