Table 4.
Reliability in the 10-Hour-From-Awakening Time Framea
| Measurement Tool | Activity Intensity | Duration, min/d, X̅ (SD) | Differenceb (95% CI) | Significance of F Testc | ICC (95% CI) | |
|---|---|---|---|---|---|---|
| Week 1 | Week 2 | |||||
| ACT | Light (min/d) | 50.3 (29.7) | 47.3 (28.9) | 2.9 (–6.7, 12.5) | .53 | .88 (.71, .95) |
| Moderate (min/d) | 7.7 (8.5) | 6.7 (6.7) | 1.0 (–1.7, 3.6) | .45 | .85 (.63, .94) | |
| Light to moderate (min/d) | 57.9 (35.8) | 54.0 (34.7) | 3.9 (–7.5, 15.4) | .48 | .89 (.72, .95) | |
| No. of steps/d | 3,325 (1,484) | 3,238 (1,316) | 88 (–287, 462) | .63 | .92 (.80, .97) | |
| SWA | Light (min/d) | 102.1 (67.2) | 109.6 (62.9) | –7.5 (–22.4, 7.5) | .31 | .94 (.86, .98) |
| Moderate (min/d) | 36.5 (35.5) | 34.9 (27.7) | 1.5 (–7.1, 10.2) | .71 | .92 (.80, .97) | |
| Light to moderate (min/d) | 138.6 (94.7) | 144.7 (83.1) | –6.1 (–27.4, 15.1) | .56 | .94 (.85, .98) | |
| No. of steps/d | 4,501 (2,895) | 4,515 (2,422) | –14 (–666, 638) | .97 | .95 (.87, .98) | |
a
Daily physical activity duration and intraclass correlation coefficient (ICC) in 21 participants with matching data from the Actigraph (ACT) and the SenseWear Armband (SWA) in the 10-hour-from-awakening time frame during the 2 weeks of data collection.
b
Difference between week 1 and week 2 and corresponding 95% confidence interval (CI).
c
Significance of the F test from the analysis of variance used to calculate ICCs.