Gym shoulder: why chest pressing is one of the biggest causes of shoulder pain in men and how to fix it!
- May 6
- 8 min read
In our last two posts, we explored shoulder pain in midlife women driven by hormonal changes, and postural pain caused by prolonged desk work. Today we're looking at a different, but equally common picture: the man in his 30s, 40s or 50s who has been training consistently for years, whose program is heavily weighted toward chest and pressing work, and whose shoulder has finally had enough.
If you train at a gym, there is a very high chance that bench press or one of its variations features prominently in your program. The bench press is arguably the most popular exercise in the gym. It builds chest, shoulder and tricep strength effectively, and for many men it's a core measure of upper body power and progress. The problem is that when it's programmed too aggressively, performed with poor mechanics, or combined with a training approach that is imbalanced toward pressing over pulling, the shoulder pays the price.
Here's what's going on, and what physiotherapy can do about it.
Why the bench press is hard on shoulders
Unless there has been a serious acute injury, the cause of shoulder pain from gym training is almost always overload of one of the structures of the shoulder due to poor form, muscle imbalances such as weakness or poor activation patterns, or overzealous progression of the training programme.
The shoulder joint is the most mobile joint in the body it can move in nearly every direction. That mobility is what allows you to press, pull, throw and reach. But it comes at the cost of stability, which depends almost entirely on the surrounding muscles and soft tissues doing their job correctly. When they can't keep up with the load being placed on them, things break down.
The bench press places significant and repetitive compressive and shear forces through several key structures: the rotator cuff tendons, the acromioclavicular (AC) joint, the biceps tendon and the shoulder capsule. In a well-structured programme with good technique, these structures can handle these loads. But when volume is high, technique is compromised, or the supporting muscles are weak relative to the primary movers, the shoulder accumulates damage faster than it can repair itself.
The most common conditions caused by gym overloading
1. Rotator cuff-related shoulder pain
This is the most common presentation we see. Shoulder pain after bench pressing is often caused by poor technique, muscle imbalances, or overloading the joint. Common issues include flared elbows, excessive range of motion, weak stabilising muscles, or tight chest and shoulder structures all of which can place extra stress on the front of the shoulder.
The rotator cuff is a group of four muscles that stabilise the humeral head (the ball) within the shoulder socket during movement. When you press with your elbows too wide, your shoulders rounded forward, or your grip too wide, the rotator cuff is forced to work in a compromised position under heavy load. Over time this leads to tendon irritation, inflammation and pain typically felt at the front or outer side of the shoulder, often worsening when raising the arm or reaching behind the back.
A common mistake seen in patients is that training programmes are often biased toward large muscle groups the pectorals and deltoids, while smaller stabilising muscles like the rotator cuff and lower trapezius are neglected. This leads to instability in the shoulder and increases the risk of injury and pain.
2. Weightlifter's shoulder - distal clavicular osteolysis (DCO)
This is a condition that doesn't get talked about enough, and it's one of the most specific gym-related shoulder injuries we see in men who train hard.
Distal clavicle osteolysis is a condition that often affects young male weightlifters. Repetitive overloading of the clavicle from exercises such as bench presses, push-ups and chest flies causes micro-trauma to the end of the clavicle, resulting in pain and inflammation in the bone.
In plain language: the AC joint, where the collarbone meets the top of the shoulder blade, is a very small joint, and in weightlifters a significant amount of stress passes through it with every pressing session. Over time, this repetitive stress causes the end of the clavicle to break down faster than the body can repair it.
A typical presentation features the gradual onset of dull aching pain over the distal clavicle and AC joint. Pain worsens during bench pressing, hang cleans and overhead pressing, and typically improves with rest, only to return when training resumes.
If you have pain specifically on the top of your shoulder, not the front or the side, but on the bony prominence at the top, this is worth getting assessed. Many men assume it is a rotator cuff issue and train through it, which allows the bone to continue deteriorating.
3. AC joint sprain and arthritis
The acromioclavicular joint can also be injured acutely (from a fall or direct blow) or develop degenerative arthritis from years of accumulated pressing load. AC joint pain is typically felt at the very top of the shoulder and is often reproduced by bringing the arm across the body a movement called horizontal adduction, which is essentially the end range of a chest fly.
4. Pectoral muscle strain
Injuries to the pectoralis major muscles are common from overloading during bench pressing. Signs and symptoms include pain in the arm and shoulder, tenderness or weakness, unusual crackling or grinding noises, and discomfort when sleeping on the shoulder or exercising through full range of motion.
Pec strains tend to occur when too much load is applied too quickly or when the bar is lowered too far below the chest, placing the pec under maximum stretch under maximum load. A partial pec tear is painful and frustrating; a full thickness tear is a surgical emergency.
