Table 3.
Mean Physical Functional Ability by Fatigability Status
| Performance Deterioration | Perceived Exertion | |||||
|---|---|---|---|---|---|---|
| Functional Ability | Slowed (n=134) | Maintained (n=454) | p-valuea | RPE =10 (n=149) | RPE <10 (n=321) | p-valuea |
| Walking ability scoreb | 6.61 | 7.95 | <.001 | 7.26 | 8.05 | <.001 |
| Usual gait speedc, (m/s) | 1.05 | 1.10 | .048 | 1.03 | 1.13 | <.001 |
| Rapid gait speedc, (m/s) | 1.58 | 1.64 | .088 | 1.55 | 1.69 | <.001 |
| 10 chair standsd, (stands/s) | 0.38 | 0.42 | .023 | 0.36 | 0.43 | <.001 |
| Grip strengthe, (kg) | 31.7 | 31.8 | .798 | 30.7 | 32.9 | <.001 |
RPE= rating of perceived exertion
a
adjusted for age, sex, race, walking activity, obesity and smoking history
b
reported walking ability index derived from a series of self-report questions can range from 0 to 9 (see text) where 0=unable to walk ¼ mile and 9=very easy to walk 1 mile
c
fastest of two trials over 6m
d
persons unable to complete 10 stands were assigned a value of zero
e
highest value out of a maximum of three trials with each hand adjusted for height