Self-weighing Practices and Associated Health Behaviors during COVID-19.

Objective: In this study, we investigated self-weighing frequency (SWF) among adults during the COVID-19 pandemic and retrospectively (6 months) before the pandemic, and whether SWF was associated with changes in health-related behaviors. Methods: United States adults (N = 1607) completed a health-related questionnaire during COVID-19 and associated shelter-in-place. We categorized respondents into 4 groups of SWF at the time of the pandemic: "Never," " 1x a week." Results: The proportion of adults never weighing increased during the pandemic (15% to 25%), whereas the proportion of those weighing < 1x week went down (41% to 29%). Higher SWF was significantly associated with changes in energy expenditure including increased total physical activity (PA), lower likelihood of decreases in vigorous, moderate, and walking PA, and a lower likelihood of sitting more. More frequent self-weighing also was associated statistically with lower likelihood of keeping unhealthy eating behaviors the same. Conversely, there was no significant difference in changes in alcohol, caffeine, takeout, fruit or vegetable consumption, and television viewing among SWF groups. Conclusion: SWF decreased during the pandemic in the lower 2 SWF categories. Higher SWF was associated with fewer negative changes in health behaviors, especially related to PA.