Band Pull-Aparts: Form, Muscles Worked, and Which Band to Use
The band pull-apart is the simplest upper-back exercise there is: hold a resistance band in front of you at shoulder height and pull it apart until your arms are out wide. It takes a light band and 20 seconds, works the muscles behind your shoulders, and fits anywhere in a session. It is also surrounded by more hype than evidence.
Here is how to do it right, what the only study of the exercise actually found, which band and grip to use, how many sets and reps, and which claims to ignore.
How to do a band pull-apart
- Set up. Stand tall and hold a light band with both hands, palms down, arms straight out in front of you at shoulder height. Grip it so the band is just taut, not slack and not stretched.
- Brace and set the shoulders. Ribs down, glutes tight, and draw your shoulder blades down and back before you pull.
- Pull apart. Keeping your arms straight or only slightly bent, pull the band apart until your arms are in line with your shoulders. Keep your upper arms at shoulder height the whole way and breathe out as you pull.
- Return under control. Bring your hands back to the start slowly. Do not let the band snap you back.
Common mistakes: shrugging your shoulders toward your ears, arching your lower back to finish the rep, bending your elbows until it turns into a row, letting the band snap back, and picking a band so heavy that your form falls apart.
Muscles worked: what the research shows
Only one study has measured muscle activity in the band pull-apart itself. Fukunaga and colleagues (2022) had 10 healthy men do pull-aparts with three hand positions (palms up, neutral, palms down) in three directions (diagonal up, horizontal, diagonal down), using a band that felt moderately hard, at a 3-second pull and 3-second return. They measured the upper, middle and lower trapezius, the rear deltoid and the infraspinatus, one of the rotator cuff muscles. Peak activity ranged from about 15 to 73 percent of each muscle's maximum.
| Variation | What it emphasized |
|---|---|
| Palms up (underhand) | Lower trapezius and infraspinatus (a rotator cuff muscle) |
| Palms down (overhand) | Rear deltoid and upper trapezius |
| Diagonal up | The highest activity of all for most of the muscles measured, including about 32 percent more middle trapezius |
| Any grip, horizontal | Middle trapezius worked about the same whatever your palms did |
Two limits are worth knowing: it was 10 healthy men doing 3 reps of each version, not a training study, and the rhomboids were not measured because surface sensors cannot isolate them. The practical takeaway is to rotate grips: palms down for the rear delts, palms up for the lower traps, and diagonals for the most work overall.
Which band and grip to use
Pull-aparts use small muscles on a long lever, so most people need a light band. In the Battle Bands 3-pack, that is the light band, rated 10 to 25 pounds; the medium band is for strong lifters doing lower reps. Band ratings are approximate across the industry: a 2016 study of one major band brand found its published tension values overstated the measured tension for most colors. Go by feel rather than the label.
Use your grip to fine-tune: a narrower grip stretches the band further and makes the rep harder, and a wider grip makes it easier. Aim for a set where the last few reps are hard but clean. Effort is a good guide: in one study of elastic tubing exercises, how hard a set felt tracked how hard the target muscles were working (Andersen and colleagues, 2010).
Battle Bunker Battle Bands
The light band is the pull-apart band for most people, the medium band is there when it gets easy, and the heavy band covers assisted pull-ups and everything else. One 3-pack, every upper-back and pulling exercise in this guide.
Shop Battle BandsSets, reps and when to do them
No study has tested an ideal dose for pull-aparts specifically, so these come from coaching practice and the American College of Sports Medicine's general guidance, which uses sets of more than 15 reps with short rests for muscular endurance and 2 to 3 days a week for beginners:
| Use | Sets and reps | How often |
|---|---|---|
| Warm-up before pressing or pull-ups | 1 to 3 sets of 10 to 20 with a light band | Most training days |
| Upper-back accessory work | 2 to 3 sets of 15 to 25, under 90 seconds of rest | 2 to 3 days a week |
| Superset with push-ups in PT test prep | 1 set of 15 to 20 after each push-up set | On push-up days |
Most military fitness tests are heavy on push-ups, so pull-aparts are an easy way to add upper-back work to a push-up program. Try a set after each push-up set in your training for the Navy PRT, the Army AFT or any other test, or use them as a warm-up before overhead pressing.
