Why Your Shoulders Hurt After Kayaking — and the Mobility Fix

If your shoulders ache the day after a long paddle, you're not alone — and you're not doomed to it. Shoulder soreness is one of the most common complaints kayakers bring to coaching, and it almost always traces back to the same handful of fixable causes.

Why it happens

The kayak stroke is a rotation-driven movement. Research on sprint kayaking shows that trunk rotation and the abdominal muscles are major contributors to stroke power — the engine is meant to be your torso, not your arms (Brown et al., 2023). When the mid-back (thoracic spine) is stiff, that rotation has nowhere to go, and the shoulder is forced to do work it was never designed for. Add hours in a slightly hunched seated position and thousands of repetitions per outing, and you get the familiar next-day ache. In fact, a 2025 randomized controlled trial found that improving thoracic spine mobility meaningfully reduced shoulder pain and improved shoulder function (Calik et al., 2025).

The fix: mobility, not just rest

Rest makes the pain go away temporarily, but it comes back the next time you paddle. Restoring rotation and shoulder control is what breaks the cycle:

• Thoracic rotation drills — free the mid-back so your torso drives the stroke.

• Shoulder controlled articular rotations (CARs) — restore full, pain-free range.

• Chest and lat openers — undo the forward-rounded position a long paddle builds up.

• Scapular control work — teach the shoulder blade to stabilize so the cuff isn't overloaded.

A simple before-and-after routine

Before you launch: 60 seconds of thoracic rotations each side, 10 slow shoulder CARs per arm, and a doorway chest stretch. After you land: repeat the chest opener and add a gentle lat stretch. Five minutes total.

When to get it checked

Mobility work resolves the everyday post-paddle ache. Sharp, pinching, or persistent pain that doesn't ease with movement is worth having assessed by a professional.

Train the fix in 21 days

The 21-Day Shoulder Mobility Program walks you through these movements in a follow-along format built for paddlers, created by a certified strength & conditioning and functional movement coach. It's part of the Mobility pillar, our head-to-toe system for paddling longer with less soreness.

Evidence-informed guidance, not a substitute for individual medical advice.

References

Brown, M. B., Peters, R., & Lauder, M. A. (2023). Contribution of trunk rotation and abdominal muscles to sprint kayak performance. Journal of Human Kinetics. Advance online publication. https://doi.org/10.5114/jhk/169939

Calik, M., Kara, D., Terzi, M. M., Bezirgan, U., Misirli, S., Kaya Utlu, D., & Duzgun, I. (2025). Effect of thoracic mobilization on acromio-humeral distance, thoracic kyphosis angle, pain and shoulder function in patients with subacromial impingement syndrome: A randomized controlled trial. European Spine Journal, 35(2), 354–367. https://doi.org/10.1007/s00586-025-09144-w