Pushups do work parts of the back, but not in the way most people hope. The chest, front shoulders, and triceps handle the heavy lifting during a standard pushup, while several back muscles fire in a supporting capacity to keep the torso rigid and the shoulder blades moving properly. If you are looking for a single exercise that builds a thick, wide back, pushups are not it. But dismissing them as having zero back involvement misses what is actually happening behind your ribcage every time you press yourself off the floor.
Which Muscles Actually Do the Pushing
A pushup is a horizontal pressing movement. The pectoralis major (chest), anterior deltoid (front shoulder), and triceps brachii produce the force that drives your body away from the ground. These are the prime movers, and electromyography (EMG) studies consistently show them producing the highest levels of activation during the exercise. One study that compared multiple pushup variants recorded EMG from twelve muscles, including the pectoralis major (both sternal and clavicular heads), anterior deltoid, and both heads of the triceps, and these consistently dominated the activation profiles across variations.1PubMed Central. Selective Activation of Shoulder, Trunk, and Arm Muscles: A Comparative Analysis of Different Push-Up Variants That same study also recorded activity from the erector spinae, latissimus dorsi, trapezius, and other trunk muscles, confirming that these back muscles are active during pushups, just at lower amplitudes than the pushing muscles.
This distinction matters. “Active” is not the same as “trained hard enough to grow.” A muscle can fire at a low level to stabilize a joint or maintain posture without receiving enough mechanical tension to stimulate meaningful strength or size gains. So the honest answer is layered: yes, your back muscles are working during pushups, but for most of them the work is stabilization, not the kind of heavy contractile effort that builds noticeable muscle.
The Lower Back as a Stabilizer
Your lumbar erector spinae, the muscles running along either side of your lower spine, have to work throughout every pushup to prevent your hips from sagging toward the ground. In a standard floor pushup, this activation is moderate. Think of it like a plank: the erector spinae hold the spine in a neutral position against gravity, but they are not shortening and lengthening through a full range of motion the way a prime mover would.
The intensity of that stabilization demand changes dramatically with the surface you are pushing from. Research comparing floor pushups to suspended pushups found that the suspended device was the only condition that produced significantly higher lumbar erector spinae activation compared to the floor and other unstable surfaces.2PubMed Central. Muscle activation during push-ups performed under stable and unstable conditions A separate study confirmed this, reporting that suspended pushups using a pulley system produced the greatest erector spinae activation among all the conditions tested.3PubMed Central. Muscle Activation during Push-Ups with Different Suspension Training Systems The takeaway: if you want your pushups to challenge your lower back more, get your hands off the floor and onto straps or rings. Stable-surface pushups ask less of the spinal erectors because the ground does not move underneath you.
Upper Back and the Trapezius
The trapezius is a large diamond-shaped muscle covering the upper and mid back. It has three functional regions: upper fibers that shrug the shoulders, middle fibers that squeeze the shoulder blades together, and lower fibers that pull the shoulder blades down and in. During pushups, trapezius involvement is generally modest. A scoping review of shoulder EMG during pushup variations found that the upper trapezius demonstrated the lowest EMG amplitude in four of the six pushup types examined.4PubMed Central. Shoulder electromyography activity during push-up variations: a scoping review That is not zero activation, but it is consistently among the least-recruited muscles during the movement.
The lower trapezius tells a slightly different story. Research on narrow-base pushups found that lower trapezius activity increased significantly during the pushup phase compared to the pushup-plus phase (where you protract the shoulder blades at the top).5PubMed. Outcomes of the lower trapezius muscle activities during various narrow-base push-up exercises This makes sense mechanically: as you lower your body, the shoulder blades retract slightly and the lower trapezius helps control that movement. But the overall magnitude is still secondary compared to the chest and triceps.
Hand placement can nudge the numbers. A study comparing different hand positions found that narrow-grip pushups produced significantly higher upper trapezius activation than standard-width pushups.6PubMed Central. Effects of hand positions on neuromuscular control strategies in closed-kinetic-chain push-ups The narrow grip also boosted posterior deltoid involvement, a muscle on the back of the shoulder that people often lump in with “the back.”7PubMed. Comparison of muscle-activation patterns during the conventional push-up and perfect· pushup™ exercises So if you care about squeezing a bit more upper-back and rear-shoulder work from your pushups, bringing your hands closer together helps, though it is still a far cry from a rowing motion.
