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Michael Drew
06-16-2008, 05:46 AM
I have this weakness/ problem when I get to the bottom of my squat my butt tucks underneath me nullifying the arch in my lower back. Is this a weakness of something?
Timothy Holmes
06-16-2008, 06:05 AM
I have exactly the same problem. The cause is tight hamstrings. Stretch!

A good one is to grab a plate (25# or whatever) and hold the bottom position of a stiff-legged deadlift for 30 seconds. Repeat.
Michael Drew
06-16-2008, 06:06 AM
Ok that sounds right, I have very tight hamstrings.
Steven Low
06-16-2008, 08:54 AM
Stretch out that position by getting in a deep squat. Can be both ankles and hammies. Also, wanna get the lower back stronger as well.

Pretty much what Tim said.
Michael Drew
06-16-2008, 12:24 PM
Stretch out that position by getting in a deep squat. Can be both ankles and hammies. Also, wanna get the lower back stronger as well.

Pretty much what Tim said.Thanks for the replies, so I shouldn't be progressing further with increased weight until this is fixed. It happens with 40 kg the same as it happens with 90 kg.
John Alston
06-16-2008, 12:44 PM
http://strengthmill.net/forum/showthread.php?t=1334
Leo Soubbotine
06-20-2008, 07:10 AM
Good post John.
Tons of knowledge there.

My video is dissected amongst others too :D
Ben Moskowitz
07-01-2008, 11:43 AM
exrx.net associates hips posteriorly rotating in the bottom of the squat (butt wink) with glute and adductor inflexibility, not hamstrings.
http://exrx.net/Kinesiology/Inflexibilities.html#anchor13258452
or
http://exrx.net/Questions/FullSquatHipFlex.html (WFS)
the deep squat test shows the same.

Bent knees means not the hamstrings.

Thoughts?
Timothy Holmes
07-01-2008, 03:06 PM
Do the stretch I suggested earlier, then do an air squat. If hamstring tightness is the problem or even a contributor, you should be able to tell the difference. Same with the ankles, and possibly the glutes and adductors...

It's a bit odd that they don't mention hamstring tightness. It is definitely a factor though. Remember that the hamstring is a player in two joints, not just the knees.
Allen Yeh
07-02-2008, 08:18 AM
Tiight/shortened hip flexors will contribute to hamstring "tightness."