TABLE 2.
Results from multilevel models of inter‐ and intra‐individual associations between daytime physical activity and the following night’s sleep, while adjusting for covariates
| Predictors | Bedtime | Wake‐up time | TST | SE | WASO | SOL | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimates | CI (95%) | Estimates | CI (95%) | Estimates | CI (95%) | Estimates | CI (95%) | Estimates | CI (95%) | Estimates | CI (95%) | |
| Overall activity (counts per min) | ||||||||||||
| Inter‐individual | −0.004 * | −0.01 to −0.00 | −0.004 * | −0.01 to −0.00 | −0.07 | −0.23 to 0.08 | −0.02 | −0.03 to 0.00 | 0.05 | −0.00 to 0.11 | 0.00 | −0.00 to 0.00 |
| Intra‐individual | −0.00 | −0.00 to 0.00 | −0.00 | −0.00 to 0.00 | 0.01 | −0.07 to 0.08 | −0.00 | −0.01 to 0.01 | 0.02 | −0.01 to 0.05 | −0.00 | −0.00 to 0.00 |
| Light activity (min) | ||||||||||||
| Inter‐individual | −0.00 | −0.01 to 0.00 | −0.005 ** | −0.01 to −0.00 | −0.15 | −0.33 to 0.02 | −0.02 | −0.03 to 0.00 | 0.04 | −0.02 to 0.11 | 0.00 | −0.00 to 0.00 |
| Intra‐individual | 0.002 ** | 0.00 to 0.00 | 0.00 | −0.00 to 0.00 | −0.09 | −0.19 to 0.00 | 0.00 | −0.01 to 0.01 | −0.02 | −0.05 to 0.02 | −0.00 | −0.00 to 0.00 |
All models were adjusted for age, depression scores, weekday (weekend versus weekday) and total sleep time of naps taken during the day. The bold values indicate the significant associations.
707 daily observations were clustered in 63 participants.
Abbreviations: CI (95%), 95% confidence interval; SE, sleep efficiency; SOL, sleep onset latency; TST, total sleep time; WASO, wake after sleep onset.
*
p<.05.
**
p<.01.