Weighted Run Question

Does anyone know if there is any way of configuring the 5X so it knows a run is weighted? I'm thinking if I record a run with a 10kg weighted vest using the normal run app, my performance will obviously be slower than it would be without the vest, and the watches performance stats like VO2 Max, race predictor etc. will all be adjusted incorrectly. Does anyone else run with a vest? If so, how do you record it?