Tempo twice a day

[RB34]

@rocket_1014

My understanding is tempo runs are used for improving aerobic capacity, general conditioning and recovery. You want the athletes to maintain a certain speed (e.g. 60%) and generally not encourage them to go faster that that. By splitting the session, the athletes might be keen to run faster pace and also the additional impact of getting warmed up twice, defeats the purpose of it being a recovery session. In case you are keen on two sessions / day an option might be to have the first session as the running one and the second one being the Medicine Ball core strength one.

I agree with most of your statement above, I think for a pure short sprinter tempo volume in 900-1000 meter range can develop aerobic power esp if you are using long reps for example 3-4x300 with 3min rest at 75%.