Box squats get some bad press from ignorant trainers who are weak and don’t know how to do them properly. I can squat on a box below parallel with 400 kgs on my back. Now that doesn’t mean they are safe. But I think they have helped me build a pretty strong back.
Here is what Jim Wendler has to say about box squats being bad for the back.
“Box squats are bad for the back: I hear this all of the time but am reminded of a famous quote by Meg Ritchie, former strength and conditioning coach at the University of Arizona. “There are no dangerous lifts, just dangerous coaches.” I’ve seen very bad box squats and I’ve seen very good box squats. I’ve also seen really awful bench pressing but no one is battling that exercise. When people tell you that box squats are bad for the back ask them to show you the evidence. Since THEY attacked box squats, THEY should provide you with the information. Not the other way around. Also, if you are a coach and are using the box squat, please do us all a favor and learn how to do it and learn how to COACH it. You’d be saving everyone a lot of headaches and time if this were followed.”- Jim Wendler