^^^Exactly.

On the specific question of cardio vs. strength gains there is not a whole lot of scientific data on the subject. What little I have seen suggests that strenght gains are adversely affected without at least a period of 24 hours recovery between the two. This is nothing definitive and may or may not be practical for everyone. There is not cut and dry answer but I would suggest that you separate them as much as humanly possible. If I were doing them on the same day (which I wouldn't) I agree with Verb that I would want something like 6 hours between if not more.

The other question is if the type of cardio affects strength gains. I.E. what is better for strengh, high intensity glycolitic type training or traditional long duration steady state. The concrete data I have seen suggests that the type makes no difference but I doubt enough research has been done to adequately answer any of these questions except to say it is optimal to have a good long gap between you cardio and weights IF you want to prioritize strength and mass gains.

One other thing...sprinting has nothing to do with endurance training. Sprint interval training I would actually consider a more solid strategy than steady state.

Specifics on the few studies I have seen:

There was a study that found that guys who exercised on bike for half and hour were weaker for up to six hours after that. So cardio before lifing wouldn't be good. Always lift first and as I said seperate them as much as possible preferably on another day. Also going heavy with low volume seems to work better and you don't lose strength with cardio, whereas mixing cardio with high repitition high volume stuff seems to result in more stregth loss in addition to the fact that is the worst way to get stronger. So in other words not only will you not get as strong that way but cardio will tend to reduce your strength levels even further.

I would also point out that the interference phenomemom seemed to coincide more to really high and unrealistic work levels in general. I.E. really high volume on every muscle group and cardio six days a week. Which means your asking you body to adapt to two different things at once and plus you not giving it much recovery time for either one.

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If you act sanctimonious I will just list out your logical fallacies until you get pissed off and spew blasphemous remarks.