Serial -7 walking
There were significant differences between groups in serial-7 performance during walking (p = 0.042, partial η2 = 0.111). The older adults had fewer correct responses compared to the young groups (10.4, 95% CI: 7.2–13.6 vs. 15.3, 95% CI: 13.2–17.5, p = 0.042) but not compared to the middle-aged group (13.8, 95% CI: 10.6–17.0, p = 0.262), and there was no significant difference in serial-7 walking between the middle-aged and young groups (p = 0.262).