Thoracic Flexion on Deadlifts

Hey Barbell Medicine crew,

I was doing my working sets of deadlifts the other day when one of the trainers commented that I was showing, his words, excessive thoracic flexion both on the eccentric and the concentric. He offered to record my next set and, sure enough, I do seem to display some thoracic flexion when the loads approach >80%.

Is this something I should be concerned about? I’m usually focused on keeping lumbar extension when pulling so I’ve never put too much thought on whether I’m in thoracic extension as well. I guess after so many years it’s a habit I’ve developed.

I can post a video if necessary.

Thanks in advance, guys.

You can post a video to the BBM FB group if you’d like some eyes on it.