Dumbbell Lu Raise
What Is the Dumbbell Lu Raise?
Dumbbell Lu Raise is an isolation exercise that primarily targets the shoulders and also engages the upper back and the trunk. It is an intermediate-level movement performed standing, raising two light dumbbells with straight arms from the front of the thighs out to the sides and all the way overhead, then lowering them back down the same path.
The name is not an abbreviation. The movement is named after Lu Xiaojun, the Chinese Olympic weightlifting champion who built it into his shoulder work, and it is usually written as a Lu raise. Weightlifters use it because the snatch and the jerk are caught and held with straight arms overhead, and this trains strength and control in exactly that position rather than the pressing strength that gets a bar there. Outside weightlifting it has spread as accessory shoulder work for anyone who wants the deltoid loaded across its whole range.
What separates it from a Dumbbell Lateral Raise followed by a Dumbbell Standing Shoulder Press is that the elbows never bend. A lateral raise loads a long, straight arm but stops around shoulder height, and a press picks up above shoulder height with the elbows bent, which shortens the lever and hands a large share of the work to the triceps. Doing both leaves the arm at full length above shoulder height untrained. The Lu raise covers the whole arc in one continuous line, so the load never transfers off the shoulder.
Getting a straight arm overhead is not only a deltoid job. The shoulder blade has to rotate upward underneath it, and the shoulders are meant to travel toward the ears near the top rather than staying pinned down. A review of shoulder muscle function during arm elevation describes the serratus anterior and the lower trapezius as the muscles that rotate the shoulder blade upward, with the upper trapezius elevating the collarbone. The deltoid still carries the load, which is why the exercise is filed under shoulders, but the upper back does real work and usually fatigues alongside it.
The catch with dumbbells is that the load is heaviest at shoulder height, where the arm is horizontal and the lever on the shoulder is longest, and gets lighter as the arms approach vertical. That makes the mid-range the limiting point and the overhead finish more a test of position and control than of raw load, so the dumbbells stay small, with light sets of 8 to 15 reps and a brief pause overhead, placed after the main pressing work or run with the lightest pair in the rack as a shoulder warm-up. It suits overhead athletes, lifters and desk-bound clients who want range as well as size. If the arms cannot reach overhead without arching the lower back, build the pattern with a supported version such as Dumbbell Incline Y-Raise or Lying Prone Y Raise first, and add standing dumbbells once the position is there.
Muscles Worked
- Deltoid
- Primary
- Upper Trapezius
- High
- Infraspinatus
- Medium
- Lower Trapezius
- Medium
- Teres Minor
- Low
- Rectus Abdominis
- Minimal
Instructions
- Stand tall with your feet about shoulder width apart, a dumbbell in each hand hanging in front of your thighs, palms turned toward you and the dumbbells almost touching.
- Set your elbows almost straight, with a small bend that does not change for the rest of the rep.
- Brace your abs and squeeze your glutes so your ribs stay down and your lower back does not arch.
- Raise both arms out to the sides in one smooth arc until they reach shoulder height and your body forms a T, palms facing the floor.
- Keep going past shoulder height with the arms still straight, letting your shoulder blades rotate upward and your shoulders travel toward your ears.
- Let your forearms turn as the arms rise so your palms finish facing forward rather than down.
- Finish with the arms vertical and a little wider than your head, dumbbells above your shoulders, torso upright and ribs still down.
- Pause for a beat overhead, then reverse the same path under control, rotating your palms back toward the floor as the arms come down to shoulder height.
- Keep lowering out to the sides until the dumbbells return to the front of your thighs, then reset and start the next rep.
Common Mistakes
Using lateral raise weight
A pair that feels right for a lateral raise is far too heavy once the arms have to keep going overhead, and the rep turns into a heave.
Bending the elbows overhead
Letting the elbows break and pressing the dumbbells up above shoulder height hands the work to the triceps and skips the straight-arm range the exercise exists to train.
