Low or high stress training will do it. The object of your game will be multiple plant tops — the more, the less vertical growth.
With high stress, you are actually damaging the stems by squashing them (the plants will take it in stride and reward you). You can then bend the stem over and hold it there with a twist tie or piece of wire. If you don't hold them in place, they will often straighten back up again. All the growing points along that branch that you bent over will then be stimulated by the direct exposure to light, and they'll all become growing tops/buds.
BTW, if you don't hold the branch at about a 90 degree angle and it straightens up, height of the plant will still be reduced. Squashing a main stem (super-cropping) slows the growth of the main stem, and stimulates the growing points below the stem damage to branch out and grow upward. Again, this will give you multiple plant tops, but not quite as many as bending the branch over and wiring it there.
The only sacrifice, if it can be called that, is you won't have a single, giant cola. I don't like single, giant colas, so it's wouldn't be a sacrifice for me.