Every summer we see a wave of patients come in from Siesta Key, Longboat Key, and the local parks around Lakewood Ranch who did the same thing: went out on the water Saturday morning, had a great two hours, and by Sunday could barely get out of the car. The mechanism is predictable once you understand what paddling actually asks of your spine. Most people treat the soreness as a nuisance. Some of them are dealing with something that needs real attention.
If you find that water sports consistently leave your low back stiff or your shoulder aching, the answer is rarely "paddle less." Usually it is "paddle smarter" and get whatever is already irritated under control. Our back pain evaluation at Spine and Wellness Center regularly turns up disc pressure or joint dysfunction that made a patient's paddle sore far worse than it needed to be, often without the patient knowing it was there at all.
What paddling actually does to your spine
Most people think of kayaking and SUP as low-impact. In the sense that you are not landing on hard ground with each stride, yes. But "low-impact" does not mean "low load." Both sports ask the lumbar spine to hold a flexed or extended posture for sustained periods while the upper body rotates repeatedly against it. That combination is worth understanding.
In a sit-inside kayak, you typically hold a seated forward-lean with the legs extended, hips flexed, and the lumbar spine either flattened or rounded. Every stroke adds a rotational torque through the thoracic and lumbar segments. The hip flexors shorten during the session. By the time you get out, the low back is compressed and the muscles are fatigued in that fixed position. If you already have a disc that is under pressure, two hours of this can push it further in the wrong direction.
Stand-up paddleboarding changes the position (you are upright, which is better for the lumbar curve) but adds a balance demand. Your core and spinal stabilizers are constantly making micro-corrections to keep you on the board. That is a good workout, but if those stabilizers are weak or if one side fires differently than the other, the low back compensates. Many SUP athletes paddle with a strong side preference without realizing it, which creates asymmetric loading over time.
The shoulder and neck are taking on their own load. Every forward paddle stroke asks the shoulder to pull through a range that stresses the rotator cuff and the acromioclavicular joint. Forward head posture (common when focusing intently on balance or chop) puts the cervical spine in a position it was not designed to hold for extended periods. Two hours of paddling with a forward-tilted neck is two hours of sustained load on the posterior cervical muscles and disc segments.
The three most common injuries we see in paddlers
1. Low back muscle strain and lumbar disc irritation
The most common complaint. Muscle strain from sustained flexion and rotation typically feels like diffuse soreness in the lower back that peaks 24-48 hours after the session. It tends to ease with gentle movement and worsen with prolonged sitting.
Disc irritation is different. It often presents as a sharper, more localized pain, sometimes with radiation into the buttock or upper leg. If you notice leg tingling, numbness, or weakness alongside the back pain, that is a signal the disc may be pressing on a nerve root. That warrants an evaluation rather than a wait-and-see approach. Our spinal decompression program is designed specifically for disc-driven pain, and we routinely see paddlers who come in thinking they "pulled a muscle" and leave with a clearer picture of what is actually going on.
2. Rotator cuff strain and shoulder impingement
The paddle stroke loads the rotator cuff with every pull. If your stroke mechanics are off, if you grip the paddle too tightly, or if your rotator cuff is already compromised, the cumulative demand adds up fast. Typical presentation is anterior or lateral shoulder pain that worsens when you reach overhead or try to put on a seatbelt. Night pain that wakes you up is a red flag that the inflammation is significant.
We covered shoulder impingement and what drives it in an earlier post if you want the detailed breakdown. The short version: impingement from paddling is usually a combination of rotator cuff overload and cervical spine involvement, since the nerves that feed the shoulder originate in the neck.
3. Tech neck from paddling posture
This one surprises people. Forward head position during paddling loads the posterior cervical muscles, compresses the facet joints in the lower neck, and over time can aggravate existing disc issues between C5 and C7 (the segments most commonly involved in neck pain and arm symptoms). Headaches that start at the base of the skull after a paddle session are almost always cervical in origin. If you are also getting arm tingling or grip weakness, the cervical spine needs a look.
Why some paddlers hurt and others do not
This question comes up every time. Two people go out for the same two-hour session. One feels fine. One is in the office Monday morning. The difference is rarely fitness level. It is almost always structural status.
A disc that is already dehydrated or slightly bulging tolerates two hours of repetitive flexion and rotation differently than a healthy disc. A facet joint with early degenerative changes responds to sustained loading differently than an unaffected joint. A shoulder with a partial rotator cuff tear is not the same as a structurally intact one. The paddle session did not "cause" the problem in those patients. It revealed a problem that was already there, waiting for the right provocation.
