Why sweep the leg out on a diagonal instead of straight back?

The diagonal adds hip abduction to hip extension, which shifts more of the work onto the glutes and less onto the hamstrings. In a study of prone hip extension with the knee bent, gluteus maximus activity was highest with the thigh abducted 30 degrees, while hamstring activity was highest with the thigh in line with the body. That was a different body position and no cable, but it is the same pairing of extension and abduction this exercise uses.

How heavy should I go?

Light. The standing leg and the lower back give out well before the glute does here, so pick a weight you can sweep and pause with for 10 to 15 controlled reps per leg. If you have to swing the leg or hang off the frame to move the stack, it is too heavy.

Where should this go in a session?

Treat it as accessory work after your main squat or hinge, or as a finisher at the end of a lower-body day. It costs little recovery, so running it two or three times a week alongside heavier glute work is reasonable.

Can I do this without a cable machine?

Yes. A resistance band anchored low loads the same sweep, so Band Single-Leg Kickback is the closest substitute, and Bent Leg Kickback on the floor removes the balance demand as well. Band tension rises as the leg travels, so the hardest point sits at the end of the sweep rather than across the whole range.

Can I do this if my lower back is sensitive?

Often yes, provided you keep the sweep short and stop where the hip stops rather than where the leg can reach. Start on the lightest plate, keep a hand on the frame, and if the ache turns up in your back instead of your glute, switch to something floor-based like Glute Bridge and have it looked at.

Cable Diagonal Kickback

What Is the Cable Diagonal Kickback?

Cable Diagonal Kickback is an isolation exercise that primarily targets the glutes and also engages the hamstrings and the hip stabilizers. It is an intermediate-level movement performed standing beside a cable machine with an ankle cuff clipped to the low pulley, sweeping one leg back and out on a diagonal while the other leg carries your weight. The cable keeps tension on the working hip through the whole sweep, and balancing on one leg makes it as much a hip stability drill as a glute exercise.

The diagonal path is what separates it from a straight-back kickback. Taking the leg out to the side as it travels behind you adds hip abduction to hip extension, which pulls the upper fibers of the gluteus maximus and the gluteus medius into the work instead of leaving it to the lower glute and the hamstrings. Starting with the leg reaching across toward the machine also lengthens those fibers before the sweep begins, so the muscle is loaded over a fuller range than a short kick straight backward would give it.

This is accessory work rather than a main lift, with no competition or fitness-test role, and the load stays light because you are standing on one leg. It fits after your main squat or hinge work, or at the end of a lower-body session as a finisher, in higher rep ranges of roughly 10 to 15 per leg. Being a single-leg movement, it also exposes side-to-side differences in glute strength and balance that a two-legged lift can hide.

It suits lifters who already have basic glute and single-leg work in place and want direct upper-glute volume without adding any load to the spine. If balancing while the cable pulls your leg sideways is too much at first, build up with Glute Bridge and Standing Hip Abduction, or use Bent Leg Kickback on the floor so the balance demand comes out of it. Because the weight is light, mind-muscle connection matters more here than the number on the stack, and most people get more out of pausing at the end of the sweep than out of adding another plate.

Muscles Worked

MuscleActivation

Gluteus Maximus: Primary
Gluteus Medius: High
Gluteus Minimus: Medium
Biceps Femoris: Low
Erector Spinae: Low
Semitendinosus: Low
Adductor Magnus: Minimal
Tensor Fasciae Latae: Minimal

Instructions

Attach an ankle cuff to the low pulley of a cable machine and select a light weight.
Fasten the cuff just above the ankle of the leg that will be farther from the machine.
Stand side-on to the machine, about an arm's length away, and hold the upright with the hand nearest it.
Shift your weight onto the inside leg, the one closest to the machine, and keep that knee slightly soft.
Let the cuffed leg reach across toward the machine until the toes rest lightly on the floor past the standing foot and the cable is already under tension.
Stand tall with a neutral spine, square your hips to the front and brace your core.
Keeping the knee straight, sweep the cuffed leg back and away from the machine on a diagonal until the thigh is behind you and out to the side.
Stop the sweep the moment the hips start to rotate open or the lower back starts to arch.
Squeeze the glute briefly at the end of the range, then return along the same diagonal under control without letting the stack settle.
Finish all the reps on that leg, then turn around, move the cuff to the other ankle and repeat.

