As we all know, core and back strength are monumentally important to health, wellness, and performance. There are really 2 separate approaches to a strong back, static back strength and dynamic back strength. Now although these may not be the correct terms for what I am talking about, I feel it is the most understandable way to explain them. I am referring to static strength as the backs ability to active and maintain proper alignment and positioning under a load. A great example of this is the dead lift, although the back is activated, it is ideally, locked into a good flat position, and is not the primary mover. However, dynamic strength, or what i am referring to it as, is when the spinal erectors are the primary movers. Keep in mind, the vast majority of the exercising we do, the back should be locked into a strong postural position with no shifting under a load, and because of that strengthening your back to hold that position is very important, however, using strengthening the erectors with exercise using them as the prime mover, can be valuable to helping the back gain strength to make postural corrections under a load as well as prepare it for life off of a barbell where we could very well end up rounding our back under a load. That being said, this is only accessory work, so keep it light, and do not neglect your static back strength as well. Here is a great video with some very creative exercise that could be valuable.