1. Start by standing so that a box is to your side.
2. Take a side step to come up onto the box with one leg before following with the other, bend it in front of you so that it makes a 90 degree angle at the knee.
3. Return the leg that is in the air to the box, and then step off with both feet.
4. Repeat the process except that you will be initially stepping on the box with the opposite foot in the beginning, allowing yourself to kick forward with the opposite leg.
Under muscle goup the option "Abductors" is missing.
exercises for balance, frontal plane exercises, step up to balance exercise