Powerliting.different training

What types of training are best for building a successful powerlifterUnder 17-19 age? Example:is good tariìnig for 20-30 meters in Off Season in other day?How???:confused:

:confused: Is worst training above 35-45, because wow, it’s so low, now :confused: best to do 1500m in the squat, followed by ISO holds of jaw muscles in the dark with eyes closed