Summary: The authors studied 333 former NFL players over a 19-year period to determine factors associated with severity and trajectory of depressive symptoms. Their data revealed an association between concussion history and severity of depression, as well as showed that declining physical functioning was associated with increases in depressive symptoms longitudinally.
Brett B. L., Kerr Z. Y., Walton S. R., Chandran, A., DeFreese, J. D., Mannix, R., Echemendia, R. J., Meehan, W. P., Guskiewicz, K. M., & McCrea, M. (2021).Longitudinal trajectory of depression symptom severity and the influence of concussion history and physical function over a 19-year period among former National Football League (NFL) players: an NFL-LONG Study. Journal of Neurology, Neurosurgery & Psychiatry. doi: 10.1136/jnnp-2021-326602