Lower Back Stretch
Being limber is an important goal in staying fit. Stretching muscles is one tool that not only maintains your flexibility, but helps prevent injury during exercise. I always do back stretches after each of my heaving lifting sets, to help prevent recurrence of back problems I have experienced in the past.
Platinum Fitness has a Precor 240i StretchTrainer, which is specially designed to allow you to stetch your muscles while seated. It is provides good back support, while you use your own weight to stretch one of 8 major muscle groups: 1) Lower back, 2) Hamstrings, 3) Glutes/hips, 4) Hips/legs/back, 5) Inner thighs/groin, 6) Upper back, 7) Shoulders, and 8) Quads.
Read the instructions on the machine first, and watch the video below for a demonstration of two of the exercises. ~ The Professor
Instructions for Lower Back Stretch
Watch a video produced by 24 Hour Fitness Centers that demonstrates how to use the Precor StretchTrainer