
Originally Posted by
velogirl
Current studies (one study, actually) indicate that this is only true if you are participating in maximum strength and/or power phases of resistance training at the same time as you're working on aerobic endurance. If an athlete is following a periodized resistance training plan, any detriment to aerobic endurance disappears once those two phases of training have been completed.
And I don't have time to find the ref for this, but my understanding is there is only one study that even indicates this might be true. Nothing is black and white, remember?