I agree with Jason, strength before cardio, regardless of your form of strength training or reason for training.
I look at it like this, the energy that you need to perform strength activities is different from the energy you need to do a continuous activity, such as cardio. That being said, it doesn’t mean you won’t be tired after either activity.
However, the likelihood that you’ll be able to get through your cardio after strength training is higher than if you were to do it the other way around. That’s how I train and how I teach others to train.
Exception? If your workouts are at two separate times of the day. In that case, it doesn’t matter which you do first because you’ll have sufficient time to replenish and recover.
I agree with Karin’s answer. There is really no one answer to this question. A lot depends upon your goal(s) in training. For example, if you are working on maximum strength development, then strength training first (after conducting a proper warm-up of course) is the best way to achieve this goal. As Karin correctly identifies, if my goal is muscular endurance instead, then performing my cardio workout first should not really present a problem in my training since I am not using maximum resistance in my resistance training, and I actually want to encourage my muscles to adapt to having to work while being somewhat fatigued.
That being said, I’m a firm believer in mixing it up! So, oftentimes, despite my own or my clients training goal, I will sometimes conduct cardio first and resistance second or vice versa. I think this helps me present a different challenge to the body and in truth mimics more closely what might occur in the real world (i.e. my client doesn’t always get to choose to perform a strength movement when they’re fully rested…).
I hope this helps.
I suggest that strength training be done when strength is available. After cardiorespiratory training the muscular strength has been degraded. However, after a strength training session, you can still raise and lower your heart rate just as effectively as if you were doing it before. The pace will be a bit slower but with the same results, is that really a bad thing? However, if cardio IS your goal, then cardio should be done first. Its all about what you want to enhance the most getting the priority in your workouts.
Use your goals to dictate the order of cardio or strength training; so, if your goal is to increase muscular strength and endurance, go to the strength training first and if your goal is to increase cardiorespiratory fitness, do your cardio first (of course, you can design workouts to do these things simultaneously, but I guess we’re sticking to simple formulas here). Studies have shown advantages and disadvantages in both cases, but it still boils down to knowing your goals and proceeding with a clear plan. Bottom line: while at your freshest, do the one you most need.