The Serratus Anterior, an Often-Overlooked Muscle
The serratus anterior wraps around the side of your ribcage and attaches to the inner border of your shoulder blade. Technically it sits more on the lateral torso than the “back,” but because its primary job is to protract the scapula (push it forward and around the ribcage) and hold it flat against the rib cage, it is deeply connected to upper-back function. Weak serratus anterior muscles are a common cause of scapular winging, a condition where the inner edge of the shoulder blade pokes out visibly.
Pushups are one of the best exercises for the serratus anterior, especially when you add the “plus” at the top, which means pushing your upper back toward the ceiling after your arms are straight. Research on unstable-surface pushups found that serratus anterior activation was significantly greater on oscillating unstable surfaces than on stable or static unstable surfaces.8PubMed Central. Serratus anterior muscle activation during knee push-up plus exercise performed on static stable, static unstable, and oscillating unstable surfaces in healthy subjects Floor pushups also showed lower serratus anterior activation than pushups performed with any unstable device.2PubMed Central. Muscle activation during push-ups performed under stable and unstable conditions
This has real clinical relevance. A study on patients with scapular dyskinesis (abnormal shoulder blade movement, including winging and tipping) found that a dual-wall pushup-plus protocol performed over two months led to measurable improvements: the dyskinesis test turned negative, and the position of the shoulder blade improved on multiple measurements.9PubMed Central. Effect of the dual-wall pushup plus exercise in patients with scapular dyskinesis with a winged or tipped scapula Physical therapists routinely prescribe pushup variations for scapular stability problems, making the pushup one of the few pressing exercises that therapists view as back-friendly rather than back-irrelevant.
What About the Lats?
The latissimus dorsi is the wide, fan-shaped muscle that gives the back its V-taper. It is primarily a pulling muscle: it extends the shoulder (bringing the arm down and back), adducts it (pulling it toward the body), and internally rotates it. During a pushup, the lats are in a mechanically poor position to contribute much force. EMG research that tracked lat activation during standard floor pushups found it was consistently low across conditions.1PubMed Central. Selective Activation of Shoulder, Trunk, and Arm Muscles: A Comparative Analysis of Different Push-Up Variants
Some fitness influencers claim that pushups “stretch” the lats under load or that wide-grip pushups target them. The lats do get a mild stretch at the bottom of a pushup if your chest is low enough, but being stretched is not the same as being loaded through a contraction. If lat development is a goal, pulling movements like rows, pulldowns, and pull-ups are in a different universe of effectiveness. Expecting pushups to build your lats is like expecting a bicep curl to build your triceps: the muscle is there, it is technically doing something, but the exercise is designed around its antagonist.
How Suspension Straps and Unstable Surfaces Change the Picture
A consistent theme in the research is that getting your hands off a stable floor increases back-muscle recruitment during pushups. Suspension trainers (like TRX straps) and rings force your stabilizer muscles to work harder because the surface or anchor points can move in multiple directions. This is true for the lumbar erectors, the serratus anterior, and to a lesser degree the upper trapezius.
An EMG analysis of TRX pushups at different body angles found that both TRX and stable-surface pushups produced greater anterior deltoid, triceps, upper trapezius, and serratus anterior activation at steeper angles (body more horizontal) than at shallower ones.10PubMed Central. Angle-specific upper body muscle activation in suspension push-ups: an electromyographic analysis across different body angles Steeper angles simply place more of your bodyweight through the exercise, so every muscle involved works harder. The practical implication is that if you are using a suspension trainer and you want more back involvement, you need to make the angle challenging, not just perform the pushup on straps at an easy incline.
That said, there is a ceiling to how much instability can shift a pushup from a chest exercise to a back exercise. Even with suspension devices, the primary movers remain the chest, front shoulders, and triceps. The back muscles fire harder to stabilize, but the fundamental movement pattern is still a press. You are raising the floor, not changing the building.