Common Mistakes

Arching the lower back
Once the hip has run out of extension, lifting the leg higher only extends the lumbar spine and takes the work off the glute.
Rotating the pelvis open
Letting the working hip turn toward the ceiling buys extra range from the spine and the standing hip instead of from the muscle you are training.
Losing the diagonal
Sweeping the leg straight backward turns this into an ordinary kickback and drops the abduction that brings the upper glute into the movement.
Using too much weight
A heavy stack forces you to swing the leg and hang off the frame, which replaces glute tension with momentum.
Letting the stack rest between reps
Returning the leg past the point where the cable goes slack hands the glute a break on every rep and wastes the constant tension the cable is there to provide.

Injuries

Cable Diagonal Kickback is a low risk exercise when performed with proper technique. The weight is light, nothing is loaded through the spine, and the hand on the frame takes most of the balance risk out of it. What goes wrong is almost always range of motion rather than load.

The hip only extends a short way behind the body, so a leg that keeps traveling after the hip has run out of room is being moved by the lower back instead of the glute. That is where the strain shows up, either as an ache in the lumbar spine from repeated extension or as a pinch at the front of the standing hip when the pelvis tips and rotates to let the leg go further. The cuff itself can bruise the ankle or numb the foot when it is fastened straight over the ankle bone or cinched too tight.

Keep the load light enough to pause at the end of the sweep, keep the standing knee soft, and let the hand on the frame do the balancing so your trunk is not fighting the cable. If the standing hip cramps or your balance gives out before the working glute tires, regress to Bent Leg Kickback or Glute Bridge on the floor, or drop the diagonal and start with Standing Hip Abduction. Once it feels easy, more progress comes from loading the glutes heavily elsewhere with something like Barbell Hip Thrust than from stacking weight onto the cable.

Stop the set on a sharp pinch at the front of the hip, pain in the lower back rather than effort in the glute, or pins and needles in the cuffed foot. None of those settle by pushing through, and all three usually clear once the sweep is shortened and the cuff is refitted just above the ankle bone.

Overview

Primary Focus: Glutes
Equipment: Cable
Modality: Strength
Difficulty: Intermediate

Alternative Exercises

Frequently Asked Questions

Q: Why sweep the leg out on a diagonal instead of straight back?: The diagonal adds hip abduction to hip extension, which shifts more of the work onto the glutes and less onto the hamstrings. In a study of prone hip extension with the knee bent, gluteus maximus activity was highest with the thigh abducted 30 degrees, while hamstring activity was highest with the thigh in line with the body. That was a different body position and no cable, but it is the same pairing of extension and abduction this exercise uses.
Q: How heavy should I go?: Light. The standing leg and the lower back give out well before the glute does here, so pick a weight you can sweep and pause with for 10 to 15 controlled reps per leg. If you have to swing the leg or hang off the frame to move the stack, it is too heavy.
Q: Where should this go in a session?: Treat it as accessory work after your main squat or hinge, or as a finisher at the end of a lower-body day. It costs little recovery, so running it two or three times a week alongside heavier glute work is reasonable.
Q: Can I do this without a cable machine?: Yes. A resistance band anchored low loads the same sweep, so Band Single-Leg Kickback is the closest substitute, and Bent Leg Kickback on the floor removes the balance demand as well. Band tension rises as the leg travels, so the hardest point sits at the end of the sweep rather than across the whole range.
Q: Can I do this if my lower back is sensitive?: Often yes, provided you keep the sweep short and stop where the hip stops rather than where the leg can reach. Start on the lightest plate, keep a hand on the frame, and if the ache turns up in your back instead of your glute, switch to something floor-based like Glute Bridge and have it looked at.