When post-workout pain is no longer "normal"

Delayed onset muscle soreness (DOMS) is a normal physiologic response to exercise, especially to eccentric effort. It arises 24–48 hours after training, peaks at 48–72 hours, and resolves spontaneously in 3–5 days. Up to this point, it is a sign of healthy muscular adaptation.

But what happens when this pain does not go away? When, a week after a leg workout, the calf still hurts when walking? When pain that should be diffuse and transient becomes focal, persistent, and with a defined radiation pattern? At that point, DOMS has given way to something different: myofascial trigger points activated by eccentric overload. This scenario is especially common in "weekend warriors" and in people returning to exercise after long periods of sedentary lifestyle. The relationship with generalized pain with extreme fatigue is frequent when multiple muscle groups are affected.

How exercise activates trigger points

  1. Eccentric microinjury as the trigger

    Eccentric contraction (a muscle being lengthened while contracting — such as descending stairs or the negative phase of a squat) causes microinjuries in the muscle fibers. When the load exceeds recovery capacity, hypersensitive motor endplates form — the substrate of the myofascial trigger point.

  2. Local energy crisis

    The microinjury generates excessive release of acetylcholine at the affected motor endplates, causing sustained local contraction. This contraction compresses the local capillaries, reduces blood flow, generates ischemia and accumulation of algogenic substances — perpetuating pain and contraction in a vicious cycle.

  3. From DOMS to chronic trigger point

    When DOMS does not resolve in 5–7 days, muscle fibers with unrepaired microinjury form latent trigger points that become active. The pain pattern changes: it stops being diffuse and becomes focal, with radiation and worsening in specific positions.

  4. Peripheral and central sensitization

    Chronic trigger points release inflammatory substances (prostaglandins, bradykinin, substance P) that sensitize local nociceptors (peripheral sensitization). Over time, the central nervous system amplifies the pain signal (central sensitization), and previously innocuous stimuli become painful.

  5. Fear of movement as a perpetuator

    The patient who associates exercise with prolonged pain develops kinesiophobia — fear of moving. They avoid exercise, becoming progressively deconditioned. The deconditioned muscle is even more vulnerable to trigger point activation — creating a cycle of pain, fear, and inactivity.

Data on persistent post-exercise muscle pain

>7 days
PROLONGED PAIN
some recreational practitioners report episodes of post-exercise muscle pain that last longer than the expected physiologic period of DOMS — exact frequency varies among studies and populations
24–72h
TYPICAL DOMS WINDOW
delayed onset muscle soreness typically peaks between 24 and 72 hours and resolves within 5 days; persistence beyond this period justifies investigation of trigger points or other causes
—
FASTER RECOVERY
patients with post-exercise trigger points treated with dry needling usually report faster recovery compared with rest alone; exact effect size depends on the study
—
"WEEKEND WARRIORS"
the pattern of abrupt return to training with inadequate load progression is described as a clinical risk factor for persistent pain and recurrent trigger points

Recognizing pain that is no longer DOMS

Critérios clínicos
08 itens

Post-exercise trigger points vs. DOMS — myofascial warning signs

  1. 01

    Persistent muscle pain for more than 7 days after exercise

  2. 02

    Focal pain at a specific point in the muscle (not diffuse like DOMS)

  3. 03

    Pain that radiates to another region (e.g., quadriceps referring to the knee)

  4. 04

    Palpable and painful nodule within the affected muscle

  5. 05

    Pain that worsens with passive stretching of the involved muscle

  6. 06

    Limitation of range of motion that does not improve with warm-up

  7. 07

    Repetitive episodes: every time training is performed, the same pain persists

  8. 08

    Pain disproportionate to the exercise performed (light training, intense pain)

Myths and facts about post-exercise pain

Myth vs. Fact

MYTH

"No pain, no gain" — pain is a sign of effective training

FACT

Mild to moderate DOMS is normal and expected, especially in new training or with load progression. However, intense and prolonged pain is not a sign of effective training — it is a sign of overload. Muscular adaptation occurs with adequate stimulus followed by sufficient recovery. Pain that lasts more than 5–7 days indicates that the stimulus exceeded recovery capacity.

MYTH

Persistent pain after exercise is lack of conditioning — it will go away with more training

FACT

Trigger points activated by exercise do not resolve with "more training" — in fact, training over a muscle with active trigger points worsens the condition. The correct treatment is to deactivate the trigger points with dry needling, allow adequate recovery, and then return to exercise with gradual progression.

MYTH

Anti-inflammatories are the best treatment for prolonged post-exercise pain

FACT

Anti-inflammatories may mask pain without resolving the cause. Furthermore, their chronic use can delay muscle repair. When post-exercise pain persists due to trigger points, the most effective treatment is dry needling — which deactivates the trigger point mechanically, restoring local blood flow and interrupting the pain cycle.

The boundary between training and injury

Treatment protocol

Assessment and trigger point mapping
1st visit

Identification of muscles affected by exercise history (which workout, which movements). Palpation to locate active trigger points — differentiating from residual DOMS. Assessment of range of motion and strength. Exclusion of warning signs: rhabdomyolysis (dark urine, intense edema), compartment syndrome.

Dry needling of activated trigger points
Sessions 1–3

Needling of trigger points in muscles overloaded by exercise. 2 Hz electroacupuncture for analgesia and increased local blood flow. In athletes, sessions can be performed 2x/week to accelerate recovery. Guidance on local cryotherapy after needling.

Restoration of range and flexibility
Sessions 3–5

Active assisted stretching of treated muscles. Complementary myofascial release with foam roller. Low-intensity exercises (walking, light cycling) to promote blood flow without overloading. Education on warm-up and stretching pré- and post-training.

Return to exercise with safe progression
Sessions 6–8

Gradual return program: volume and intensity reduced by 50% in the first week, 10–15% progression per week. Prioritize concentric work before reintroducing eccentric. Monitoring: if post-training pain lasts more than 72 hours, reduce load the following week. Monthly maintenance sessions for athletes with predisposition.

Clinical pearl: the 72-hour rule

Scientific evidence

Frequently asked questions

FREQUENTLY ASKED QUESTIONS · 03

Frequently Asked Questions

If the pain is mild DOMS (diffuse, without focal point), training the same muscle group with reduced load can even accelerate recovery ("active recovery"). If the pain is focal, with a palpable nodule and radiation — suggesting an activated trigger point —, training the affected muscle will worsen the condition. In that case, treat the trigger points first and train other muscle groups while waiting for recovery.

Ideally wait 24–48 hours after training for dry needling, allowing the inflammatory peak of DOMS to pass. In athletes with an upcoming competition, dry needling can be performed 48–72 hours before the event. After the session, relative rest of the treated muscle for 24 hours is recommended.

Magnesium contributes to muscle relaxation and can help with cramps, but does not resolve established trigger points. Creatine can assist muscle recovery through improved energy stores. No supplement replaces direct treatment of trigger points when these are the cause of persistent pain. They are complements, not substitutes.