Differences between targeting lower back vs Glutes vs obliques. Watch this video.

I’m a physical therapist who loves training. When doing back extensions, if you excessively extend through the lumbar spine itself, a huge amount of stress gets placed on the joints of the lower back. Instead, brace your core like you would during a plank and move mainly through the hips. At that point it becomes more of a hip extension movement, but that is still more than enough to strengthen the lower back. In daily life, we rarely need pure lumbar extension strength alone. What really matters is the entire core unit working together.

What’s the name of the piece of equipment shown?