you are ALWAYS suppose to do your weight training prior to cardio (besides a light warm up) since you must first deplete your glycogen stores before you can start burning fat. So if you do abs prior to cardio, you will deplete your gylcogen and then once you do your cardio, you will already be in fat burning mode.
These three ab workouts will develop stability and increase power.. During running, the core muscles maintain the position of your pelvis. Your pelvis can rock .
Strength and core exercises will actually help your running and prevent injuries. Many runners. Understand that your "core" isn't just your abs. It also includes .