Thigh Adductor
Also works: Glutes · Hamstrings
The seated adductor machine loads the groin directly: knees start spread wide against the pads and you squeeze them together. It is one of the few ways to train the adductors through a genuine stretch under load, which matters for anyone who plays a sport with cutting, sprinting or kicking in it.
Own the movement
Set up first, then execute. Every cue below is something you can check on your next set.
Before the first rep
- Set the start width so you feel a firm stretch in the groin at the beginning, not a sharp pull. Widen it a notch every few weeks as tolerance improves.
- Sit fully back with your lower back flat against the pad; a slouched pelvis takes range out of the hip and puts it into your spine.
- Position the pads on the inside of your knees or lower thighs, never on the inside of the shins.
- Hold the handles and pull down so your hips stay pinned to the seat under load.
- Do two warm-up sets at half your working weight before the first real set. The stretched start position is not a place to arrive cold.
Every rep
Breathing & tempo — Exhale as you squeeze the knees together, inhale as you open. Two seconds in, one-second squeeze, three seconds out — the slow return is the whole reason for doing this.
Before you load it
- If you have a current or recent groin strain, start with isometric squeezes against a ball and only load this machine once those are pain-free. The stretched start position is precisely where an unhealed adductor tears again.
Sets, reps & load
Where to start, and what to change when it stops being hard.
Begin at the lightest one or two plates and treat the first four sessions as tolerance-building rather than training. Progress by widening the start position before you add load — more range at the same weight is a bigger stimulus for this muscle than more weight over a short range. Once range is where you want it, add a plate when you can pause a full second at the closed position for every rep of three sets of 15.
What goes wrong
The errors that show up most often, and the cue that fixes each one.
Start at a width where the stretch is firm but comfortable and add a notch every two or three weeks. Range earned gradually is range that holds up; range taken on day one is a strain.
Drop the load until you can take three full seconds to open. If the stack pulls you, it is loading a stretch reflex, not your adductors.
Pull hard on the handles, keep your sacrum against the pad, and cut the set when your hips lift. Position is the exercise; once it is gone, the reps are no longer counting.
Programme abduction work in the same session or the same week at similar volume. Balanced lateral hip strength is what protects a groin when you change direction, not adductor strength alone.
Why bother
The adductor group is large — adductor magnus alone rivals the glute max in cross-sectional area — and almost nothing in a normal programme loads it in a lengthened position. Squats and lunges work it, but only in mid-range. This machine starts you at 45 degrees or more of abduction, with the groin already long and the load already on, which is exactly the position groin strains happen in.
That stretched start is the point, and it is also why people get hurt here. The first rep of the set is the most vulnerable one, because the tissue is cold and at its longest. Warming up with two light sets before your working weight is not optional on this machine the way it might be on a leg extension.
Where it fits
End of a lower-body day, or twice a week on its own if you are rehabbing or protecting a groin. Sets of 10-15 with a deliberate pause at full stretch. Pair it with abduction work rather than treating the two as opposites — hips that are strong in one direction and weak in the other are how the pattern breaks down when you change direction at speed.
If this one isn't it
No kit, too hard, or too easy — here's where to go instead.
Same job, different kit
When this gets easy
Asked and answered
Does the adductor machine actually do anything for athletes?
Yes, and this is the case where the machine earns its reputation back. Adductor strength, especially in a lengthened position, is one of the better-supported factors in groin injury risk for footballers and hockey players. Copenhagen planks are the other tool; this machine is easier to load progressively and easier to keep pain-free.
How wide should I set the starting position?
Wide enough for a clear stretch, narrow enough that you feel it in the muscle belly and not as a pull at the pubic bone. Add one notch every two or three weeks. There is no prize for the widest setting, and the people who chase it are the ones who end up rehabbing.
Will this give me a thigh gap or slim my inner thighs?
No. Training a muscle builds it; it does not remove fat from over it. If your goal is a leaner look, that is a diet and total-training question. If your goal is stronger, more resilient hips, this machine is genuinely useful.
Do I need this if I already squat and lunge?
Squats and split squats do train the adductors, but only through mid-range and mostly as hip extensors. Neither loads the groin at length. If you never change direction at speed you can skip it; if you play any field or court sport, it is worth ten minutes a week.