Table 1.
Baseline Participant Characteristic by Quartile of Total MVPA
| Quartile 1 (low) | Quartile 2 | Quartile 3 | Quartile 4 (high) | p for trend | |
|---|---|---|---|---|---|
| (n = 420) | (n = 420) | (n = 424) | (n = 423) | ||
| Men, % | 37.9 | 38.1 | 37.5 | 37.8 | .95 |
| Age, years | 77.5 ± 6.3 | 73.6 ± 5.7 | 72 ± 5 | 70.3 ± 4.6 | <.0001 |
| Education, years | 10.6 ± 2.4 | 11.1 ± 2.4 | 11.4 ± 2.5 | 11.3 ± 2.4 | <.0001 |
| Living alone, % | 13.3 | 14.3 | 13.7 | 11.4 | .37 |
| BMI, kg/m2 | 23.2 ± 3.3 | 23.4 ± 3.3 | 23.2 ± 3.1 | 22.8 ± 2.7 | <.05 |
| Multimorbidity, % | 61.2 | 49.8 | 43.4 | 33.6 | <.0001 |
| Fall experience in the past year, % | 24.8 | 16.7 | 17.7 | 18.2 | <.05 |
| Low extremity limitation, % | 25.0 | 13.1 | 7.3 | 5.0 | <.0001 |
| Cognitive impairment, % | 9.1 | 6.0 | 4.0 | 2.4 | <.0001 |
| Current smoker, % | 9.5 | 9.1 | 6.8 | 3.8 | <.001 |
| Current drinker, % | 32.1 | 37.9 | 39.6 | 45.4 | <.0001 |
| Accelerometer wear time, min/d | 816.9 ± 107.3 | 834.3 ± 102.5 | 843.5 ± 100.5 | 861.7 ± 106.2 | <.0001 |
| Total MVPA, min/d | 10.2 (5.7 - 14.7) | 28.0 (23.7 - 33.7) | 48.4 (42.8 - 54.9) | 84 (70.3 - 100.8) | <.0001 |
| MVPA in bouts of ≥10 min, min/d | 0 (0 - 1.7) | 5.0 (1.4 - 10.5) | 15.0 (7.5 - 23.5) | 38.1 (22.6 - 56.6) | <.0001 |
| MVPA in bouts of 1–9 min, min/d | 8.8 (4.9 - 12.9) | 22.3 (17 - 26.5) | 33.0 (23.3 - 40.4) | 47.2 (32 - 60.9) | <.0001 |
| Total LPA, min/day | 280.4 ± 93.8 | 327.6 ± 86 | 349.8 ± 96.1 | 370 ± 92.8 | <.0001 |
| LPA in bouts of ≥10 min, min/d | 122.6 ± 73.3 | 140.9 ± 66.9 | 147.8 ± 73.6 | 143.5 ± 67.3 | <.0001 |
| LPA in bouts of 1–9 min, min/d | 157.8 ± 42 | 186.6 ± 40.2 | 201.9 ± 41.8 | 226.5 ± 45.3 | <.0001 |
Note: Continuous variables are represented as mean ± standard deviation or median (IQR).
The quartile cut points were 16.9, 34.8, and 57.8 min/d for men and 20.6, 40.0, and 64.1 min/d for women.
BMI = body mass index; LPA = light physical activity; MVPA = moderate-to-vigorous physical activity.