Table 1

Task performance
Younger group Older group
Single-task Dual-task Single-task Dual-task
Number of steps a 40.8 ±9.1 39.5 ± 9.7 45.5 ± 11.0 40.1 ± 14.0*
Total number answered b 8.1 8.3 7.7 8.0
(2.6-19.7) (2.0-19.3) (4.0-20.3) (3.3-24.0)
Proportion performed correctly b 96.3 96.0 85.4** 87.5**
(72.9-100) (71.4-100) (41.7-100) (52.9-100)

a: mean ± S.D., b: Median (range), *: significant different between single-task and dual-task (P < 0.05), **: significant different between younger and older group (P < 0.01).

The number of steps was significantly decreased in dual-task compared with single task in the older group. The proportions performed correctly were significantly lower in the older group than in the younger group in both tasks.

Ohsugi et al.

Ohsugi et al. BMC Neuroscience 2013 14:10   doi:10.1186/1471-2202-14-10

Open Data