. Author manuscript; available in PMC: 2016 Feb 1.

Published in final edited form as: Aging Clin Exp Res. 2015 May 21;28(1):121–130. doi: 10.1007/s40520-015-0372-x

Table 2.

Means (M), 95 % confidence intervals (CI) with corresponding p value and partial eta-squared ( $η_{p}^{2}$ ) of dual-task cost (DTC) on duration and peak velocity (Peak_vel) during cognitive (COUNT), manual (CARRY), cognitive–manual (CtCARRY), and phone (DIAL) conditions for young (Y) and old (O)

Condition, variable, and age

Phase

p-value

η_{p}^{2}

Straight-Walk

Sit-to-Stand

Turn

Turn-to-Sit

(Phase main effect, Age main effect, Age by Phase interaction)

COUNT

%DTE_Duration

−14.31

[−22.65, −5.97]

1.10

[−7.24, 9.433]

−0.96

[−9.29, 7.39]

−1.64

[−9.98, 6.70]

(<0.001, 0.057, 0.429)

(0.291, 0.054, 0.041)

−24.90

[−33.24, −16.57]

−2.60

[−10.94, 5.74]

−10.97

[−19.31, −2.63]

−0.18

[−8.51, 8.16]

%DTE_Peak_vel

−6.01

[−13.88, 1.86]

5.60

[−2.27, 13.47]

−2.02

[−9.26, 5.22]

−2.07

[−9.94, 5.80]

(0.009, 0.472, 0.891)

(0.168, 0.008, 0.01)

−7.72

[−14.95, −0.48]

5.38

[−1.86, 12.61]

−7.45

[−14.69, −0.21]

−2.62

[−9.85, 4.62]

CARRY

%DTE_Duration

−6.44

[−17.22, 4.35]

−17.87

[−28.66, −7.08]

−37.45

[−48.24, −26.66]

−26.56

[−37.35, −15.77]

(<0.001, 0.139, 0.179)

(0.289, 0.033, 0.071)

−25.47

[−36.26, −14.68]

−12.98

[−23.76, −2.19]

−40.92

[−51.71, −30.14]

−31.83

[−42.62, −21.05]

%DTE_Peak_vel

−7.61

[−13.55, −1.66]

−38.51

[−44.46, −32.57]

−30.34

[−35.81, −24.87]

−31.49

[−37.43, 25.54]

(<0.001, 0.655, 0.112)

(0.589, 0.003, 0.090)

−16.93

[−22.40, −11.46]

−37.19

[−42.66, −31.72]

−26.92

[−32.39, 21.45]

−30.61

[−36.07, −25.14]

CtCARRY

%DTE_Duration

−15.51

[−28.89, −2.124]

−19.60

[−32.98, −6.22]

−34.20

[−47.58, −20.81]

−25.60

[−38.98, −12.22]

(<0.004, 0.019, 0.021)

(0.182, 0.08, 0.136)

−49.86

[−63.24, −36.47]

−11.87

[−25.26, 1.51]

−47.51

[−60.89, −34.13]

−31.16

[−44.54, −17.78]

%DTE_Peak_vel

−7.72

[−14.75, −0.70]

−43.63

[−50.65, −36.60]

−25.43

[−31.89, −18.97]

−26.26

[−33.28, −19.23]

(0.001, 0.410, 0.002)

(0.423, 0.011, 0.211)

−22.31

[−28.77, −15.85]

−31.24

[−37.70, −24.77]

−28.68

[−35.14, −22.22]

−28.90

[−35.63, −22.44]

DIAL

%DTE_Duration

−17.79

[−28.15, −7.42]

−8.50

[−18.87, 1.86]

−24.43

[−34.80, −14.07]

−12.88

[−23.24, −2.51]

(<0.001, 0.023, 0.003)

(0.422, 0.075, 0.191)

−42.44

[−52.81, −32.08]

0.208

[−10.16, 10.57]

−45.34

[−55.72, −34.99]

−10.07

[−20.44, 0.29]

%DTE_Peak_vel

−17.72

[−26.62, −8.82]

−28.39

[−37.28, −19.49]

−21.27

[−29.45, −13.08]

−20.21

[−29.11, −11.31]

(0.442, 0.200, 0.002)

(0.041, 0.026, 0.204)

−24.54

[−32.73, −16.36]

−4.63

[−12.81, 3.56]

−24.82

[−33.00, −16.63]

−17.60

[−25.79, −9.42]