ProgreviaHammer Strength machine row: proper form, muscles worked and common mistakes
Home › Exercises › Back › Hammer Strength machine row
How to do it
Chest supported on the pad to isolate the back; pull the handles toward your sides driving the elbows back and squeezing the shoulder blades. Each arm works independently: it fixes asymmetries.
Muscles worked
Main muscle: back. Also worked: biceps. When it plans weekly volume, the generator counts each set of this exercise as one full set for back and half a set for each secondary muscle (what is known as fractional counting).
Hammer Strength machine row: independent arms and plate loading
The big difference from a standard machine row is how the arms move. Here the levers are independent and, depending on the model, the path converges or follows a natural arc, so each side takes its own route instead of sharing one track. You can pull with one arm while the other stays put, or alternate, and it shows right away if one side is pulling less. It is also loaded with plates, so you add weight in the increments your plate rack allows, including small ones if the gym has them.
Choose it when you want to train the back with a supported chest and still spot differences between sides; the weaker arm tends to show a shorter range. It also stands in for the barbell row when you would rather not load your lower back, since your chest is braced. The trade-off is convenience: swapping plates takes longer, so it is not ideal for quick drop sets.
A detail that belongs to this one: do some sets one arm at a time, starting with the weaker side, and match the reps on the other. Keep your torso against the pad throughout; if the shoulder rides up or the trunk twists to finish a rep, the weight is already too high for that side.
Technical sheet
- Movement pattern
- Horizontal pull
- Minimum level
- Beginner
- Technical demand
- Basic
- Fatigue it generates
- High (1.2 out of 2.2)
- Risk if technique breaks down
- Low
- Peak tension in the stretched position
These are the values the generator uses to decide where the exercise goes within the session.
Recommended sets and reps
As a compound lift, it fits in 3–5 sets of 5–12 reps leaving 1–3 reps in reserve (RIR). Prioritize it at the start of the session, when you're fresh.
Common mistakes to avoid
- Pulling with the arms instead of starting the movement by retracting the shoulder blades and driving the elbows back.
- Not adjusting the seat and pads to your body: your joint should line up with the machine's pivot.
- Cutting short the part of the range where the muscle is stretched: that is exactly where this exercise gives the most stimulus.
What the research says
Because it is a multi-joint lift, the 2021 review of the repetition continuum by Schoenfeld and colleagues leaves room to choose: both heavy and moderate sets build muscle if they finish near failure, but maximal strength needs some heavy work.
It loads the muscle in the stretched position, which is where several trials find more growth: more hypertrophy from seated than lying leg curls (Maeo and colleagues, 2021) and better quad results from training the long part of the range (Pedrosa and colleagues, 2022). So do not cut the bottom of the rep short.
On how hard to push: the meta-analysis by Refalo and colleagues (2023) found no clear advantage in going to failure over stopping just short of it. That is why the generator programs it with reps in reserve (RIR) instead of asking for failure on every set.
- Schoenfeld BJ, Grgic J, Van Every DW, Plotkin DL. Loading recommendations for muscle strength, hypertrophy, and local endurance: a re-examination of the repetition continuum. Sports. 2021;9(2):32.
- Maeo S, Huang M, Wu Y, et al. Greater hamstrings muscle hypertrophy but similar damage protection after training at long versus short muscle lengths. Medicine & Science in Sports & Exercise. 2021;53(4):825-837.
- Pedrosa GF, Lima FV, Schoenfeld BJ, et al. Partial range of motion training elicits favorable improvements in muscular adaptations when carried out at long muscle lengths. European Journal of Sport Science. 2022;22(8):1250-1260.
- Refalo MC, Helms ER, Trexler ET, Hamilton DL, Fyfe JJ. Influence of resistance training proximity-to-failure on skeletal muscle hypertrophy: a systematic review with meta-analysis. Sports Medicine. 2023;53(3):649-665.
How Hammer Strength machine row compares with other back exercises
Of the 18 back exercises in the catalogue, ranked from least to most fatiguing by the values the generator uses, Hammer Strength machine row is number 11 (tied with one other).
It sits in the middle of its group: it works as the day's main exercise or as a second or third one.
With different equipment, the same movement pattern offers 9 alternatives, such as Seated band row, High cable row and Inverted row.
| Exercise | Equipment | Fatigue | Technique |
|---|---|---|---|
| Inverted row | bodyweight | Moderate (0.9 out of 2.2) | Basic |
| Gironda row | cable | Moderate (1 out of 2.2) | Needs coaching |
| Seated cable row | cable | Moderate (1 out of 2.2) | Basic |
| Single-arm dumbbell row | dumbbells | High (1.2 out of 2.2) | Basic |
| Hammer Strength machine row | machine | High (1.2 out of 2.2) | Basic |
| Meadow row | barbell | High (1.4 out of 2.2) | Needs coaching |
| T-bar row | barbell | High (1.6 out of 2.2) | Needs coaching |
| Barbell row | barbell | Very high (1.9 out of 2.2) | Needs coaching |
Tension with the muscle stretched. Hammer Strength machine row loads the muscle when it is longest. In the review by Kassiano et al. (2023), across eleven studies, full range of motion and partials performed in the initial part of the movement — with the muscle long — produced more growth than partials performed at the end.
On a machine. In the meta-analysis by Haugen et al. (2023), with thirteen studies and 1,016 participants, there were no significant differences in muscle growth between training on machines and with free weights.
- Kassiano W, Costa B, Nunes JP, Ribeiro AS, Schoenfeld BJ, Cyrino ES. Which ROMs lead to Rome? A systematic review of the effects of range of motion on muscle hypertrophy. Journal of Strength and Conditioning Research. 2023;37(5):1135-1144.
- Haugen ME, Vårvik FT, Larsen S, Haugen AS, van den Tillaar R, Bjørnsen T. Effect of free-weight vs. machine-based strength training on maximal strength, hypertrophy and jump performance: a systematic review and meta-analysis. BMC Sports Science, Medicine and Rehabilitation. 2023;15(1):103.
Related guide
The best back exercises: a zone-by-zone guide
Alternative exercises
More horizontal pull exercises
Add it to your routine
Progrevia can generate a personalized routine that includes Hammer Strength machine row based on your level, goal and available days.
Build your back workout
Generate a full routine with the emphasis on back and Hammer Strength machine row among your preferred exercises. Free, no sign-up.
Not sure what to pick? The setup assistant walks you through it, one question at a time. Open the assistant
Frequently asked questions
What muscles does Hammer Strength machine row work?
Hammer Strength machine row mainly works the back muscle group, plus synergist and stabilizer muscles depending on the variation.
How many sets of Hammer Strength machine row should I do?
Between 3 and 5 sets per session, adjusting the total weekly volume for back to your level (about 10–20 sets per muscle per week).
Do the two arms really work independently on a Hammer Strength row?
The levers move separately, so each arm has to do its own work and a stronger side cannot take over the way it can on a shared bar. That does not mean the muscles are isolated, and your torso still helps stabilize. It is a useful way to see and reduce strength differences between sides, especially if you match reps on the weaker one.
Progrevia builds gym routines from your own data: periodization, RIR and week-by-week progression. Free, no card.