Cable Deficit Stiff-Leg Deadlift
What Is the Cable Deficit Stiff-Leg Deadlift?
Cable Deficit Stiff-Leg Deadlift is a compound exercise that primarily targets the hamstrings and glutes and also engages the adductor magnus, the spinal erectors and the grip. It is an intermediate-level movement in which you stand on a step platform facing a low cable pulley, hold a rope attachment in front of your thighs and hinge forward from the hips while your knees keep the same slight bend from the first rep to the last.
The "stiff-leg" in the name refers to that fixed knee angle, not to locked knees. Because the knees barely move, almost all of the motion comes from the hips, and the hamstrings are stretched hard as the torso tips forward. The step platform raises you above the pulley, so the rope can travel lower than it could from the floor when your hamstrings allow it, and the cable keeps pulling forward toward the machine even when you stand tall. That keeps the glutes and hamstrings working at the top of each rep, where a barbell version goes almost weightless.
The stiff-leg deadlift pattern is a well-studied hamstring builder. In a nine-week trial with untrained adults, stiff-leg deadlift training grew the hamstrings, with the largest gain in the semimembranosus, while Nordic hamstring training grew mainly the semitendinosus. That is one reason coaches pair a hinge like this with a knee-flexion exercise such as the Nordic Hamstring Curl or the Machine Lying Leg Curl rather than relying on either alone.
The cable version suits lifters who want a smooth, easily adjusted load for hamstring and glute accessory work, usually placed after the main lifts of a lower-body session. It asks for more hamstring length than a flat-ground hinge, so learn the pattern first with the Cable Romanian Deadlift or the Dumbbell Stiff-Leg Deadlift and add the step once you can reach your usual depth with a flat back. Focusing on the stretch in the back of your thighs on the way down, then driving the hips forward with the glutes, helps keep the work out of the lower back.
Muscles Worked
- Biceps Femoris
- Primary
- Gluteus Maximus
- Primary
- Semimembranosus
- Primary
- Semitendinosus
- Primary
- Adductor Magnus
- High
- Erector Spinae
- High
- Flexor Carpi Ulnaris
- Minimal
Instructions
- Set a cable pulley to its lowest position and attach a rope.
- Place a step platform in front of the machine, far enough back that the cable stays taut and the weight stack stays lifted when you hinge to the bottom.
- Hold the ends of the rope with a neutral grip, palms facing each other, and step onto the platform facing the machine with your feet hip-width apart, toes forward and whole feet on the step.
- Stand tall with your arms straight and the rope in front of your thighs. Soften your knees into a slight bend, brace your core and draw your shoulders back.
- Push your hips back and let your torso tip forward, keeping the same knee bend and a flat back. Let the rope slide down close to your legs.
- Lower until you feel a strong stretch in your hamstrings, stopping just before your lower back starts to round.
- Drive your hips forward and squeeze your glutes to return to standing, keeping your arms straight and the knee angle unchanged.
- Finish tall with your hips under your shoulders, without leaning back, and repeat for the desired reps.
- After the last rep, stand tall and step toward the machine to let the weight settle before stepping off the platform.
Common Mistakes
Rounding the back to reach lower
Chasing extra depth from the step by rounding the spine shifts the load from the hamstrings onto the lower back.
Locking the knees straight
Snapping the knees fully straight strains the back of the knee and the lower back instead of keeping the slight, fixed bend the movement uses.
Bending the knees more as you lower
Letting the knees travel forward turns the hinge into a squat, which takes tension off the hamstrings and moves it to the quads.
Letting the rope drift toward the machine
When the rope moves away from your legs, the cable pulls your torso forward and the lower back has to fight it.
Standing too close to the stack
Standing too close lets the weight stack touch down at the bottom of the rep, so the hamstrings lose tension right where the stretch is greatest.
Leaning back at the top
Pushing the hips past the feet and arching the lower back at lockout adds spinal stress without working the glutes any harder.
Injuries
Cable Deficit Stiff-Leg Deadlift is a medium risk exercise when performed with proper technique. The lower back is the most common strain point: the step invites you to reach deeper than your hamstrings allow, and the extra depth is often bought by rounding the spine under load. The hamstrings themselves can also be strained at the bottom if you bounce out of the stretch or drop into it quickly.
Let your flat back set the depth, not the height of the step. Lower slowly, stop just before your lower back starts to round, and keep the rope close to your legs so the cable does not pull your torso toward the machine. Use a sturdy step with a non-slip top, keep your whole foot on it, and finish each set standing tall and stepping toward the machine to let the weight settle before you step off.
If the deficit is too much, regress to the Cable Romanian Deadlift or the Dumbbell Romanian Deadlift on flat ground. Once the cable version feels controlled, the Barbell Stiff-Leg Deadlift and the Barbell Deficit Romanian Deadlift are the natural progressions for heavier loading.
Stop the set if you feel a sharp or pulling pain in the back of the thigh, pain in the lower back, or tingling or numbness running down the leg. Those are signs of a strain or an irritated nerve rather than a normal hamstring stretch, and they are worth having checked before you train the movement again.
- Primary Focus
- Hamstrings and glutes
- Equipment
- Cable and step platform
- Modality
- Strength
- Difficulty
- Intermediate
Alternative Exercises
Frequently Asked Questions
- Q: Is it still a stiff-leg deadlift if my knees are slightly bent?
Yes. Standard stiff-leg deadlift technique keeps the knees slightly flexed and held at that angle, so the hips do the moving. Locking the knees straight is not the goal and only adds strain.
- Q: What does standing on the step add?
It raises you above the low pulley, so you can lower the rope further than from the floor and stretch the hamstrings over a longer range. That extra range only helps if you can reach it with a flat back.
- Q: How high should the step platform be?
A low step of about 2 to 4 inches is plenty for most people, and the platform without risers is the right place to start. Raise it only when you already reach the bottom of your range with a flat back and still have room to go.
- Q: How is it different from a Cable Romanian Deadlift?
Both are low-cable hip hinges. The Cable Romanian Deadlift is done from the floor and usually lets the knees bend a little more as the hips travel back, while this version holds a straighter, fixed knee angle and adds the deficit, so it asks more of your hamstring length.
- Q: Why do I feel it in my lower back?
Usually because the back rounds near the bottom, the rope drifts away from your legs or the weight is more than your hamstrings can control. Shorten the range, keep the rope close and lighten the stack until the stretch stays in the back of your thighs.