In 23-plus years of practice, the clearest predictor of whether a patient recovers quickly or lingers is whether they address the underlying structural issue or just wait for the inflammation to settle. Rest quiets things down. It does not fix disc pressure, joint compression, or rotator cuff damage.
This is the piece that justifies getting evaluated even when the pain "isn't that bad." Many patients tell us they have had mild recurring post-paddle soreness for a season or two. When we look at what is actually there, we often find something that has been quietly progressing the whole time.
Before you get on the water: preparing your spine
A few practical things that consistently help:
- Warm up your rotation before you paddle. Seated thoracic rotations and cat-cow stretches for 5 minutes before you launch take the stiffness out of the segments that will be working hardest. Cold joints and cold discs handle load less well than warmed-up ones.
- Adjust your seat or board position for your body. In a kayak, a too-low seat back removes lumbar support at the worst possible time. Sit-on-top kayaks tend to be friendlier to the low back than sit-inside models for people with disc issues. On a SUP, stance width matters: feet too narrow makes balance work harder; too wide splays the hip and puts lateral stress on the lumbar spine.
- Paddle symmetrically and deliberately. Most recreational paddlers have a dominant side that takes longer strokes. Video yourself if you can. Asymmetric loading over two hours creates real cumulative stress.
- Use a paddle length that keeps your elbows at roughly 90 degrees at the catch. A paddle that is too long forces excessive shoulder elevation and trunk lean. Too short and you are hyperflexing forward on every stroke.
- Hydrate the day before, not just the morning of. Discs are mostly water. Chronic low-grade dehydration reduces their capacity to handle compressive load. In Florida's July heat, this matters.
After the paddle: what to do when you are sore
Most post-paddle soreness peaks at 24-48 hours (delayed onset muscle soreness, or DOMS). That is the muscle fatigue component. It is generally benign and eases on its own within 72 hours with gentle activity. What you are looking for is soreness that does not follow this pattern.
Signs that warrant a call to us rather than waiting:
- Pain that is worsening rather than plateauing by 48 hours
- Any radiation of pain into the leg or arm
- Tingling, numbness, or weakness in an extremity
- Pain that is dramatically worse with sitting than standing
- Sharp, localized pain (not generalized soreness) in the low back or neck
- Shoulder pain that disturbs sleep
For run-of-the-mill post-session soreness, heat is usually more helpful than ice at the 24-48 hour mark. Ice is better in the first few hours if there is acute swelling around a joint. Gentle walking keeps the discs hydrated and the spinal segments moving. Avoid prolonged rest in a fixed position, which is often exactly what people want to do but is counterproductive for disc-related discomfort. Our post on why your back hurts after rest covers the physiology of why movement usually wins.
When to see a chiropractor and what treatment looks like
If your symptoms fall into the "warning" list above, or if this is a pattern that repeats after every paddle session, it is time to understand what is actually driving it rather than manage each episode in isolation.
At Spine and Wellness Center, an evaluation for a water-sport athlete typically involves:
- A functional movement screen to see how your spine and hips are loading
- Orthopedic and neurological testing to determine whether disc, joint, or nerve root is the primary driver
- Review of your imaging if you have it (or referral for imaging if the clinical picture warrants it)
- A clear conversation about what we found and what the path forward looks like
Treatment depends on what we find. For disc-driven low back pain, spinal decompression combined with soft tissue work addresses the load in a way that rest alone cannot. For facet joint irritation, chiropractic adjustments to restore mobility in the affected segments are often the most direct path. For shoulder issues with a cervical component, we address both. Class IV laser therapy is useful for reducing soft tissue inflammation in the shoulder and posterior neck. These are not generic approaches: what we do is based on what the evaluation actually shows.
If you are dealing with nerve-related symptoms (leg tingling, arm numbness) that have been present for more than a few days, our sciatica and pinched nerve evaluations go deeper into the nerve root involvement and give you a clearer picture of the severity and timeline.
Getting back on the water
The goal is not to tell people to stop paddling. Kayaking and SUP are genuinely good for you: cardiovascular conditioning, outdoor time, low-impact movement, stress reduction. The goal is to make sure the spine you are putting in that kayak is in shape to handle what paddling asks of it, and to address things promptly when a session reveals they are not.
Many of our patients in the Lakewood Ranch, Bradenton, and Sarasota area paddle regularly and come in for periodic maintenance to keep their spine in the condition that lets them do it without paying for it the next morning. That is the practical version of what "spine wellness" actually means in this part of Florida.
If a recent paddle left you sore in a way that concerns you, call us at (727) 213-2982 or book online. We have same-week availability and a clear process for getting you answers quickly.
