Swimmer’s shoulder: modify the load, don’t just chase random exercises
When a swimmer’s shoulder flares up, my first question is not, “Which new exercise should we add?” It is, “What has changed in the demands on this shoulder—and what can we adjust while the athlete keeps training?”
The workload can be substantial. In one study of elite British swimmers, sprinters averaged about 43 km in the water per week, while distance swimmers averaged about 58 km. But volume alone doesn’t tell us why an individual shoulder hurts, and “swimmer’s shoulder” is not automatically a tendon diagnosis. Rotator cuff tendinopathy is one possibility; other shoulder problems need to be considered too.
I sometimes think of my role as a panel beater, but not because swimming inevitably damages an athlete. My job is to find where the current demands exceed what their shoulder can tolerate, then help them build that tolerance back up. That starts with a conversation with the head coach. Could we temporarily change the volume, intensity, stroke mix, or equipment used in a set? Could we adjust gym work that currently provokes symptoms? Modify before you miss is a useful principle—not a rule that an athlete must swim through every kind of pain. Research links swim-training volume with shoulder pain particularly in adolescent swimmers, but it does not establish one safe weekly cutoff for everyone.
Strength work still matters. The underwater pull involves shoulder internal rotation, so external-rotation work may be useful when assessment shows a relevant weakness or endurance deficit. But rehabilitation is not simply “do the opposite of swimming.” I’m interested in the swimmer’s overall shoulder capacity, including the rotator cuff and muscles around the shoulder blade, and in how they respond to the work we prescribe. A review of swimmer-specific risk factors identifies shoulder strength-endurance as a particularly relevant, potentially modifiable factor.
For a suspected rotator cuff tendon flare, I don’t see the choice as “load it as heavily as possible” versus “rest until it is painless.” I aim for a tolerable level of swimming and progressive strength work, then build toward normal training while checking how the shoulder responds during sessions and afterward. Temporarily changing painful overhead gym exercises can help, but the goal is to restore the ability to do them where the sport requires it. Current clinical guidance supports active rehabilitation with resistance or motor-control exercises at various loads, tailored to the athlete’s capacity and return-to-sport demands.
Where do isometrics fit? They let us apply controlled force through the muscle–tendon unit while holding the joint relatively still. That can make them a practical way to load a sensitive shoulder in a tolerable position. Some athletes get short-term pain relief; others do not. The aim is to keep the swimmer involved where it is sensible, make the training load manageable, and rebuild the capacity they need to swim well—not to collect a thousand exercises.