If you’ve seen me in the clinic, you know one of my favorite back strengthening exercises is the quadruped, alternating arm and leg lifts with a 3-5 second hold.  Make sure you are stable before you began your 3-5 second hold.  Much research has been done on the multifidus musculature and for many of those with lower back pain, that muscle is almost non-existent.  Therefore, strengthening this area is a big step in the right direction to help manage lower back pain.  Check out the video below.