Table 2.
Associations Between Actigraphy-Assessed Sleep Efficiency and Executive Function by Median Split of Physical Activity Variables
| DSST | Trails B* | |||
|---|---|---|---|---|
| B (SE) | p value | B (SE) | p value | |
| Low physical activity (N = 61) | ||||
| Accelerometer counts, ct·min−1·d−1† | 0.86 (0.21) | <0.001 | −0.03 (0.01) | 0.002 |
| Accelerometer MVPA, min† | 0.80 (0.20) | <0.001 | −0.02 (0.01) | 0.006 |
| Diary LTPA, min·d−1† | 0.63 (0.23) | 0.008 | −0.02 (0.01) | 0.08 |
| Diary LTPA, MET·h·d−1† | 0.52 (0.23) | 0.03 | −0.02 (0.01) | 0.04 |
| High physical activity (N = 60) | ||||
| Accelerometer counts, ct·min−1·d−1† | −0.12 (0.20) | 0.56 | 0.004 (0.01) | 0.56 |
| Accelerometer MVPA, min† | −0.13 (0.21) | 0.55 | 0.003 (0.01) | 0.69 |
| Diary LTPA, min·d−1† | 0.11 (0.20) | 0.54 | −0.003 (0.01) | 0.57 |
| Diary LTPA, MET·h·d−1† | 0.25 (0.21) | 0.24 | −0.01 (0.01) | 0.20 |
Notes: Covariates: age, education, body mass index, hypertension, and depressive symptoms. DSST = Digit Symbol Substitution Test; LTPA = leisure-time physical activity; MET = metabolic equivalent; MVPA = moderate to vigorous physical activity; Trails B = Trail Making Test B.
*Log transformed.
†Square root transformed.