It is seven in the evening. You did your physical therapy session this morning, you felt fine walking out, and now the shoulder is throbbing. You are lying there running the same question on a loop. Did that help me, or did I just make it worse?
Almost everyone in physical therapy asks this at some point. It is a fair question, and it deserves a real answer rather than a pat on the head.
Here is the honest version. Some hurt after a session is expected, normal, and not a sign that anything went wrong. Some hurt is a warning and should change what happens next. They feel different, and you can learn to tell them apart tonight.
One more thing worth saying up front, because it is the part people get wrong most often. Quitting on ordinary soreness is one of the most common ways a perfectly good plan falls apart. People feel sore, decide therapy is not for them, and stop. The plan never gets the chance to work, and nobody ever finds out that a small change to the load would have fixed the soreness.
This guide gives you three things. A short list of symptoms that mean stop and get care now. A plain way to sort ordinary soreness from a real flare. And a script for what to tell your therapist, because that conversation is the single most useful thing you can do.
Read this part before the reassuring part. Most post-therapy aches are harmless. A few are not, and those few are the reason to start here.
Do not wait for your next appointment if any of the following happen.
These are not emergencies, but they should not wait a week.
If you told your therapist about any of this and it was brushed aside, that is worth pushing on. In Oregon, a physical therapist is legally required to act. Under state law, a licensed physical therapist "shall immediately refer" a patient to a physician when the patient has symptoms that need medical diagnosis or treatment, symptoms for which physical therapy is not appropriate, or symptoms outside what physical therapy can treat.
Everything below this line assumes you have read the list above and none of it applies. Good. Now let us sort the ordinary from the concerning.
There are broadly two things people mean when they say physical therapy made them hurt more.
This is the ache you get from doing something your body has not done in a while. It is well studied. Researchers call it delayed onset muscle soreness.
What it feels like:
A 2018 review describes the clinical signs as "reduced force capacities, increased painful restriction of movement, stiffness, swelling, and dysfunction of adjacent joints." That is the technical way of saying: it aches, it feels tight, and the muscle is weaker than usual for a few days.
The timing is the giveaway. Soreness of this kind is delayed. A 2026 review states it typically develops 24 to 72 hours after "unaccustomed or intense eccentric exercise." The 2018 review puts peak soreness at 48 to 72 hours after exercise. So the worst day is often not the day of the session, and not even the next day.
What brings it on is not mysterious either. A long-running review in Sports Medicine describes it as most common when people return to training after a period of reduced activity, and "when athletes are first introduced to certain types of activities." That review studied athletes, but the mechanism is the same one your first week of therapy sets off. New movement, unfamiliar muscles, predictable ache.
One useful and slightly odd detail from that same review: "Exercise is the most effective means of alleviating pain during DOMS, however the analgesic effect is also temporary." Gentle movement really does take the edge off. That is why a short walk usually helps and lying still usually does not.
This is different, and it is the one worth reporting.
A flare is your original pain turned up. Not a new ache in a new place. The same shoulder, the same knee, the same back, behaving worse than it was before the session.
What it tends to feel like:
That last one matters most. New symptoms are a different category from more of the old symptom.
Sit with this for two minutes. Answer honestly, and write the answers down so you can read them to your therapist.
1. Where is it? Across a muscle, or inside the joint?
2. What does it feel like? Dull and achy, or sharp, catching, burning, or electric?
3. When did it start? Within the session, a few hours after, or the next day?
4. Is it above your usual baseline? Not "does it hurt" but "does it hurt more than a normal bad day did last week?"
5. Is it settling by the next morning? This is the most useful question of the five.
Here is how the answers sort out.
| What you are noticing | Most likely | What to do |
|---|---|---|
| Dull ache across a muscle, started the day after, eases as you move, gone or fading by the second morning | Ordinary exercise soreness | Keep going. Mention it at your next visit. |
| Muscle ache, but strong enough that you are limping or avoiding stairs | Too much load, too soon | Do the exercises, call and say so before the next session. |
| Your original joint pain, worse than baseline, still there the next morning | A flare of the underlying problem | Call your therapist today. Ask for the plan to be adjusted. |
| Same or worse after three sessions in a row, with no better days in between | The plan needs a rethink | Ask for a reassessment. |
| New pain running down an arm or a leg, or new numbness, tingling, or weakness | A nerve symptom, not muscle soreness | Call today. Do not wait for the next visit. |
| Anything on the emergency list above | Not a therapy question | Urgent care or 911. |
This is a sorting tool, not a diagnosis. A clear answer on one row does not rule out the others, and only an in-person exam can do that properly.
This part surprises people, so it is worth setting out carefully, including the parts that do not support the headline.
