Exerciser: Push-up position, place hands on (one small hand) on the top of the vaulting box, bend and stretch the arms (lower and raise the upper body).
Partner: Holds the feet of the active participant in a standing position at hip height.
Attention:
Actively tense the torso (do not let the hips sag), elbows are not at shoulder height but slightly closer to the upper body ("A" shape with the arms). Shoulders are fixed and pressed down towards the hips.
Lighten:
Place feet or knees on the floor (without partner); lower upper body less (arms barely bent).
Harden:
Additional weight (on the back); helper raises legs higher than hip height; lower upper body lower (below hand position - 2 swing box tops required).
Variant:
The helper also becomes the exerciser by performing a squat while the partner performs the push-ups (lower body: thigh/gluteal muscles).