Countermovement - drop jump – two-foot land and jump with a push from opponent from behind onto one leg (with arm swing) ("Drop jump" Landing two legs, jumping upward, push from behind, onto one leg, arm swing; 01)

You will need an assistant for this exercise.
Stand on a box to a height as instructed by your therapist.
When ready, hover one leg over the edge of the box.
Keeping your chest up, step forwards off the box ensuring you don’t jump.
Upon landing on both feet, jump directly upwards as high as you can, using your arms to generate momentum.
Your assistant shall push you from behind whilst in mid-air.
Land softly on one foot and regain your balance.
Hold this position.
Repeat.