Table 2.
RR for Developing Disability Among Adults With Baseline Lower Extremity Symptoms by Physical Activity Thresholds
| Physical activity in minutes/week | Mobility disability above vs below threshold N=1,370 | ADL disability above vs below threshold N=1,460 | ||
|---|---|---|---|---|
| Unadjusted RR (95% CI) | Adjusted RR (95% CI) | Unadjusted RR (95% CI) | Adjusted RR (95% CI) | |
| Optimal threshold | ||||
| MVa ≥55b | – | – | 0.55 (0.44, 0.70) | 0.60 (0.46, 0.78) |
| MVa ≥56c | 0.14 (0.09, 0.20) | 0.21 (0.14, 0.32) | – | – |
| Simple threshold | ||||
| MVa ≥60d | 0.15 (0.10, 0.22) | 0.23 (0.15, 0.35) | 0.56 (0.45, 0.71) | 0.61 (0.47, 0.80) |
a
Total minutes of moderate-to-vigorous (MV) physical activity.
b
Optimal threshold for maintaining ADL disability-free status over 4 years.
c
Optimal threshold for maintaining mobility disability-free status over 4 years.
d
Conceptually easy threshold for public health message.
ADL, activity of daily living.