Spine Load and Explosive Variations
Some pushup variations load the spine more aggressively than others, which is worth knowing if you have a history of back pain. Research quantifying spine load during various pushup forms found that ballistic pushups (with hand movement, like clap pushups) required more muscle activation and produced higher spine compression than standard pushups. Placing labile balls under the hands only resulted in modest increases in spine load. The one-arm pushup produced the highest spine compression of any variant tested.11PubMed Central. Quantifying muscle patterns and spine load during various forms of the push-up
Higher spine compression is not automatically bad. It means the erector spinae and surrounding trunk muscles are working harder to protect the spine, which can be a useful training stimulus for people without back issues. But for someone recovering from a disc injury or dealing with chronic low-back pain, clapping pushups and one-arm variations might not be the best place to start. Standard floor pushups keep spinal loads moderate, and that is often the right call when the goal is gradual back-muscle conditioning rather than aggressive loading.
The same study found an interesting asymmetry effect during staggered-hand pushups: the rectus abdominis and external obliques switched which side was dominant depending on which hand was forward. This means offset pushup positions challenge the trunk’s anti-rotation muscles differently from standard pushups, providing another route to greater core and spinal stabilizer engagement without adding external load.
Why Pushups Cannot Replace Pulling Exercises
Your back has muscles that retract the shoulder blades, extend the spine, pull the arms down, and rotate the shoulders externally. Pushups primarily involve the muscles that do the opposite: they protract the shoulder blades, flex the shoulders, and push the arms forward. Even with the stabilization demands described above, a training program built entirely on pushups would leave significant gaps in back-muscle development and shoulder-joint balance.
The scoping review on shoulder EMG during pushups noted that while muscle groups like the rotator cuff, deltoid, and trunk stabilizers are important for upper-extremity rehabilitation, many did not meet inclusion criteria for the review because they were not consistently studied across all pushup positions.4PubMed Central. Shoulder electromyography activity during push-up variations: a scoping review The rotator cuff, a group of four small muscles critical for shoulder stability, does get some work during pushups, but the research base on how much is thinner than for the prime movers. Relying on pushups alone for rotator cuff health is a gamble.
From a practical standpoint, if you can only do bodyweight exercises, pairing your pushups with some form of row or pull-up is far more effective for back development than trying to engineer the perfect pushup variation. Inverted rows under a sturdy table, resistance-band rows, or a doorframe pull-up bar all directly load the mid-back, rear shoulders, and lats through a range of motion that no pushup variation replicates. Pushups give your back a supporting role; pulling exercises give it the lead.
Getting the Most Back Work From Your Pushups
If you understand the limitations and still want to bias your pushups toward more back involvement, the research points to a few practical adjustments:
- Add the plus: At the top of each rep, push your upper back toward the ceiling, letting your shoulder blades spread apart. This extra protraction heavily recruits the serratus anterior and has documented benefits for scapular stability.
- Use suspension straps: TRX or ring pushups increase lumbar erector spinae, upper trapezius, and serratus anterior activation compared to floor pushups, because your stabilizers have to fight to control the moving handles.
- Narrow your grip: Bringing the hands closer together increases upper trapezius and posterior deltoid involvement compared to standard or wide hand positions.
- Increase the angle: On suspension straps, a more horizontal body position loads every muscle harder, including the back stabilizers. On the floor, elevating your feet achieves a similar effect for the shoulders and trunk.
None of these adjustments turn a pushup into a back exercise. They turn a pushup into a slightly more whole-body pressing exercise that asks more of your stabilizers. The distinction is worth keeping clear, because overstating what pushups can do for the back leads people to skip the pulling work that actually builds it.
The Rotator Cuff Question
People with shoulder pain often wonder whether pushups are safe for the small muscles at the back of the shoulder. The infraspinatus and teres minor, two of the four rotator cuff muscles, sit on the back of the shoulder blade and externally rotate the arm. During a pushup, these muscles fire to help center the humeral head in the socket, especially during the lowering phase when the shoulder is under load in an extended position. The amount of activation varies with hand width and depth of the pushup, but the evidence base is sparse enough that researchers have flagged it as an area needing more study.
What is better established is that the pushup-plus movement pattern, because it promotes healthy scapular mechanics, can create a more stable platform for the rotator cuff to work from. Physical therapists frequently use wall pushup-plus progressions as an early-stage shoulder rehabilitation tool, precisely because the controlled protraction and retraction of the shoulder blades under light load trains the serratus anterior and lower trapezius without demanding aggressive rotator cuff loading. For someone whose “back of the shoulder” soreness comes from poor scapular control rather than a true rotator cuff tear, pushups can be part of the solution rather than the problem.