Why chest-dominant training creates the perfect storm
The gym culture around bench press creates a very specific pattern of muscle imbalance that sets men up for shoulder problems. Most gym programmes include significantly more horizontal pressing volume (bench press, incline press, cable flies) than horizontal pulling (rows, face pulls, rear delt work). Over months and years, this creates:
A tight, shortened chest and anterior shoulder, pulling the humeral head forward and out of its optimal position in the socket.
Weak posterior rotator cuff, lower trapezius and rhomboids, meaning the muscles designed to counterbalance the chest and hold the shoulder blade in the right position are understrength relative to the load being pushed.
A strong chest with a weak back is a recipe for shoulder issues. Your shoulder blades need to move and stabilise properly to support healthy shoulder mechanics. Poor scapular control can lead to compensation and uneven pressure across the shoulder joint.
The irony is that the harder someone trains chest without addressing this imbalance, the more unstable and vulnerable their shoulder becomes, even as their pressing strength increases.
Technique errors that load the shoulder badly
Your physio or EP will assess your technique as part of the rehabilitation process, but the most common errors that drive shoulder pain in the bench press are:
Elbows flared too wide. Many lifters flare their elbows out too wide during the bench press, placing excessive stress on the anterior shoulder and the biceps tendon. Ideally, the elbows should be tucked at a 45–75 degree angle relative to the torso.
Grip too wide. A grip that is too wide increases stress on the shoulders. Grip width should be no wider than one and a half times shoulder width.
Bar lowered too deep. Dropping the bar to the lower chest or sternum with a wide grip takes the shoulder into extreme extension under load, exactly the position in which the AC joint and rotator cuff are most vulnerable.
Shoulders rolled forward. If the shoulders are rounded forward during bench press they will be more internally rotated, causing impingement or excessive stress on the rotator cuff muscles. To prevent this, pull the shoulders back by squeezing the shoulder blades together and press at mid-chest level.
Progressive overload without progressive recovery. Overtraining without sufficient recovery leads to muscular fatigue, which alters shoulder biomechanics and increases injury risk. Balanced programming and technique monitoring are essential.
How We can help
The good news is that the vast majority of gym-related shoulder pain responds very well to physiotherapy, including the more serious presentations like distal clavicular osteolysis, when addressed early. The goal is never simply to stop you training. It's to get you back to training better, heavier and more sustainably than before.
At Colab Health Group, your Physiotherapy and Exercise Physiology (EP) assessment will look at the full picture: where the pain is, what structures are involved, how your shoulder is moving, what your technique looks like and what your training programme includes.
Treatment typically involves:
Hands-on manual therapy — joint mobilisation, soft tissue release and trigger point work to reduce pain, restore shoulder mobility and release the tightness in the chest, anterior shoulder and upper trapezius that is pulling the joint out of alignment.
Rotator cuff and scapular stabiliser strengthening — this is the core of rehabilitation for almost every gym-related shoulder condition. Your physio will prescribe a targeted programme to rebuild the posterior rotator cuff, lower trapezius and serratus anterior — the muscles that hold the shoulder blade correctly and allow the rotator cuff to do its job under load.
Load and volume management — your physio or EP will work with you on how to modify your training during rehabilitation, rather than stopping altogether. You don't have to stop weight training completely. You should be able to perform certain exercises that are less provocative while the shoulder heals — such as decline flies and machine chest press variations.
Technique correction — once the acute pain is under control, your EP can assess your pressing mechanics and give you specific cues to reduce shoulder load. Simple adjustments such as narrowing your grip, adjusting elbow angle, shortening range of motion temporarily can make a significant difference to how your shoulder tolerates load.
Programme rebalancing — the most important long-term change for most men with gym shoulder pain is rebalancing the ratio of pressing to pulling in their programme. The ratio of exercises done for the chest and anterior shoulder is often much less than what your Physio or EP will prescribe for your back and posterior shoulder. Proper technique is also paramount, good form must be established before returning to heavy weights.
When to come in
Don't wait until the pain is so severe that you can't train at all. The earlier shoulder pain is assessed, the easier and faster it is to resolve. Come and see us if:
You feel shoulder pain during or after bench press, overhead press or chest flies
You have pain on the top of your shoulder that worsens when you train and eases when you rest
You've had to reduce your training load because of shoulder discomfort
Your shoulder clicks, catches or feels unstable under load
You've been managing the pain with anti-inflammatories for more than two to three weeks
As we discussed in our previous post on shoulder pain, the shoulder is a joint that rewards early intervention. The longer overload injuries are left untreated, the more the surrounding structures compensate — creating secondary problems that are more complex and time-consuming to resolve.
The goal: train harder, not just differently
At Colab Health Group in Balwyn, we work with active people every day. We understand that telling someone to stop training isn't a solution it's a last resort. Our goal is to identify exactly what is driving your shoulder pain, address it properly, and get you back to the gym with better mechanics, better balance in your programme, and a shoulder that's resilient enough to handle years of training ahead.
References:
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