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Not that I'm suggesting that lumbar flexion is a good thing*, but it's really end-range lumbar flexion that's necessarily problematic and injurious. Stuart McGill talks about this in some detail when he was studying the spines of powerlifters, most of whom ultimately lift with some degree of flexion in their spines. Injury occurs when the spine is flexed fully, partial flexion, skillfully employed, avoids injury. End range flexion with just the weight of your torso and insufficient muscle support will injure you far more assuredly than partial flexion supported skillfully by powerful trunk musculature, which is why people will throw out their backs picking up a pencil.Khronos8 wrote:@jlmoss: what Hoose said, stay upright as you go down. Significant butt-wink at the bottom too. (where you tuck your pelvis underneath you). Lumbar flexion under load... been discussed ad-nauseum on this board.
Disclaimer: I have the exact same problem! So... if you figure out how to fix it, let me know.