Table 2.
Cross-lagged autoregressive models between sleep duration and PA
| Regression slopes for Model 1 (Actual Sleep Time and MVPA) |
Regression slopes for Model 2 (Actual Sleep Time and VPA) |
|||||||
|---|---|---|---|---|---|---|---|---|
| Estimate | Standard error | z | p | Estimate | Standard error | z | p | |
| Within-subject dependent variable: Actual Sleep Time | ||||||||
| Autoregressive association: from sleep to sleep | 0.01 | 0.00 | 3.89 | < .0001 | 0.01 | 0.00 | 3.87 | < .0001 |
| Cross-lagged association: From PA to subsequent sleep | 0.00 | 0.00 | 0.01 | .990 | -0.00 | 0.00 | -3.65 | < .0001 |
| Within-subject dependent variable: PA | ||||||||
| Auto-regressive association: from PA to PA | 0.06 | 0.00 | 14.34 | < .0001 | -0.06 | 0.00 | -11.73 | < .0001 |
| Cross-lagged association: from sleep to subsequent PA | -1.92 | 0.17 | -10.99 | < .0001 | 0.23 | 0.07 | 3.14 | .002 |
| Fit Indices | ||||||||
| χ2 | 16,393.84 | 16,000.88 | ||||||
| CFI | 0.87 | 0.81 | ||||||
| TLI | 0.88 | 0.81 | ||||||
| RMSEA | 0.05 | 0.05 | ||||||
| Scaled χ2 (df) | 12,912.84 (418) | .000 | 10,656.40 (418) | .000 | ||||
PA Physical Activity
MVPA Moderate to Vigorous Physical Activity
VPA Vigorous Physical Activity
CFI Comparative Fit Index
TLI Tucker-Lewin Index
RMSEA Root Mean Square Error of Approximation