what is considered fasted? if you train in the evening how long after a meal would you consider yourself in a "fasted state"
fasted weight training is better when you are doing circuit rather than powerlifting or lifting heavy, depending on your goals. if im looking to pack on some mass, ill eat protein before my first workout. if i want to cut down a lil here and there, ill go for a fasted workout and then grub out after to replenish.
i also think if you are pre diabetic in your family, you will see better results from a fasted state. if you are a ectomorph, i would not recommend this strategy.