Pinning the shoulder blades down
Holding the blades locked down and back stops them rotating upward, so the arms stall short of vertical and the joint takes the end range instead.
Arching to finish the rep
Pushing the ribs forward and arching the lower back fakes the last few degrees overhead and loads the lumbar spine rather than the shoulders.
Starting with a dip and a swing
Bending the knees and throwing the dumbbells off the thighs carries them through the hardest part of the range on momentum instead of muscle.
Dropping the arms on the way down
Letting the dumbbells fall from overhead gives away the eccentric half of the rep and drops the arms into the mid-range faster than the shoulder can control.
Injuries
Dumbbell Lu Raise is a medium risk exercise when performed with proper technique. The load is small, but the arms are long and the movement spends every rep in the range where the shoulder has the least room, so it asks more of the joint than a lateral raise that stops at the top of the T. Strain shows up in three places: under the point of the shoulder, where the rotator cuff tendons pass beneath the acromion between roughly 60 and 120 degrees of elevation; at the front of the shoulder, when the last part of the range is forced rather than owned; and in the lower back, when lifters arch to finish a rep the shoulders cannot.
Two things protect the mid-range. The first is load, and the honest answer is that this movement takes far less than a lateral raise. The second is rotation: let the arms turn outward as the hands pass shoulder height so the palms end up facing forward overhead, instead of driving through the whole arc with the palms locked toward the floor. Ultrasound of healthy young men holding a 4 kg load measured more space beneath the acromion at 90 degrees of abduction with the arm turned maximally outward than at 90 degrees with the arm unrotated. Let the shoulder blades rotate upward near the top rather than holding them pinned down, and keep the ribs down so the overhead position comes from the shoulders and not from leaning back.
If the full overhead finish is not available yet, train the part of the range you own. Stopping at shoulder height makes it a Dumbbell Lateral Raise, which is a reasonable place to stay for a while. Cable Y Raise and Band Y Raise reach overhead on a diagonal path that leaves more room at the joint than a straight sideways arc, and Dumbbell Incline Y-Raise supports the chest and removes the balance and trunk demand entirely. Progress by owning the overhead pause first, then adding reps, and only then a heavier pair.
Stop the set on a sharp pinch under the point of the shoulder as the arms pass through the middle of the range, on pain at the front of the joint, or on tingling down the arm, and do not train a shoulder that already hurts at rest. Dull fatigue across the shoulder cap and between the shoulder blades is expected and is not a reason to stop.
Frequently Asked Questions
- Q: What does the LU in Dumbbell Lu Raise stand for?
It is not an abbreviation. The exercise is named after Lu Xiaojun, the Chinese Olympic weightlifting champion who made it a fixture of his shoulder training, and most gyms and coaches write it as a Lu raise.
- Q: How is this different from doing a lateral raise and then a shoulder press?
The elbows stay straight the whole way, so one continuous arc covers everything from the thighs to overhead. Dumbbell Lateral Raise stops around shoulder height and Dumbbell Standing Shoulder Press picks up from there with the elbows bent, which shortens the lever and brings the triceps in, so that pair never loads a fully straight arm above shoulder height.
- Q: How much weight should I use?
Much less than you would pick for a lateral raise, because the same dumbbell now has to keep moving past the point where the raise normally ends. Start with a pair you could pause overhead for a second on the last rep of a set of 12, and add weight only once the overhead finish is clean.
- Q: Should I let my shoulders shrug at the top?
Yes. The shoulder blades have to rotate upward for the arms to reach vertical, and that brings the shoulders toward the ears near the top. What to avoid is hiking the shoulders up before the arms have started moving, which turns the first part of the rep into a shrug.
- Q: What if I cannot get my arms all the way overhead?
Raise only as far as you can go without arching your back or bending your elbows, which usually means finishing somewhere between shoulder height and eye level. Dumbbell Incline Y-Raise and Lying Prone Y Raise support the torso while you build the range, and Cable Y Raise reaches overhead on a diagonal that most shoulders find easier.