Just read this:
What do you guys think? Any rebuttal? Specifically curious if his point about sitting making the hip flexors loose rather than tight could be valid. I’m not sure his diagrams prove anything. Looking for an intellectual discussion.
The author sure has a bone to pick with this site.
Telling people they shouldn’t stretch their hip flexors if they’re in pain is just as bad as telling people they should if they’re in pain. Speaking in absolutes is always wrong (see what I did there?).
I don’t think the diagram was showing “loosening” of the hip flexors, but rather how the PA forces (from the chair) on the proximal femur and the AP forces (from gravity) on the distal femur create anterior translation of the humeral head. This is accompanied by the fact that when sitting hip stabilizers are inhibited and don’t centrate the humeral head in the acetabulum. The hip flexors, however, are still in a shortened position while sitting as compared to standing.