Should I lean forward during this exercise?

You can, as long as your spine stays neutral and the lean stays fixed for the whole set. In an isometric study of healthy young men, pushing the leg out with the hip more bent raised upper gluteus maximus activity and lowered tensor fasciae latae activity, while gluteus medius activity did not change, so leaning forward likely shifts some work to the upper glutes, though the study stopped at 80 degrees of hip flexion. Sitting back against the pad, as shown, is the standard setup and the easiest to keep stable.

Can this help with knee or hip pain?

Strengthening the hip abductors is a standard part of rehab for pain at the front of the knee, and this machine is an easy way to load them. Pain on the outside of the hip is different, because irritated gluteal tendons often flare with heavy loading, so start light in a partial range and follow a clinician's guidance.

Is this a good exercise for glute building?

Yes, it’s a great accessory movement for targeting the gluteus medius and rounding out glute training.

Will this exercise slim my outer thighs or hips?

No. Training a muscle does not burn the fat over it, so fat loss depends on your overall diet and activity, while this exercise builds the muscles on the sides of your hips.

Machine Hip Abduction

What Is the Machine Hip Abduction?

Machine Hip Abduction is an isolation exercise that primarily targets the glutes, especially the gluteus medius, and also engages the gluteus minimus, the upper gluteus maximus and the tensor fasciae latae. It is a beginner-level movement: the seat, backrest and guided arc of the machine take balance out of the exercise, so the side-hip muscles can be loaded directly from the first session.

The hip abductors move the thigh out to the side, but their bigger job in daily life and sport is holding the pelvis level when you stand on one leg and keeping the knee from drifting inward when you walk, run, land or squat. This machine trains them in isolation, so it usually sits near the end of a lower-body session as accessory work after squats, lunges or hip thrusts, done for moderate to high reps.

In a small study of eleven men, the hip abductor machine activated the gluteus medius as much as side-lying hip abduction and the clamshell did, while asking less of the tensor fasciae latae relative to the gluteus medius than either. Because you sit with your hips bent, the upper fibers of the gluteus maximus also help push the knees apart, and leaning the torso forward bends the hips further and likely adds to that share.

The exercise suits beginners learning to feel their glutes, lifters filling out glute and hip training, and runners or field athletes who want stronger hip control. Hip abductor strengthening is also a standard part of rehab for pain at the front of the knee. If no machine is available, or the lightest plate is still too heavy, build up with the Clamshell and Side Hip Abduction first.

Muscles Worked

MuscleActivation

Gluteus Medius: Primary
Gluteus Maximus: High
Gluteus Minimus: High
Tensor Fasciae Latae: Medium
Sartorius: Low

Instructions

Set the machine's start position so your knees sit close together, and choose a light weight.
Sit with your hips all the way back in the seat and your back against the reclined backrest.
Place your feet on the foot bars with your knees bent at about 90 degrees and the pads resting against the outside of your knees.
Grip the handles at the sides of the seat.
Brace your core and push your knees outward against the pads in a smooth arc, keeping your hips and back against the pads.
Pause briefly when your legs are as wide as you can take them without your hips lifting or your torso rocking.
Bring your knees back together slowly, stopping just before the weight stack touches down.
Repeat for the desired number of reps.

Common Mistakes

Using momentum
Swinging the legs outward instead of using slow, controlled movement reduces effectiveness and increases injury risk.
Cutting the range short
Pushing the knees only a little way apart skips much of the work the abductors can do, so take each rep as wide as you can control.
Lifting off the seat
Raising your hips or shifting in the seat takes tension off the target muscles and can strain your lower back.
Rocking the torso
Throwing the upper body forward or back to start each rep turns the set into a swing and moves the strain from the hips to the lower back.
Letting the pads slam
Allowing the pads to snap back together drops tension on the abductors during the return and jars the weight stack.

Injuries

Machine Hip Abduction is a low risk exercise when performed with proper technique. The machine guides the path of the legs and the seat supports the trunk, so most problems come from loading too heavy, rocking the torso to start each rep or letting the pads snap back together.

The tissue most likely to complain is the group of gluteal tendons on the outside of the hip, which can become irritated by sudden jumps in load. Rocking or arching the back to move a weight that is too heavy shifts the strain into the lower back instead. Start light, raise the weight in small steps, keep your hips and back on the pads, and control both directions of every rep.

If you already have pain on the outside of the hip, ask a clinician before loading this machine, start with a light weight in a partial range and avoid crossing your legs past the middle between sets. Easier options are the Clamshell and Side Hip Abduction; once the machine feels easy, standing work such as the Cable Hip Abduction and Band Lateral Walk adds a balance demand.

Stop the set if you feel sharp pain on the outside of the hip, pain in the groin or a pinching sensation at the front of the hip.

Overview

Primary Focus: Glutes and hips & groin
Equipment: Machine
Modality: Strength
Difficulty: Beginner

Alternative Exercises

Other Names for the Machine Hip Abduction

The Machine Hip Abduction is also known as:

Hip Abductor Machine
Outer Thigh Machine

Frequently Asked Questions

Q: Should I lean forward during this exercise?: You can, as long as your spine stays neutral and the lean stays fixed for the whole set. In an isometric study of healthy young men, pushing the leg out with the hip more bent raised upper gluteus maximus activity and lowered tensor fasciae latae activity, while gluteus medius activity did not change, so leaning forward likely shifts some work to the upper glutes, though the study stopped at 80 degrees of hip flexion. Sitting back against the pad, as shown, is the standard setup and the easiest to keep stable.
Q: Can this help with knee or hip pain?: Strengthening the hip abductors is a standard part of rehab for pain at the front of the knee, and this machine is an easy way to load them. Pain on the outside of the hip is different, because irritated gluteal tendons often flare with heavy loading, so start light in a partial range and follow a clinician's guidance.
Q: Is this a good exercise for glute building?: Yes, it’s a great accessory movement for targeting the gluteus medius and rounding out glute training.
Q: Will this exercise slim my outer thighs or hips?: No. Training a muscle does not burn the fat over it, so fat loss depends on your overall diet and activity, while this exercise builds the muscles on the sides of your hips.