
Originally Posted by
Frontrow12
18 is a bit extreme... (My background is in S&C training for sports - specifically rugby)
There is nothing wrong with your son at 12 learning the basic compound movement techniques with a broom handle, while incorporating body weight exercises, gymnastic movements and plyometric exercises in the form of take off and landing mechanics.
In a years time you can introduce him to medicine ball circuits, progressing to dumbbell circuits. As he reaches 14 he could safely progress from a broom handle to empty barbell, again emphasising technique. Plyo training can be lower impact & jumping/landing skills.
Post Peak Height Velocity (PHV) - which is around 14/15 for males - he can safely start to load the barbell. Plyos continue to be as above until 15/16 when higher impact exercises can be done.
It must be noted that as with everything, the stage of development will differ from person to person.