How do I train to develop Explosive Power?
My exercise history: I used to mainly do endurance sports - long distance running, bicycling, canoeing, cross-country skiing.
My recent weight training: I've been lifting weights steady for 18 months, doing a split mass routine, doing 3 sets per exercise with reps of 12-10-8.
My current goal: I recently started studying HEMA = Historical European Martial Arts: mainly the European long sword. For sword sparring one needs explosive power. A HEMA website recommended a basic 5 x 5 program to develop this explosiveness. So I'v begun experimenting with this program, and have added additional exercises to it, like curls, lat pull downs, etc. Essentially trying to reprogram my body for this sport.
My stats: I'm a 58 year old man, 5'6", 160 lbs, approximate BMI is 18% .
My question is: is a 5 x 5 program really the best approach to develop the explosive power that I'm looking for? Or are there better approaches?
Thanks in advance for your insight and advice!