Background:Bout (encompassing emotional exhaustion,depersonalization and personal accomplishment) in healthcare professionals is a major issue worldwide.Emergency medicine physicians are particularly affected,potentially impacting on quality of care and attrition from the specialty.Objective:The aim of this study was to apply an attention-based training (ABT) program to reduce bout among emergency multidisciplinary team (MDT) members from a large urban hospital.Design,setting,participants and interventions:Emergency MDT members were randomized to either a notreatment control or an intervention group.Intervention group participants engaged in a four session (4 h/session) ABT program over 7 weeks with a practice target of 20 min twice-daily.Practice adherence was measured using a smart phone application together with a wearable Charge 2 device.Main outcome measures:The primary outcome was a change in bout,comprising emotional exhaustion,depersonalization and personal achievement.The secondary outcomes were changes in other psychological and biometric parameters.Results:The ABT program resulted in a significant reduction (P ＜ 0.05;T1 [one week before intervention] vs T3 [follow-up at two months after intervention]) in bout,specifically,emotional exhaustion,with an effect size (probability of superiority) of 59％.Similar reductions were observed for stress (P ＜ 0.05) and anxiety (P ＜ 0.05).Furthermore,ABT group participants demonstrated significant improvements in heart rate variability,resting heart rate,sleep as well as an increase in pro-inflammatory cytokine expression.Conclusion:This study describes a positive impact of ABT on emergency department staff bout compared to a no-treatment control group.