Assisted Close-Grip Underhand Chin-Up

Body Part: Back

Muscle: Back

Equipment: Assisted

Assisted Close-Grip Underhand Chin-Up is a machine-assisted vertical pulling exercise built around a close, palms-facing-you grip and a controlled bodyweight ascent. The assistance pad reduces the amount of body mass you have to lift, which makes it easier to practice the chin-up pattern with clean scapular motion, consistent range, and less cheating from leg swing or torso drive.

The close underhand grip shifts the emphasis toward the lats and elbow flexors while still demanding the upper back to stabilize the shoulder blades. In the image, the lifter kneels on the assist pad with the chest tall, elbows traveling down beside the ribs, and the chin moving over the bar without craning the neck forward. That setup is important because a sloppy start can turn the rep into a shrug-and-kick instead of a vertical pull.

Use the machine so you can lower under control from a dead-hang-like bottom position to a strong top position with the chin clearly above the handles or bar. The goal is not to yank the body upward; it is to pull the elbows down, keep the rib cage stacked, and let the back and arms do the work. A smooth rep should look the same on the first repetition and the last one.

This exercise is useful for building chin-up strength, reinforcing scapular depression and elbow flexion, and accumulating quality pulling volume when strict bodyweight reps are not yet reliable. It is also a practical choice for beginners or for lifters returning to vertical pulling after a layoff, because the assistance lets you find the right line of pull without sacrificing form.

Because the movement is assisted, technique matters more than chasing heavy stack weight. Choose enough assistance to keep the lowering phase controlled, the shoulders away from the ears, and the torso from rocking. When the set is done well, you should feel strong work through the lats, biceps, forearms, and upper back, with no sharp pulling in the shoulders or excessive swinging at the bottom.

Instructions

• Set the machine assistance so the knee or shin pad will support you through the full rep without forcing you to jump or drop.
• Grip the close neutral or underhand handles with palms facing you and hands about shoulder width or slightly narrower.
• Kneel or place your knees on the pad, then let your arms lengthen fully while keeping your chest lifted and shoulders away from your ears.
• Brace your midsection and set your shoulder blades down before you start the pull.
• Pull yourself upward by driving your elbows down and back, keeping your wrists stacked over your forearms.
• Bring your chin clearly above the handles or bar without craning your neck forward or kicking your legs.
• Pause briefly at the top while keeping tension in the lats and upper back.
• Lower yourself slowly until the arms are straight again and the shoulders stay controlled.
• Reset on the pad, breathe, and repeat for the planned number of reps.

Tips & Tricks

• Choose enough assistance that you can lower under control for the whole descent, not just survive the top half.
• Keep the elbows tracking close to the torso; flaring them wide usually turns the rep into a shoulder-dominant pull.
• Think about pulling the chest to the bar rather than reaching the chin forward.
• If your shoulders rise toward your ears, pause and reset the scapulae before starting the next rep.
• Use a full hang only if you can keep the shoulder joint organized; otherwise stop just short of a loose bottom position.
• A slight lean back is fine, but excessive body swing means the stack is too heavy or the set is too hard.
• Exhale as you pull and keep the ribs from flaring open at the top.
• Keep the grip firm but not death-gripped so the lats and biceps, not the forearms alone, control the motion.

Frequently Asked Questions

What does Assisted Close-Grip Underhand Chin-Up work most?

The lats do most of the work, with the biceps, forearms, and upper back helping strongly.

Can beginners perform this exercise?

Yes. The assistance makes it one of the easier ways to learn a strict chin-up pattern before progressing to bodyweight reps.

Where should my hands go on the close underhand grip?

Place them about shoulder width or slightly narrower so your elbows can stay tucked and pull straight down.

Should I kip or swing to finish the rep?

No. The image shows a strict machine-assisted chin-up, so the torso should stay quiet and the legs should not kick.

How much assistance should I use?

Use enough help to keep the pull smooth and the lowering phase controlled while still making the lats and biceps work hard.

What is a common form mistake on this machine?

Letting the shoulders shrug up, the ribs flare, or the neck jut forward usually means the rep is drifting away from the lats.

Where should the chin finish at the top?

The chin should clear the handles or bar while the chest stays tall; do not turn it into a neck-only reach.

How do I progress this exercise?

Reduce the assistance gradually, keep the same close underhand grip, and maintain a slow controlled descent.