Bands vs weights
Bands are not a lesser tool. A 2019 meta-analysis of 8 studies lasting 4 to 12 weeks found elastic resistance training built strength about as well as conventional weights in both the upper and lower body (Lopes and colleagues, 2019, using the corrected results), and a 2016 meta-analysis found no significant difference in how hard the main muscles worked with elastic versus free-weight resistance (Aboodarda and colleagues, 2016). The difference is the resistance curve: a band gets harder the further you stretch it, so pull-aparts are hardest at the end of the rep. When researchers compared a band reverse fly with a dumbbell reverse fly at matched loads, the band version worked the rear deltoid slightly less and the middle deltoid and upper trapezius more, and it felt harder (Bergquist and colleagues, 2018). More on that in resistance bands vs weights.
Variations and alternatives
- Palms up: same movement, underhand grip. More lower trapezius.
- Diagonal: pull the band apart on a diagonal instead of straight across, then switch which hand finishes high.
- Not the same thing: a band pass-through takes straight arms over your head and behind you as a mobility drill. It is not a pull-apart.
| Alternative | How it works |
|---|---|
| Bent-over band T | Hinge forward with a flat back and raise the arms to a T with thumbs up. It is in the Navy's NOFFS movement library. |
| Band or dumbbell reverse fly | Same movement pattern, anchored to a post or done bent over with dumbbells. |
| Face pull | Anchor at head height and pull toward your face with elbows bent and high. More of a row than a pull-apart. |
What pull-aparts will not do
You will see pull-aparts sold as a fix for bad posture, shoulder pain and injuries. The evidence does not support that on its own. A 2019 expert viewpoint in a leading physical therapy journal concluded there is no strong evidence that posture causes pain (Slater and colleagues, 2019), and when 44 college swimmers added a 6-week elastic-tubing shoulder program, their strength and shoulder blade movement did not change compared with swimmers who did not (Hibberd and colleagues, 2012). Train pull-aparts because they build your upper back. If you have shoulder pain, see a clinician.
Build the rest of your band training with 7 resistance band exercises, upper-body band exercises and how to choose the right band size.
Sources: Fukunaga and colleagues, 2022, Int J Sports Phys Ther; Bergquist and colleagues, 2018, J Hum Kinet; Lopes and colleagues, 2019, SAGE Open Med (with corrigendum); Aboodarda and colleagues, 2016, Clin Biomech; Hibberd and colleagues, 2012, J Sport Rehabil; Andersen and colleagues, 2010, Phys Ther; ACSM position stand, 2009; Slater and colleagues, 2019, JOSPT; Navy NOFFS movement library; Uchida and colleagues, 2016, J Phys Ther Sci.
Frequently Asked Questions
What muscles do band pull-aparts work?
The upper back and the back of the shoulder: the middle, lower and upper trapezius, the rear deltoid and the infraspinatus. The only EMG study of the exercise found palms-up grips favored the lower trapezius and infraspinatus, palms-down grips favored the rear deltoid and upper trapezius, and a diagonal pull worked most of them hardest. The rhomboids work too, but they were not measured.
How do you do band pull-aparts correctly?
Hold a light band at shoulder height with straight arms and the band just taut. Set your shoulder blades down and back, then pull the band apart until your arms are in line with your shoulders, keeping your arms at shoulder height. Pause, then return slowly without letting the band snap back.
Are band pull-aparts effective?
For training the upper back, yes: EMG shows moderate to high activity in the trapezius, rear deltoid and infraspinatus, and reviews find elastic bands build strength about as well as weights. What they are not proven to do is fix posture, relieve pain or prevent injuries on their own.
Can you do band pull-aparts every day?
No study has tested daily pull-aparts. With a light band and sets well short of failure, many coaches use them daily as a warm-up. If you train them hard, 2 to 3 days a week fits general strength training guidelines.
Which resistance band is best for pull-aparts?
A light band for most people. Pull-aparts use small muscles at a long lever, so a band that feels easy for rows will feel heavy here. Adjust with grip width first: a narrower grip stretches the band more and makes it harder.
What can I do instead of band pull-aparts?
Bent-over band T's, band or dumbbell reverse flyes, and face pulls train the same muscles. A band reverse fly was compared directly with a dumbbell reverse fly in a 2018 study, and both worked the rear deltoid.
Do band pull-aparts fix posture?
There is no strong evidence that they do. Exercise programs can change head and shoulder angles in some studies, but the link between posture and pain is unresolved. Train pull-aparts for upper-back strength, and see a clinician for pain.