In 2017 a team led by Benjamin Smith published a systematic review and meta-analysis in the British Journal of Sports Medicine. They asked a blunt question: should exercises be painful when treating chronic musculoskeletal pain?
They found nine papers from seven trials, covering 385 participants. In the short term, exercise protocols that allowed pain did slightly better on pain than pain-free protocols. The effect size was small, minus 0.27, with a confidence interval from minus 0.54 to minus 0.05, on moderate quality evidence.
Now the part that matters just as much. In the same review, "for pain in the medium and long term, and function and disability in the short, medium and long term, there was no significant difference." Painful exercise was not better for function at any point. It was not better for pain past the short term.
So the fair reading is narrow, and the authors put it plainly: "Pain during therapeutic exercise for chronic musculoskeletal pain need not be a barrier to successful outcomes."
That is not a license to push through anything. It is permission to stop reading every ache as damage.
The review has real limits and the authors name them. One reviewer screened titles and abstracts. Trials involving widespread pain conditions such as fibromyalgia were excluded. And, tellingly, "none of the trials included in this review recorded the level of pain patients actually experienced during their exercise programme." Seven trials is a small evidence base for a big idea.
If pain during exercise is allowed, where is the line?
The trials in that review used several different rules. The review lists them:
The third version is the one most commonly quoted in clinics, and here is the published wording of it: "pain levels should not exceed a 5/10 on the numeric pain rating scale during or immediately after activity", and "pain ratings should return to pre-activity levels by the following morning."
That is the pain-monitoring model. It is worth knowing where it came from, because the origin sets the limits of the rule.
It was originally described by Thomee and colleagues for knee-cap pain, then adapted for Achilles tendon problems. The trial that made it well known was published in 2007 by Karin Silbernagel and colleagues in the American Journal of Sports Medicine.
Thirty-eight patients with Achilles tendinopathy were randomized. One group kept running and jumping under the pain-monitoring rule. The other rested for six weeks. Both groups did the same rehabilitation exercises.
The result: no significant difference between them. Both improved substantially at twelve months. Continuing to load the tendon under a pain rule did no harm.
Read that scope carefully. Those were athletes with a tendon problem, not adults over 50 with an arthritic knee or a stiff shoulder. The rule is borrowed and adapted, not proven in our age group. Your therapist may set your ceiling lower, or differently, and that is a clinical judgment about you, not a failure to follow a rule.
The largest review on strength training in older adults is a Cochrane review by Chiung-ju Liu and Nancy Latham, covering 121 trials and 6,700 participants.
On safety it says two things that belong together. "Adverse events were poorly recorded but adverse events related to musculoskeletal complaints, such as joint pain and muscle soreness, were reported in many of the studies." And: "Serious adverse events were rare, and no serious events were reported to be directly related to the exercise programme."
The "poorly recorded" part is not a footnote. It means the evidence on harms is weaker than the evidence on benefits, and honest reporting says so.
The benefits in that review were substantial, including a moderate to large effect on getting out of a chair. So the trade is a real one: aching muscles are common, serious harm is rare, and the payoff is the thing you actually want back.
If your therapy is for an arthritic knee or hip, there is guideline language written for exactly your situation.
The UK's National Institute for Health and Care Excellence publishes a guideline on osteoarthritis in people aged 16 and over. It is a British guideline about arthritis specifically, not about all pain after therapy, so read it in that frame.
Recommendation 1.3.3 says clinicians should "advise people with osteoarthritis that joint pain may increase when they start therapeutic exercise." It then asks them to explain that "doing regular and consistent exercise, even though this may initially cause pain or discomfort, will be beneficial for their joints," and that "long-term adherence to an exercise plan increases its benefits by reducing pain and increasing functioning and quality of life."
In other words, a sore arthritic knee in week one is an anticipated part of the process, and the guideline expects your clinician to have warned you about it.
The general rules are useful. The specifics are more useful. Here is how this plays out where people ask about it most.
The shoulder generates more of these questions than anywhere else, and for a good reason: shoulder rehabilitation involves loading tissue that is usually already irritable.
Probably ordinary soreness. An ache across the back or side of the shoulder and into the upper arm muscle, the day after a session with bands or weights. It is tender to press, a bit stiff first thing, and easier once you have moved around. It is fading by the second morning.
Report it today. Night pain that is clearly worse than it was before you started. A new catch or pinch at a specific point in the arc as you lift. Pain that now runs below the elbow, or pins and needles into the hand. Losing motion you previously had.
That last one is the important one. A shoulder that is more painful for a day or two is common. A shoulder that can reach noticeably less far than it could last week is a different conversation.
