Objective: Physical exhaustion is a frequent condition in emergency medical teams after in-house emergency runs, which might affect the quality of advanced care. Newly available light-weight scooters may reduce exertion as measured by the cardiovascular response in these circumstances and, therefore, may reduce physical exhaustion on arrival. Methods: We undertook a randomised cross-over trial in a simulated in-house emergency alarm run to examine the influence of scooting compared with conventional running on pulse rate (primary outcome), manual skilfulness and response time. Results: We tested 24 emergency department professionals in eight emergency medical teams. After scooting the pulse rate was significantly lower compared with conventional running [157 (IQR 145-169) vs. 170 (IQR 154-175) min - 1 , P=0.004]. After the simulated emergency alarm run no difference was found in manual skilfulness and response time between scooting and running. Conclusion: Using scooters for simulated in-house emergency alarm runs markedly reduces the cardiovascular response of emergency medical teams.