fast twitch muscle preservation

[rlholtz]

I understand that fast twitch muscle fibers tend to diminish faster than slow twitch fiber as we age. I'm going on 55 and am interested in preserving the fast twitch fibers I have. I imagine short sprint rowing intervals with lots of rest in between might be a good way to achieve this. Anyone have any ideas on how to do this without messing up your back?

[Tinus]

You basically want to put your body into an anabolic state so be moderate and also think about the balance with diet and rest which can be just as helpful as the exercise. Training with weights or some alternative low impact weight training is also very good for the body which is getting old.