Impact of Pre-lockdown Hyper-energy on Mood and Rhythm Dysregulation in Older Adults During the COVID-19 Pandemic

Objective: The aim of this work is to verify whether a cohort of elderly people with hyper-energy tended to increase depressive symptoms and misaligned social and personal rhythms during the lockdown compared to a cohort of older adults without hyper-energy one year before the lockdown. Methods: The two cohorts were evaluated in April 2019 (T0) and in April 2020 (T1). Hyper-energy, cognitive performance, depressive symptoms, and social and personal rhythms were evaluated at T0 and T1. Results: In the measure of the Brief Social Rhythm Scale (BSRS) score, the differences between groups in the two observation times reach statistical significance. The sub-group with previous hyper-energy at T0 but no longer having hyper-energy at T1 increases the score by more than 5 points (a higher score indicates greater rhythm dysregulation, thus having a worse regulation of rhythms at T1), while in those individuals who didn’t have hyper-energy, the score remains substantially unchanged (+0.06). However, if the increase in the score from T0 and T1 is measured, both groups with hyper-energy at T0 presented a greater mean increase compared to people who did not have hyper-energy at T1. In the total of the eleven elderly people with hyper-energy at T0, the mean increase in BSRS score was 1.05±1.19 versus 0.06±0.98 (F=9.407, P=0.003), and in people who no longer had hyper-energy at T1, it was 1.05±1.19 versus 5.50±3.83 (F=105.0, P<0.0001). In people with hyper-energy at T0, the mean increase in the Patient Health Questionnaire-9 (PHQ-9) score was 0.72±0.75 versus 0.01±0.28 (F=37.153, P<0.0001). The gain was even higher in people who no longer had hyper-energy at T1, 1.38±1.03 vs. 0.01±0.28 (F=87.386, P<0.0001). An inverse linear correlation was found between energy perception (measured as the score of Item 10 of SF-12) and the score of PHQ-9 measuring depressive symptoms both at T0 and, more strongly, at T1, as well as with the BSRS scores, but only at T1. Conclusion: The study, despite the limitations of a small sample, seems to confirm a greater vulnerability to the lockdown situation in people with hyperactivity, even in the absence of psychopathology (i.e., part of the bipolar spectrum).