If you are still working out what is wrong with your shoulder in the first place, we have a separate piece on why you may not be able to lift your arm overhead after 50 that walks through the four common causes and how they differ.
This is the group the arthritis guideline was written for, and the soreness pattern is fairly predictable.
Probably ordinary. Aching thigh and buttock muscles after squats, step-ups, or bridges. A knee that feels warm and a bit puffy the evening after a session, then settles overnight. Stiffness getting out of a chair that loosens within a few minutes of walking.
Report it today. A joint that swells noticeably and stays swollen for days. A knee that gives way or locks. Pain that has climbed above your baseline and stayed there across three sessions. Being unable to put weight through the leg.
The guideline expects some increase in joint pain when exercise starts. It does not expect the joint to get steadily worse week after week. Direction of travel is what your therapist needs to know.
This is the one where the distinction is sharpest and most important.
Probably ordinary. Sore, tired back or neck muscles either side of the spine after a session. Stiffness in the morning that eases as you move. The same familiar ache, maybe a little louder for a day.
Report it today, or sooner. Pain that has started traveling into a buttock, down a leg, into the shoulder blade, or down an arm, when it was not doing that before. New numbness, tingling, or weakness. Anything on the cauda equina list at the top of this article, which is an emergency and not a phone call.
The general principle: sore back muscles are one thing. A new symptom in a limb is a different thing, and it goes to the front of the queue.
If your care started after a scan, it is worth reading what those scan reports actually mean, because a great deal of unnecessary worry comes from the wording. We cover it in what a bulging disc on your MRI really means.
This is the highest-value thing in this article, so here it is as a script.
At your next visit, or on the phone today if it is on the "call today" list, say something close to this:
"I was sore after Tuesday. It was about a six out of ten at its worst, it started the evening of the session, and it was still there two mornings later. It felt like my usual shoulder pain rather than a muscle ache. I also carried some heavy groceries on Wednesday."
That is four pieces of information, and every one of them changes what a therapist does next.
Then here is the part people do not realize they are allowed to say: "Can we adjust the load?"
Load is a dial, not a switch. Sets, repetitions, weight, range, speed, how often, how much rest between days. A therapist can turn any of those down without abandoning the plan. That is not failure. That is the plan working the way it is designed to work.
A good plan expects to be adjusted. The soreness report is the information that lets it be adjusted. Without it, your therapist is guessing.
Worth being even-handed here, because it saves a lot of frustration.
Sometimes the load was genuinely too much. New exercise, an ambitious first week, an irritable joint. That is a dial to turn down, and your therapist will turn it.
But often the cause is outside the clinic entirely. Common ones:
None of these mean you did something wrong. They mean the picture is bigger than the exercise sheet, and your therapist can only account for what they know about.
If the soreness worries you, work through these in order. The order matters.
Step one: tell your therapist. First, and the same day if it is on the call-today list. Not after four more sessions, and not after you have decided to quit. Soreness is information they need in order to set the load correctly, and there is no version of this where they would rather not hear it.
Step two: ask for the plan to be adjusted, or for a reassessment. If you have reported it and nothing has changed after a session or two, ask directly. "This is still above where I started. Can we reassess?" Reassessment is a normal part of care, not a complaint.
Step three: seek another opinion. Last, and only if the first two steps have not resolved it. If you have reported the problem clearly, asked for a reassessment, and things are still heading the wrong way, a second opinion is a reasonable next move. Most people never need this step.
If what you are really asking is not "am I sore" but "is any of this working at all", that is a separate and equally fair question. We wrote a full guide to judging whether your physical therapy is working at week two, four, and six, including what to measure and what to say if the answer is no.
If your mother or father has told you that physical therapy "made it worse", you are probably trying to work out whether to encourage them to keep going or help them stop. Here is how to be useful in that conversation.
Ask the five questions from the check above. Especially these two: was it the same pain you already had, or a different ache? And was it better by the next morning?
Ask whether they have told the therapist. Very often the answer is no. People do not want to be difficult, or they assume soreness is expected and not worth raising. It is worth raising every single time.
Listen for the emergency words. Loss of bladder or bowel control, new numbness between the legs, spreading weakness, a swollen and warm calf, fever with redness around a surgical wound, a fall. Those change the conversation immediately.
Try not to solve it by suggesting they stop. That is the instinct, and it is the thing most likely to end a plan that was working. Offer to come to the next appointment instead, or to help them make the phone call.
If they are new to all of this and nervous about the process itself, what to expect at a first physical therapy visit after 50 covers the practical side.
Dr. Raj Pusuluri, PT, DPT, works almost entirely with adults over 50, and soreness after a session is one of the most common things patients raise. So the approach is built around expecting it rather than being surprised by it.
