depends on the surface friction and the amount of power used.
If the engines are cold and we are going into icing conditions we need the oil temperature above a set value to have the ice protection working properly.
In general the power used is nowhere near 50% never mind 100% and both pilots are watching and any hint of movement and the power will be reduced. We would wouldn't call it high power settings it won't be more than the power used on approach to landing.
Each aircraft type is different though with what it uses. And there is a difference between the procedures for turboprops and jets.
There are also tables in the performance manual giving max power for warm up and braking action. So at say a good braking action of 0.40 you can use 30% and for a poor braking action of 0.15 (which is slip when you try and walk on it) then it will say only use ground idle and you just have to wait.