I've been experimenting with a kind of different exercise from anything I've done before. It's a strength/stretching exercise for hip flexors, which are notoriously difficult to target directly. I've had very good results with Thomas Kurz's dynamic stretching approach, but he talks pretty much entirely about stretching with full kick-like extensions. What I've been trying is more like this:
You start facing N., say, bring the kicking leg up straight in front of you, and pivot on the standing leg somewhere between 90º and 110º—let's say counterclockwise. You terminate the pivot with your kicking leg still in the raised position, kneecap facing the ceiling, and the toes of your standing leg foot point just a little below W. Now you rotate your raised kicking leg 90º toward the floor, maintaining the completely bent configuration, so that your kneecap is now facing W. as well. You hold this position—call it position 1—for five seconds, then rotate your bent knee in towards your standing leg until they meet (all the time, of course, your kneecap continues to face W.) This is position 2. You then drive your bent knee back up to position 1, then back down to position 2, and so on, for 20 reps, trying to extend the height of the bent leg each time. Then do the same thing on the the other side, so the kicking leg becomes the standing leg and vice versa.
The idea is that this is a dynamic stretch, like a front stretch kick, but because you've got your leg completely bent in the pre-thrust chambering position, you can't use your quads, or any other leg muscle, to assist with the lifting; the only muscles involved are the hip flexors themselves. I'm a fan of the big compound exercises, but the hip flexors are a different story—I don't think compound exercises work them at all, and with something like a front or side stretch kick, it feels altogether too easy to let the work be taken over by the big leg muscles and use momentum to drive the kick up, no matter how much control you try to exert over the movement. This exercise, by contrast, seems to put the burden 100% on the flexors themselves.
Has anyone else experimented with this kind of stretch before?
You start facing N., say, bring the kicking leg up straight in front of you, and pivot on the standing leg somewhere between 90º and 110º—let's say counterclockwise. You terminate the pivot with your kicking leg still in the raised position, kneecap facing the ceiling, and the toes of your standing leg foot point just a little below W. Now you rotate your raised kicking leg 90º toward the floor, maintaining the completely bent configuration, so that your kneecap is now facing W. as well. You hold this position—call it position 1—for five seconds, then rotate your bent knee in towards your standing leg until they meet (all the time, of course, your kneecap continues to face W.) This is position 2. You then drive your bent knee back up to position 1, then back down to position 2, and so on, for 20 reps, trying to extend the height of the bent leg each time. Then do the same thing on the the other side, so the kicking leg becomes the standing leg and vice versa.
The idea is that this is a dynamic stretch, like a front stretch kick, but because you've got your leg completely bent in the pre-thrust chambering position, you can't use your quads, or any other leg muscle, to assist with the lifting; the only muscles involved are the hip flexors themselves. I'm a fan of the big compound exercises, but the hip flexors are a different story—I don't think compound exercises work them at all, and with something like a front or side stretch kick, it feels altogether too easy to let the work be taken over by the big leg muscles and use momentum to drive the kick up, no matter how much control you try to exert over the movement. This exercise, by contrast, seems to put the burden 100% on the flexors themselves.
Has anyone else experimented with this kind of stretch before?