Yes, yes, yes, yes, yes. You absoultely must replenish muscle glycogen following high intensity training(anaerobic traininig). This not only replenishies muscle glycogen, but turns on much of the anabolic machinery of the muscle cells so they are able to repair themselves. My personal opinion is that low carb diets are far more detrimental than they are productive. The right carbs at the right times makes all the difference, not cutting them out entirely. Without muscle glycogen or blood glucose you will not be able to train hard. It very well may feel as though you're training hard, but that's because the muscles are literally catabolizing themselves to meet energy needs for training. Always take in carbs before and after training.