Load is set deliberately and rechecked every visit. You get told at the start what is likely to be sore, roughly for how long, and what would count as too much. That conversation happens before the first set, not after the phone call.
Soreness reports change the plan. Every visit starts by asking what happened after the last one. If the answer is "sore for three days and it was my knee pain, not a muscle ache", the load comes down that day.
If you are unsure between visits, you can check in without driving anywhere. Our "Start From Home" virtual option exists for exactly this. A short video call to describe what you are feeling is usually enough to sort an ordinary ache from something that needs looking at in person.
On our Neubie device, and being straight about it. The Neubie is an FDA-cleared direct current device, distinct from a TENS unit, and used in clinic only. Its cleared uses include neuromuscular re-education, range of motion, local blood circulation, preventing atrophy, reducing spasms, and managing chronic and post-surgical pain. It is not the answer to ordinary soreness after exercise, and we do not offer it as one.
That is the honest position on electrical devices and soreness generally. The 2003 soreness review found that "cryotherapy, stretching, homeopathy, ultrasound and electrical current modalities have demonstrated no effect on the alleviation of muscle soreness." Worth knowing, whoever is treating you.
We are direct-pay, no insurance required, and if you want a sense of how long a course of care usually runs, we have written about how many physical therapy sessions people typically need.
For ordinary muscle soreness, no. Keep going, and tell your therapist at the next visit so the load can be set properly. Gentle movement usually helps; the soreness review found exercise is the most effective way of easing that kind of pain, although the relief is temporary.
Pause and call if it is the pain you came in with rather than a muscle ache, if it is above your baseline the next morning, if it is getting worse session after session, or if anything new has appeared such as numbness, tingling, or weakness. Stop and seek urgent care for anything on the emergency list near the top of this article.
Do not stop a prescribed exercise permanently on the strength of an article. Use this to decide what to tell your therapist and how quickly.
Ordinary muscle soreness is delayed and then fades. Research puts development at 24 to 72 hours after unaccustomed exercise, with peak soreness around 48 to 72 hours, easing over the days after that.
A widely used clinical rule of thumb is that pain should stay at or below about 5 out of 10 during and right after exercise, and be back to your usual level by the next morning. That rule comes from tendon research in athletes, so treat it as a guide rather than a law, and let your therapist set your own number.
If soreness is still above your baseline several days later, or it is a little worse after each session rather than a little better, that is your cue to call.
No. There is no evidence that a harder session produces a better result.
The best study on this found allowing pain during exercise gave only a small short-term advantage on pain, and no advantage at all for function or disability at any time point. Sessions that leave you wrecked are not a badge of progress.
A shoulder can be achier at night for a day or two after a session that loaded it. That is common.
Night pain that is clearly worse than before you started therapy, and stays worse, is worth a call. So is losing range you previously had. Both should prompt a reassessment rather than more of the same.
Sore back muscles after an exercise session are common and are not the same thing as a worsening disc.
The signal to act on is a change in your leg symptoms. New or increased pain, numbness, tingling, or weakness traveling down a leg means call your therapist the same day. Loss of bladder or bowel control, or new numbness between the legs, is an emergency and needs immediate care, not a phone call.
Ask directly for a reassessment, using specific words: "My pain is still above where I started, and it is not settling by the next morning. Can we reassess the plan?"
Reassessment is a routine part of care. If you have asked plainly, given it a session or two, and things are still moving the wrong way, then a second opinion is reasonable. That is the last step, not the first.
No. The largest review of strength training in older adults covered 121 trials and 6,700 participants, and found that joint pain and muscle soreness were reported in many of those studies while serious adverse events were rare and none were attributed to the exercise programs themselves.
Aching muscles in your sixties or seventies mean your muscles did some work. They do not mean your body has stopped being able to adapt.
If you are sore, unsure, and tired of guessing, a short conversation solves it faster than another week of wondering.
You can book a Wellness Video Call with Dr. Raj from home. Describe what you are feeling, when it started, and whether it is settling, and you will get a straight answer about whether it needs an in-person look.
Book a Wellness Video Call: Schedule online
Or call us: (971) 202-1979
HWY Physical Therapy 2615 Portland Rd NE, Salem, OR 97301 (at Center 50+) Phone: (971) 202-1979 Walk-ins welcome
HWY Physical Therapy Clinic South Salem 180 Ramsgate Square S, Salem, OR 97302 Phone: (971) 202-1979 By appointment only
Hours for both locations: Monday to Friday, 8:00 AM to 5:00 PM Direct-pay, no insurance required.
This article is general information for adults over 50 and is not a diagnosis or medical advice. It is not a reason to stop treatment that another clinician has prescribed for you. If you have any of the emergency symptoms described above, seek urgent medical care.