Table 5.
Results from a mixed-effects model assessing interactions between sex, grade, desk assignment, time, and in-school activity on after-school SB, LPA, and MVPA.
| Sedentary Behavior (SB) | Light PA (LPA) | Moderate–Vigorous PA (MVPA) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Effects | EST | SE | p | EST | SE | p | EST | SE | p |
| Intercept | 48.87 | 4.49 | <0.0001 | 25.47 | 3.16 | <0.0001 | 1.33 | 0.19 | <0.0001 |
| Male | −3.43 | 1.53 | 0.0263 | 0.87 | 1.15 | 0.4474 | 0.31 | 0.09 | 0.0005 |
| Grade (REF: 3rd Grade) | 0.0264 | 0.0257 | 0.3472 | ||||||
| 4th Grade | 2.96 | 1.98 | 0.1379 | −2.56 | 1.50 | 0.0891 | −0.02 | 0.11 | 0.8565 |
| 6th Grade | 5.49 | 2.02 | 0.0074 | −4.13 | 1.51 | 0.0069 | −0.14 | 0.11 | 0.2192 |
| Group (REF: Group 1) | 0.89 | 1.44 | 0.5373 | −0.84 | 1.09 | 0.4424 | 0.00 | 0.08 | 0.9545 |
| Time (REF: Baseline) | 0.0020 | 0.0067 | 0.0163 | ||||||
| Post I | 3.61 | 1.13 | 0.0016 | −2.13 | 0.86 | 0.0144 | −0.19 | 0.06 | 0.0042 |
| Post II | 3.34 | 1.11 | 0.0029 | −2.55 | 0.85 | 0.0031 | −0.09 | 0.06 | 0.1437 |
| School Time Activity (SB, LPA, MVPA) | 0.19 | 0.07 | 0.0133 | 0.21 | 0.08 | 0.0069 | 0.29 | 0.07 | 0.0001 |
Note: No significant interaction (both 2-way and 3-way) were found between desk type and physical activity or sedentary behaviors. REF, reference group used for model comparisons. School time activity is a reference of the in-school levels of the same behavior being compared (i.e., in-school SB to afterschool SB; in-school LPA to afterschool LPA; in-school MVPA to afterschool MVPA).