Table 1

Dual-task costs of the constituent tasks in Exp. A and B.
Exp.
 task combination
 task
 young Ss.
 elderly Ss.
 t
A
 walko + memo
 walko
 -1.21 ± 5.71
 1.22 ± 6.20
 1.17n.s.




memo
 3.84 ± 12.95
 6.78 ± 15.91
 0.58n.s.


walko+checkgw
 walko
 22.46 ± 8.58
 28.64 ± 11.11
 1.80n.s.




checkgw
 28.86 ± 11.67
 39.44 ± 20.71
 1.84n.s.
B
 walk + check/g
 walk
 11.20 ± 6.37
 13.84 ± 7.87
 1.04n.s.




checkg
 0.44 ± 12.00
 14.53 ± 17.31
 2.67*


walk + checkgw
 walk
 16.02 ± 8.11
 16.96 ± 10.61
 0.28n.s.




checkgw
 1.34 ± 17.25
 10.61 ± 29.00
 1.09n.s.


walko + check/g
 walko
 16.35 ± 7.19
 18.34 ± 9.15
 0.68n.s.




checkg
 28.07 ± 12.82
 44.81 ± 10.68
 4.01***


walko + checkgw
 walko
 23.83 ± 8.32
 26.85 ± 13.80
 0.74n.s.




checkgw
 28.77 ± 16.36
 39.36 ± 24.11
 1.45n.s.

Data columns indicate the mean ± standard deviation of DTC in young and elderly subjects, and the t-scores of t-tests, with n.s., *, and *** denoting p > 0.05, p < 0.05, and p < 0.001.

Bock Journal of NeuroEngineering and Rehabilitation 2008 5:27   doi:10.1186/1743-0003-5-27