Assisted Standing Chin-Up
- Target muscle
- Latissimus Dorsi
- Synergist muscles
- Brachialis, Brachioradialis, Deltoid Posterior, Infraspinatus, Trapezius Lower Fibers, Trapezius Middle Fibers
- Equipment
- Leverage machine
- Body part
- Back
- Type
- Strength
The assisted standing chin-up is a strength exercise that primarily targets the latissimus dorsi, with help from the biceps and forearms (via the brachialis and brachioradialis), the rear deltoids, infraspinatus, and the lower and middle trapezius. Performed on a leverage machine that supports part of your bodyweight, it uses an underhand (supinated) grip and is ideal for building the strength and control needed for full bodyweight chin-ups.
How to do the Assisted Standing Chin-Up
- 1Set the machine's assistance weight — a heavier setting removes more of your bodyweight and makes the rep easier, so start light on assistance only once you can complete clean reps.
- 2Grip the handles with a supinated (palms-facing-you) grip at roughly shoulder-width and kneel or stand on the assist platform.
- 3Let the platform lower so your arms are fully extended and your lats are stretched, keeping your shoulders pulled down away from your ears.
- 4Brace your core and pull your elbows down and back, leading with your chest as you rise toward the handles.
- 5Continue until your chin clears the handles and your upper chest is close to them, squeezing your back at the top.
- 6Lower yourself under control to a full hang, resisting the assistance rather than letting it drop you.
- 7Complete your reps, then step off the platform safely and re-rack the assistance pin.
Form tips
- Initiate each rep by depressing your shoulder blades before bending your arms, so the lats drive the pull instead of the biceps alone.
- Keep your chest up and your torso close to vertical to bias the latissimus dorsi over the arms.
- Reduce the assistance weight in small steps as you get stronger to keep progressing toward an unassisted chin-up.
- Control the lowering phase for the full range — the eccentric builds as much strength as the pull up.
Common mistakes
- Using too much assistance weight, which lets momentum do the work and limits the strength carryover to real chin-ups.
- Stopping short of a full hang at the bottom, which cuts the lat stretch and shortens the working range.
- Shrugging the shoulders up toward the ears, which shifts load off the lats and stresses the neck and traps.
- Yanking with the biceps and swinging the body instead of pulling smoothly with the back.
Frequently asked questions
What muscles does the assisted standing chin-up work?
It primarily works the latissimus dorsi, with the biceps and forearms (brachialis and brachioradialis), rear deltoids, infraspinatus, and lower and middle trapezius assisting.
What is the difference between a chin-up and a pull-up?
A chin-up uses a supinated (underhand) grip with palms facing you, which involves the biceps more, while a pull-up uses a pronated (overhand) grip. This exercise is a chin-up, so keep your palms facing you.
Is the assisted chin-up good for beginners?
Yes. The machine supports part of your bodyweight so you can train the chin-up pattern with full range and good form, then reduce the assistance over time to build toward unassisted reps.
How much assistance weight should I use?
Use the least assistance that still lets you complete clean reps through a full range. As you get stronger, lower the assistance in small steps so the movement keeps challenging your back.
