I read a Frederic Delavier’s book « Strength Training Anatomy » and I learned good stuff.
Stand on one leg :
Take your ankle or your foot of your opposite leg.
Try to bring your heel closer to your buttocks by pulling upwards
This exercise works deep the iliopsoas and work a little bit the tensor fasciae latae.
To better feel the rectus femoris muscle (biarticular portion quadriceps), the thigh must be pulled as far back as possible. The quadriceps extension is naturally limited by the iliofemoral ligament’s tension.
To have a better balance, it’s possible to put your other arm on a stable object or a wall.
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