What causes lower back rounding in the Deadlift?

[Mark Rippetoe]

I only belt up with this weight and heavier.
Here's a video of me doing my last of 7 sets of 3 reps paused deadlifts 120kg.
YouTube

7 sets of 3???

[heavyiron8]

Do you know the width of your deadlift belt??? If you're using a 4 inch wide belt, that could be the culprit.

[Satch12879]

Show us a video with you demonstrating volitional control of your low back. Standing up is fine.

This is not a muscle weakness problem; it is a "I'm a male and this isn't a skill I'm naturally good at" problem.

[Fulcrum]

Show us a video with you demonstrating volitional control of your low back. Standing up is fine.

This is not a muscle weakness problem; it is a "I'm a male and this isn't a skill I'm naturally good at" problem.

Oh, please explain the bolded part. Be clear.

[Satch12879]

Oh, please explain the bolded part. Be clear.

Men aren't good at controlling their low back. Meaning flexing/extending. It's not a movement they are intuitively good at.

[heavyiron8]

Men aren't good at controlling their low back. Meaning flexing/extending. It's not a movement they are intuitively good at.

I have similar issues as the OP when the weights get heavier, however I do know how to control my lower back, following Rip's cues. How else would you prevent your lower back from rounding if weakness isn't the issue? I have no problem when squats get heavy, but it's only conventional deadlifts that's screwing me up.

[carson]

7 sets of 3???

Since this has yet to be addressed I repeat it "7 sets of 3???

[neilc1]

Since this has yet to be addressed I repeat it "7 sets of 3???

it's in the red book

[neilc1]

red = stop

[Busteddog]

Yes 7 sets of 3 but I can pull lighter weights with a neutral back but not this weight and above with a neutral back