RT Journal Article SR Electronic T1 Boosting positive mood in medical and emergency personnel during the COVID-19 pandemic: preliminary evidence of efficacy, feasibility and acceptability of a novel online ambulatory intervention JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 555 OP 557 DO 10.1136/oemed-2021-107427 VO 78 IS 8 A1 Karin G. Coifman A1 David D Disabato A1 T H Stanley Seah A1 Sarah Ostrowski-Delahanty A1 Patrick A Palmieri A1 Douglas L. Delahanty A1 John Gunstad YR 2021 UL http://oem.bmj.com/content/78/8/555.abstract AB Objectives The aim of this project was to test the efficacy of a brief and novel online ambulatory intervention aimed at supporting psychological health and well-being for medical personnel and first responders during the COVID-19 pandemic.Methods Interested participants, n=28, actively employed as medical personnel, support staff and emergency responders, in the Midwestern USA in May–June of 2020, provided informed consent and were randomised to complete either low-dose or high-dose intervention, one time daily for 1 week via smartphone application. Each daily intervention included expressive writing, adaptive emotion regulation activity and (one vs two) positive emotion-generation activities, lasting 3–6 min a day. Ratings of negative and positive emotion were provided before and after each activity daily. Analyses tested compliance, acceptability, as well as efficacy at increasing positive emotion and decreasing negative emotion with each use and across time.Results The results indicated a 13% increase in positive emotion, t(25)=2.01, p=0.056; and decrease in negative emotion by 44%, t(25)=−4.00, p=0.001 across both doses. However, there was a clear advantage for individuals in the high-dose condition as daily boosts in positive emotion were significantly greater (an additional 9.4%) B=0.47, p=0.018. Overall, compliance was good. Acceptability ratings were good for those who completed the follow-up assessment.Conclusion Front-line personnel, including medical staff and emergency responders, are experiencing unprecedented psychological stress during the COVID-19 pandemic. This investigation suggests both feasibility and efficacy for a brief, daily, ambulatory intervention which could provide essential psychological support to individuals at risk in the workplace.Data are available upon reasonable request. This research consists of preliminary feasibility data for NCT0439827. All data and materials are available upon request to the lead author, KGC, at kcoifman@kent.edu.