Table 4: Change in functional measures over twelve weeks ( ).

BaselineSix weeksTwelve weeks value*
Mean ± SDMean ± SDMean ± SD

Usual gait speed (m/sec) 0.001
Rapid gait speed (m/sec) 0.01
POMA summary (0–28) <0.001
Eight foot up and go (sec) 0.05
SF-36 Phys. func. (0–100) 0.59

SD: standard deviation; *for change over twelve weeks, controlling for baseline value of outcome variable and count of baseline diseases/symptoms.