you WILL get conflicting advice in this area simply because people are different, they react to external stimuli differently, etc. but if we look at what happens when one takes
aas perhaps we can make a better educated guess as to what volume is ideal 'on' vs. 'off'.
what do
aas do? they increase protein synthesis and decrease catabolism. in addition, they block cortisol (this is another anti-catabolic action) by competing with it for the same receptors. given that your muscle will grow faster and your cortisol will be controlled it makes sense that your body will be able to handle a 'bit' more training and/or intensity in your workouts. what this 'bit' represents is up to the individual. for some it may mean a 5% increase, for others a 20% increase, etc. you need to find out what volume gives you the best results. this is where trial and error comes into play. hope this helps.