Why Your Shoulder Probably Isn’t “Getting Pinched” — And What’s Actually Causing the Pain
Volleyball is one of the most demanding sports on the human shoulder. Every spike, jump serve, block, and high set places massive stress on the joint at high speeds and high repetition counts. A competitive hitter may accumulate thousands of overhead swings over the course of a season.
So when shoulder pain shows up, many athletes are quickly told they have “shoulder impingement.”
It sounds serious.
It sounds structural.
It sounds like bone is grinding into tendon every time you swing.
But modern research suggests that explanation is outdated — and for volleyball players, believing it may actually make recovery harder.
Why Volleyball Players Develop Shoulder Pain
Research estimates that shoulder injuries affect up to 52% of volleyball athletes during their careers, making the shoulder one of the most overloaded joints in the sport.
The traditional explanation was simple:
- Your rotator cuff tendon gets “pinched” between the humerus and the acromion
- Repeated overhead movement irritates the tendon
- The tendon becomes inflamed and damaged over time
- Eventually the shoulder “wears down”
For years, this became the dominant explanation in sports medicine.
Players were told things like:
- “Your tendon is rubbing on bone.”
- “Every swing is wearing your shoulder down.”
- “You may need surgery to create more space.”
The problem?
We found out more information…and research says it was all a LIE!
What Shoulder Impingement Actually Means
Inside the shoulder is a space called the subacromial space. Important structures pass through this area, including:
- The rotator cuff tendons
- The biceps tendon
- The subacromial bursa
The old “impingement” theory suggested these tissues were mechanically compressed during overhead movement.
But newer imaging studies show something important:
Compression happens in almost everyone — including people with zero pain.
In fact, studies have shown that so-called “impingement” occurs in both painful and completely pain-free shoulders.
Even more surprising:
The highest levels of tissue contact often occur around 60 degrees of arm elevation, not during the fully overhead positions used in spiking or serving. 60 degress is below paralell or less than straight out to your side. Meaning th most compression of tissue happens when you don’t have pain and then when the actual “pinching” decreases the pain increases. This is the opposite of what we have been told.
This also means that tissue compression is often happening during normal daily movement — not just volleyball.
Compression itself is not automatically dangerous.
It’s simply part of how joints function.
The Research That Changed Everything
If shoulder impingement were truly caused by bone physically crushing tendon, then surgeries designed to “create more space” should work extremely well.
But they don’t.
Several major studies have now shown:
- Subacromial decompression surgery performs no better than placebo surgery
- Shaving bone off the acromion does not significantly improve outcomes
- Structured exercise therapy performs just as well as surgery in most cases
A 2019 Cochrane review — considered one of the highest levels of medical evidence — concluded that decompression surgery provides no clinically meaningful benefit for most patients diagnosed with shoulder impingement.
That completely changes the conversation for volleyball players.
Your shoulder pain is probably not because your anatomy is “wrong.”
Why The Diagnosis Can Actually Make Things Worse
This matters more than most athletes realize.
When volleyball players hear:
“Your shoulder is getting pinched every time you swing”
they often begin to fear movement itself.
That fear leads to:
- Avoiding overhead motion
- Stopping strength training
- Reducing practice unnecessarily
- Losing shoulder capacity
- Becoming even more sensitive to load
This is called fear-avoidance behavior, and it is strongly associated with worse long-term outcomes in musculoskeletal pain regardless of whether its your shoulder or your achilles.
The body becomes weaker, less resilient, and less prepared for the exact demands volleyball requires.
Your shoulder is not fragile.
It is highly adaptable.
But adaptation only happens when the joint is progressively loaded and trained appropriately.
Are Overhead Exercises Dangerous?
For years, volleyball players were told to avoid:
- Overhead pressing
- Internal rotation movements
- Certain shoulder strengthening exercises
The theory was that these movements would “close down the space” and increase impingement.
But again, modern research tells a different story.
Internal rotation is not harmful.
That matters because volleyball is built on explosive internal rotation:
- Spiking
- Serving
- Roll shots
- Arm swing acceleration
These are foundational movements of the sport.
