Machine Hip Adduction
What Is the Machine Hip Adduction?
Machine Hip Adduction is an isolation exercise that primarily targets the hips and groin, specifically the adductor muscles of the inner thigh. It is a beginner-level movement: you sit on a selectorized machine with pads against the inside of your knees and squeeze your legs together against a weight stack, so the load is easy to set and the path is fixed.
The adductor group is made up of the adductor longus, adductor brevis, adductor magnus, pectineus and gracilis, and all of them pull the thigh toward the midline of the body. That is the only joint action this machine resists, which makes it one of the few ways to load the adductors directly. Squats, lunges and deadlifts also work the adductors, mostly through the adductor magnus acting as a hip extensor when the hip is deeply bent, but they never load the inward squeeze on its own.
Adductor strength matters most in sports built on kicking, skating, sprinting and quick changes of direction, where groin strains are common. In a study of professional ice hockey players, preseason hip adduction strength was 18% lower in the players who went on to strain an adductor, and a player whose adduction strength was below 80% of his abduction strength was 17 times more likely to sustain one. That links weak adductors to injury risk rather than proving this machine prevents strains, but it is why many programs train the adductors directly and pair this exercise with Machine Hip Abduction. It usually sits near the end of a lower-body session as accessory work for moderate to high reps.
The machine suits beginners, people easing back into leg training and lifters who want extra adductor volume without another heavy compound lift. It builds and strengthens the muscle of the inner thigh, but it does not burn the fat over it. Once the machine feels easy and controlled, the Copenhagen Plank Bent Knee and then the Copenhagen Plank load the adductors harder in a longer, more athletic position, and the Cossack Squat trains them through a deep stretch while standing.
Muscles Worked
- Adductor Longus
- Primary
- Adductor Magnus
- High
Instructions
- Set the starting width on the machine so the pads open to a stretch you can hold comfortably in your inner thighs, and select the weight.
- Sit tall with your back and hips pressed against the backrest and seat.
- Place your feet on the foot bars and rest the inside of your knees against the pads.
- Hold the handles at the sides of the seat.
- Brace your core and squeeze your knees together, driving the pads inward with your inner thighs until they meet in the middle.
- Pause for a moment with the pads together.
- Let your legs open slowly over 2 to 3 seconds back to the starting width, keeping tension on the weight stack.
- Repeat for the desired number of reps.
Common Mistakes
Using too much weight
Overloading the machine leads to jerky, uncontrolled reps and can increase injury risk.
Starting too wide
Setting the pads wider than a comfortable stretch puts heavy load on the inner thigh at its most lengthened point and raises the risk of a groin strain.
Shortening the range of motion
Not bringing the legs fully inward limits activation of the adductor muscles.
Letting the pads fly open
Letting the weight pull your legs apart quickly drops the stack and loads the groin hardest at the stretched end of the rep, so take 2 to 3 seconds to open.
Leaning forward or slouching
Poor posture reduces stability and can shift the focus away from the target muscles.
Injuries
Machine Hip Adduction is a low risk exercise when performed with proper technique. The seat supports your back and the machine fixes the path, so the main thing to manage is the load on the groin.
Most problems come from starting with the legs too wide, using too much weight or letting the pads fly open. The adductors are under the most strain at the stretched, wide end of the rep, especially near where the adductor longus attaches to the pubic bone, and a heavy or fast opening phase is what strains them. Set the starting width to a stretch you can hold comfortably, do a light warm-up set first, take 2 to 3 seconds to let your legs open, and add weight gradually if your inner thighs are not used to direct training. Line your knees up with the pads and adjust the seat so you sit tall against the backrest.
To make the exercise easier, reduce the weight and narrow the starting width. To progress beyond it, move on to the Copenhagen Plank Bent Knee and then the Copenhagen Plank, which load the adductors with a longer lever.
Stop if you feel sharp pain in the groin or at the pubic bone, or a pulling sensation that grows with each rep. Pain at the pubic bone or groin when squeezing the legs together against resistance is a classic sign of adductor-related groin pain, so have it assessed by a physiotherapist or doctor rather than training through it.
- Primary Focus
- Hips & groin
- Equipment
- Machine
- Modality
- Strength
- Difficulty
- Beginner
Alternative Exercises
Other Names for the Machine Hip Adduction
The Machine Hip Adduction is also known as:
- Hip Adductor Machine
- Inner Thigh Machine
Frequently Asked Questions
- Q: Can I do this exercise if I have tight hips?
Yes. Set the starting width to a stretch you can hold comfortably, use light weight, and widen it gradually over the weeks as the stretch eases rather than forcing the pads open.
- Q: How often should I include this in my routine?
One to three times per week is enough for most people, especially if you're also training other leg muscles.
- Q: Is this machine useful for athletes?
Yes, especially in sports with kicking, skating or quick changes of direction, where adductor strains are common and weak adductors are a known risk factor. Many athletes also add the Copenhagen Plank, which loads the adductors in a longer, more sport-like position.
- Q: Will the adductor machine slim my inner thighs?
No. It builds and strengthens the adductor muscles, but it does not burn the fat that sits over them, which only comes down with overall fat loss.
- Q: Should I train hip abduction too?
Yes, most programs that train the adductors directly also train the abductors, often back to back with Machine Hip Abduction. Keeping both sides strong matters in sports, where a low ratio of adduction to abduction strength has been linked to groin strains.