Table 3:
Next-day associations between physical activity and alcohol cravings and affect
| Alcohol Cravings | Positive Affect | Negative Affect | |||||||
|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||
| Variable | Est. | SE | p | Est. | SE | p | Est. | SE | p |
|
| |||||||||
| Intercept | 2.042 | .461 | <.001 | 3.246 | .293 | <.001 | 2.857 | .311 | <.001 |
| (WS) Steps taken yesterday | −0.021 | .012 | .074 | 0.005 | .008 | .523 | −0.005 | .009 | .553 |
| (BS) Steps taken per day | −0.040 | .058 | .492 | 0.010 | .035 | .778 | −0.035 | .037 | .344 |
| (WS) Bout of PA yesterday | 0.326 | .300 | .276 | 0.473 | .245 | .050 | −0.069 | .232 | .766 |
| (BS) Bouts of PA per day | 3.431 | 2.991 | .251 | 1.806 | 1.780 | .310 | 2.209 | 1.875 | .239 |
| Time wearing Fitbit yesterday | 0.772 | .506 | .127 | −0.501 | .361 | .165 | 0.491 | .388 | .206 |
| Days in Study | 0.006 | .013 | .622 | −0.020 | .009 | .029 | .011 | .010 | .274 |
| Random Effects | Est. | 95% CI | Est. | 95% CI | Est. | 95% CI | |||
| (WS) Bout of PA yesterday | .0345 | 0.045 | 2.632 | ||||||
Note. Est. = estimate. SE = Standard error. PA = physical activity. WS = Within subjects, or level 1. BS = Between subjects, or level 2.
All effects are fixed unless noted otherwise. Predictor variables were lagged behind outcomes by one day. All variables were averaged across each day and nested within person. The bout of physical activity variable is coded 0 = no bouts, 1 = at least 1 bout of physical activity. Day of week (6 dummy coded variables) was added as a covariate but is not listed in tables.