Avoiding them entirely does not make you safer.
It makes you less prepared.
The goal is not avoidance.
The goal is increased capacity.
What’s Actually Causing Most Volleyball Shoulder Pain?
Most volleyball shoulder pain is not caused by a torn labrum, impingement, or some mysterious structural problem.
Most of the time, it comes down to a force absorption problem.
The shoulder is being asked to absorb and transfer more force than the system is currently prepared to handle.
That’s the real issue.
Volleyball is an extremely violent overhead sport. Every spike, serve, and block creates massive eccentric forces that have to be decelerated somewhere. The rotator cuff, scapular stabilizers, thoracic spine, trunk, and even the lower body all work together to absorb that force safely.
When the system loses its ability to absorb force efficiently, the shoulder starts taking stress it was never meant to handle alone.
That commonly happens during:
Sudden Volume Spikes
Di you take a summer off? Did you rest your shoulder because it started hurting? Anytime you go from low activity to hundreds of swings during tryouts, preseason, or club season you put your tissues at risk. The tissues simply have not adapted to the amount of force they are suddenly being asked to absorb.
Tournament Weekends
Six to eight matches over two days creates enormous accumulated overhead stress. Even if each swing is tolerable individually, the shoulder’s force absorption capacity gradually drops as fatigue builds. (this is why you should train for fatigue capacity)
New Skills or Higher Velocity Mechanics
Switching to a jump serve, float serve or learning cross-body swings can dramatically increases shoulder strain and eccentric deceleration demands in different angles. More velocity equals more force the body must control and force absorption is specific to each angle.
Poor Energy Transfer Through the Kinetic Chain
Limited thoracic mobility, weak scapular control, stiff hips, poor trunk rotation, or lower-body force deficits can all shift more stress into the shoulder. If force is not absorbed efficiently throughout the chain, the shoulder becomes the weak link. If you have a “weird” armswing, then don’t expect to not have to maintain your unique shoulder.
In many athletes, the problem is not that the shoulder tissue is damaged.
The problem is that workload, force production, and force absorption capacity are no longer matched.
That changes how rehab should work.
The goal is not just “rest” or band exercises.
The goal is rebuilding the body’s ability to absorb, transfer, and tolerate high-velocity overhead force again — because that is what volleyball actually demands.
The Overlooked Factors That Influence Shoulder Pain
The shoulder does not exist in isolation.
Recovery capacity is heavily influenced by:
- Sleep quality
- Nutrition
- Hydration
- Stress levels
- Overall strength and conditioning
A volleyball player sleeping five hours per night, under-eating, stressed about school, and playing all weekend is far more likely to develop shoulder pain.
Not because their shoulder is “impinging.”
Because their system is overloaded.
What Volleyball Players Should Actually Do
1. Activate the brain to “turn on” the right muscles
2. Load the shoulder (consult a doctor to do it safely)
3. Improve Recovery Inputs
Shoulder health is heavily influenced by recovery quality.
Focus on:
- 7–9 hours of sleep
- Adequate protein intake
- Proper hydration
- Stress management
- Consistent year-round strength training
Elite shoulder function is not just about rehab exercises.
It’s about total system capacity.
The Big Takeaway For Volleyball Players
The modern evidence suggests:
- “Shoulder impingement” is likely an outdated label
- Compression inside the shoulder is normal AND healthy
- Overhead movement is not inherently damaging
- Surgery is rarely necessary (and should be avoided as much as possible)
- Most volleyball shoulder pain is load-management related
- Strength and progressive loading are usually the solution — not avoidance
Your shoulder is designed to adapt.
But adaptation only happens when training, recovery, and workload are managed intelligently.
Final Thoughts
Volleyball places enormous demands on the shoulder.
But pain does not always mean damage.
In most cases, the answer is not fear, rest, or avoiding overhead movement forever.
The answer is building a shoulder that can tolerate the demands of the sport.
Train progressively.
Recover aggressively.
Build capacity.
Respect load.
And stop thinking of your shoulder as fragile.
Because it isn’t.
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