Many bodybuilders and sites will recommed fast-digesting carbs within 30 minutes after a workout to replenish depleted glycogen stores in muscles. Dextrose (glucose) is recommended over other type sugars because it can be used right away vice having to be transported to the liver to be broken down and then used. An example would be sucrose, which is one glucose molecule and one fructose molecule. It would have to go to the liver because fructose can't be used by the body without being processed in the liver.
The dextrose is also supposed to spike insulin levels to increse muscle. Spiked insulin makes your body hold on to fat and muscle, right?
So, in a 60-90 minutes standard resistance training session, are glycogen stores completly depleted? And if they are, how long would it take to replenish them with a well balanced diet? If it is within 24-48 hours, then I'm guessing I wouldn't need to add dextrose because by the time I went to train that muscle group again, my glycogen would be restored?
I have been taking post-workout carbs (30 grams of dextrose) along with my post-workout shake for the past couple of years. Dextrose is cheap, but am I wasting my money? I could replace those simple carbs with some complex carbs that have more nutrients...