Table III.
Negative Affect and Interactions With z-BMI Predicting Activity Counts and MVPA Minutes 60 Min After EMA Recordings
| Total activity counts |
MVPA minutes |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 95% CI |
95% CI |
|||||||||||
| B | SE | t | p | Lower | Upper | B | SE | t | p | Lower | Upper | |
| Intercept | 2.98 | 0.05 | 64.60 | <.001 | 2.89 | 3.07 | 0.77 | 0.08 | 9.41 | <.001 | 0.61 | 0.93 |
| Gender | 0.14 | 0.07 | 1.96 | .050 | 0.00 | 0.29 | −0.30 | 0.13 | −2.30 | .021 | −0.55 | −0.04 |
| Age | −0.06 | 0.02 | −2.93 | .003 | −0.11 | −0.02 | −0.13 | 0.03 | −3.81 | <.001 | −0.20 | −0.06 |
| z-BMI | 0.02 | 0.03 | 0.45 | .653 | −0.05 | 0.08 | −0.03 | 0.05 | −0.52 | .604 | −0.13 | 0.08 |
| Negative affect (between) | 0.20 | 0.37 | 0.54 | .590 | −0.52 | 0.92 | 1.06 | 0.60 | 1.76 | .079 | −0.12 | 2.23 |
| Negative affect (within) | −0.03 | 0.08 | −0.36 | .722 | −0.19 | 0.13 | −0.31 | 0.20 | −1.59 | .113 | −0.69 | 0.07 |
| Negative affect (between) × z-BMI | −0.36 | 0.49 | −0.72 | .471 | −1.33 | 0.61 | −0.91 | 0.78 | −1.17 | .243 | −2.44 | 0.62 |
| Negative affect (within) × z-BMI | −0.07 | 0.10 | −0.73 | .466 | −0.27 | 0.12 | −0.66 | 0.25 | −2.69 | .007 | −1.14 | −0.18 |
| B | SE | Z | p | Lower | Upper | B | SE | Z | p | Lower | Upper | |
| Random intercept (family) | 0.02 | 0.01 | 1.23 | .220 | 0.00 | 0.08 | 0.08 | 0.04 | 1.92 | .054 | 0.03 | 0.21 |
| Random intercept (participant) | 0.04 | 0.01 | 2.57 | .010 | 0.02 | 0.08 | 0.05 | 0.04 | 1.35 | .178 | 0.01 | 0.21 |
| Conditional R2 | 0.1326 | 0.1136 | ||||||||||
Note. MVPA = moderate-to-vigorous physical activity (minutes); EMA = ecological momentary assessment; z-BMI = body mass index z-score; between = grand-mean centered variable; within = person-mean centered variable. Gender was coded such that boys were the reference category. Bolded values indicate significant effects at p < .05.