One-Arm Incline Push-Up — support ~45 cm

Push horizontal · reps · unilateral Mid-descent, at a very reproducible height. Anti-rotation typically limits as much as the press does. Brace fully, then push.

The movement

One hand on a stable surface around 45 cm (sturdy chair seat or standard box), body close to horizontal. Controlled press to the edge and back, on one arm. The trunk brace has to be set hard before each descent or the hips will leak rotation.

Set-up — and what each part is for

• Face a stable surface at roughly 45 cm with a free edge — anchor it against a wall if it can slide. Working hand under its shoulder.
• Feet on the balls of the feet, heels lifted, toes forward, shoulder-width.
• Distance to support (relative). Straight-line rule. Re-measure for this height and store the distance.
• Free hand parked.
• Body one straight line. Glutes squeezed, abdominals braced hard — the brace is now load-bearing in the strict sense. Pelvis square.
• Working shoulder packed down; hand screwed into the edge.
• Head neutral, clearing the edge.

The rep — rehearse it before you do it

• Down (1–2 s). Lock the trunk before initiating the descent — reactive bracing is too late at this load. Elbow ~45°, chest toward the edge. → Feel the press demand in the chest and triceps and the anti-rotation demand across the obliques and serratus arrive as co-equals.
• Bottom. Chest at the edge, brief still pause. → Feel the trunk hard first; the rep happens around it.
• Up. Press to lockout, no twist; hips and shoulders stay square.

Watch for

• Rotation of the hips at the bottom → brace fully before the descent.
• Shoulder sliding forward toward the ear → keep it packed down.
• Quietly reducing depth to keep reps → full range or end the set.
• Surface sliding → anchor it.

Breathing

Sharp exhale through the hardest part of the press. A brief brace-hold at the bottom is fine.

Within the level

• Harder: 3 s descent; pause at the bottom; narrow the feet.
• Easier: widen the feet. If balance is the limiter, rest the free-hand fingertips on the support, reducing contact over time.

Dose

Test a clean max on each side; work at half of the weaker side (rounded down), max 5 reps per set, same count both sides, weaker side first, spread through the day. Stop each set well short of failure.