Panel study data spanning 25 years show relationship between mood and movement over time

This article provides new insights into how physical activity and depression symptoms influence one another throughout adulthood. Author Soli Dubash analyzed data from the ongoing study, Americans’ Changing Lives (ACL), which he downloaded from NACDA. The ACL contains a racially diverse prospective cohort panel of US adults, and this version of the study contains the first five waves of data collected between 1986 and 2011. According to Dubash, no other study of a nationally representative sample of American adults has collected the same amount of self-reported physical activity and depressive symptom measures over as long a period as the ACL. He used a novel statistical method of analysis that accounted for stable individual differences, such as early life experiences, to reach a more accurate understanding of how depression symptoms and physical activity influence each other over time. He found that current depression symptoms can deter physical activity years later, although the reverse isn’t necessarily true—current inactivity doesn’t predict future depression symptoms. And the relationship between depression symptoms and physical activity was stable over the 25-year study period, meaning it did not change much as people got older.