Single-Arm Cable Shrug

What is the Single-Arm Cable Shrug?

The single-arm cable shrug is a traps isolation performed one side at a time on a low cable, elevating one shoulder against constant tension. The cable keeps steady pull on the trap through the whole short range (including the top, where free weights go lightest), and working one side alone lets you focus on and even out a lagging trap with a strong peak contraction.

Muscles worked

Primary: Traps

The upper trapezius of the working side is the target, elevating that shoulder blade toward the ear against the cable and lowering it under control against constant tension.

Secondary: Forearms

The forearm of the working side grips the handle to hold the load through the set, since the arm hangs straight.

How to perform the Single-Arm Cable Shrug

1. Attach a single handle to a low pulley, take it in one hand, and stand side-on or facing the stack with the arm straight.
2. Working one side against the cable gives constant tension and lets you brace the trunk against the pull.
3. Let the cable draw the shoulder down into a full stretch at the bottom.
4. Elevate that shoulder straight up toward the ear, resisting the cables downward line of pull.
5. Squeeze the trap at the top, then lower under control against the constant tension.
6. Keep the neck neutral and the torso upright rather than leaning to help the shoulder rise.

Suggested working range: 12–20 reps. Default progression: double progression.

Mechanics

A unilateral single-joint isolation on a cable: one shoulder blade elevates and depresses while the arm hangs straight, and the cable line keeps tension on the trap across the whole range, including the fully-shrugged top. As a one-sided isolation it exposes side-to-side differences and, unlike a dumbbell, keeps the peak contraction loaded, the main reason to pick the cable for single-arm work.

Form cues

• •Stand beside a low pulley, hold the handle with a straight arm, and brace the torso.
• •Shrug the working shoulder straight up toward the ear and pause to squeeze at the top.
• •Lower under control to a full stretch rather than letting the cable snap the shoulder down.
• •Match reps and range on the weaker side and let it set the load for both.

Common mistakes

• •Leaning the torso to help the shoulder rise instead of bracing and shrugging cleanly.
• •Letting the cable drag the shoulder down fast rather than controlling the descent.
• •Rolling the shoulder backward instead of elevating it straight up.
• •Bending the elbow to assist the cable rather than isolating the trap.

Variations & alternatives

• •Cable shrug: the two-handed version for loading both traps together.
• •Single-arm dumbbell shrug: a free-weight one-arm shrug where the top goes lightest.
• •Behind-the-back cable shrug: a low cable behind the body for a different line of pull.
• •Incline dumbbell shrug: a prone angle that biases the mid- and lower traps.

Face Pull

Traps · Cable

Barbell Shrug

Traps · Barbell

Dumbbell Shrug

Traps · Dumbbell

Cable Shrug

Traps · Cable

Smith Machine Shrug

Traps · Machine

Programming: sets, reps & when to use it

Program single-arm cable shrugs as a traps accessory in the library’s 12–20 rep range, where the constant tension rewards a controlled tempo and a hard squeeze at the top. They’re ideal for bringing up a weaker trap, since neither side can carry the other and the cable keeps the peak loaded. Run the weaker side first and match it. A few sets per side after your main work suffice.

Frequently asked questions