Table 9 Functional classes by LUCAS Functional Ability Index (LUCAS FAI) and age groups 80 years and over
Gait Parameter | Male | Female | ||||||
|---|---|---|---|---|---|---|---|---|
Functional ability | 80y+  Total | 80y+  Robust | 80y+  Transient | 80y+  Frail | 80y+  Total | 80y+  Robust | 80y+  Transient | 80y+  Frail |
n = 84 | n = 6 | n = 50 | n = 28 | n = 150 | n = 7 | n = 70 | n = 73 | |
Pref n = 234 | ||||||||
 1. Velocity [cm/s] | 102.2 ± 23.9 | 131.4 ± 18.0 | 104.9 ± 23.1 | 91.2 ± 19.9 | 99.7 ± 20.2 | 109.8 ± 21.3 | 107.9 ± 18.6 | 90.8 ± 17.8 |
 2. Stride length [cm] | 117.0 ± 21.2 | 143.2 ± 10.2 | 120.2 ± 19.1 | 105.7 ± 19.9 | 108.4 ± 16.1 | 114.1 ± 16.4 | 114.9 ± 14.7 | 101.5 ± 14.7 |
 3. Walk ratioa [cm/(steps/min)] | 0.56 ± 0.09 | 0.65 ± 0.04 | 0.58 ± 0.08 | 0.51 ± 0.10 | 0.49 ± 0.07 | 0.49 ± 0.05 | 0.51 ± 0.06 | 0.48 ± 0.07 |
 5. Double support time [ms] | 343 ± 74 | 276 ± 51 | 338 ± 75 | 365 ± 65 | 318 ± 68 | 290 ± 51 | 295 ± 63 | 342 ± 67 |
 8. Stride length CVb [%] | 5.0 ± 2.8 | 3.5 ± 1.8 | 4.3 ± 2.1 | 6.5 ± 3.5 | 4.7 ± 2.8 | 3.6 ± 1.0 | 4.2 ± 2.0 | 5.3 ± 3.5 |