MYTH
Having trouble getting leg waves for choreography or even getting your hips to rotate around enough for certain tricks? Or maybe you just "feel tight".
A lot of times people think this is due to a mobility restriction and will waste time stretching areas that are not as involved (i.e. the hip flexors vs. gluteals, etc. for rotational movements).
Quick Seated Measurement of Hip Mobility:
While in sitting (and without lifting your leg up or marching - i.e. no using those hip flexors to cheat!), keep your knee bent, and twist your leg in as much as you can without marching or rolling your butt cheeks off of the table (for internal rotation). You are looking for 40-45 degrees of rotation.
For External Rotation, you should be able to slide your heel up to your mid-shin without the same compensations (no hip marching or twisting buttocks off of the table). You are also looking for 40-45 degrees of rotation here.
Here is the catch. If you cannot get full range of motion in either direction, to make sure it is truly a mobility issue, have another person, (preferably your amazing Physical Therapist) passively move your leg through the same movements.
If your therapist can move your leg through the full ROM without a compensation, it is NOT a mobility issue, but something called a motor control issue. This means you have the range of motion to perform an activity, but have lost the pattern for what to do (whether through injury, a compensation for something else, etc.; basically your hips needs to be reeducated for how to control the range of motion they have).
The best analogy for this idea is that if you cannot open a door, is it because the hinges needs to be given WD40 (loosened up or mobility work), or is it because you forgot how to use the handle (motor control).
If your therapist cannot move your leg through the full amount of rotation, then there is a hip mobility restriction and now it is time to address this, usually by stretching and performing release to the gluteal area, not the hip flexors (sometimes joint mobilization and even manual therapy by your therapist is needed).
The hip flexors are involved in the fact that they like to help and take over a lot, especially when the glutes are both tight and weak.
Which is why those Sunday BumDay things are SO important to keep your glutes strong, but mobile.
Look for more Hip Mobility antics this week! And message today if you would like an assessment of your Hip Mobility.