RSM-SPM-024
Written by Hironori Ikeda, MSc Sports Medicine
RSM International Academy · Chiang Mai, Thailand
Why Are Your Muscles Sore the Day After Training?
A new session of lunges can feel manageable at the time, yet make the thighs ache when going downstairs the next morning. The practical question is whether this fits delayed-onset muscle soreness (DOMS), or whether one painful area needs a different assessment.
At RSM, I first connect the timing and location of soreness with the muscles that worked. Then I compare a tolerable movement with palpation before choosing massage pressure. A tender quadriceps does not automatically need deeper treatment.
This article explains how to assess next-day soreness, understand the knee and ankle demands of stair descent, adapt sports massage and use the response to guide the next training session.
In This Article
- Why Are Your Muscles Sore the Day After Training?
- In This Article
- 1. Muscle Soreness After Training: DOMS or a Possible Injury?
- 2. Sore Quadriceps on Stairs: Knee Control and the Ankle’s Role
- 3. Palpating Sore Muscles: Tenderness Does Not Measure Muscle Damage
- 4. Sports Massage for DOMS: Choose Pressure Without Adding Soreness
- 5. DOMS Recovery: Re-test Movement Before Increasing Training Load
- Related RSM Clinical Blogs
- Supporting Clinical Notes
- Palpation, Contact and Re-Assessment
- Evidence, Adaptation and Professional Scope
- Study Sports Massage at RSM
1. Muscle Soreness After Training: DOMS or a Possible Injury?
DOMS is a reasonable possibility when soreness develops after unfamiliar or increased exercise, particularly repeated muscle-lengthening work. Lowering into a lunge is one example. Broad thigh tenderness the following day fits that history better than a sudden, sharply localized pain during one repetition.
When several muscles are sore, I do not begin by finding the most painful trigger point. I ask which exercise changed, how much was added and whether each sore region fits that activity. One area with a different onset, swelling or loss of function changes the assessment.
Timing alone does not exclude injury. As a clinical precaution, I pause massage for sudden pain with bruising or substantial loss of function and arrange injury assessment. Pain much worse than expected, dark urine or profound weakness can signal exertional rhabdomyolysis and warrants urgent medical care; do not wait for all three to appear.
2. Sore Quadriceps on Stairs: Knee Control and the Ankle’s Role
Going downstairs asks the supporting quadriceps to control the knee as it bends under load. Vastus medialis, vastus lateralis and vastus intermedius extend the knee; rectus femoris also crosses and flexes the hip. These muscles can work while lengthening to control descent, rather than simply straighten the leg.
The calf contributes as the shin moves forward over the foot into ankle dorsiflexion. Soleus and gastrocnemius produce plantarflexion force that helps control this forward movement while the hip and trunk influence how the body lowers. I watch whether the client avoids bending the knee, lifts the heel early or shifts weight away from the sore thigh.
If safe and tolerable, compare descent from a low step with the same hand support. A lower step may feel easier because the task has changed; that does not identify an injured muscle or prove an ankle restriction. Establish one comfortable setup to repeat after treatment.
3. Palpating Sore Muscles: Tenderness Does Not Measure Muscle Damage
Pressure tenderness tells you how sensitive an area feels; it does not reliably tell you how much exercise-induced muscle damage has occurred. Compare the muscle belly with the client’s familiar discomfort during movement. A tender point alone is not enough to diagnose a trigger-point problem.
On the thigh, distinguish superficial rectus femoris from the lateral vastus lateralis and distal medial vastus medialis. Vastus intermedius lies deeper; pressing harder does not establish that it is the source. Note whether sensitivity is broad across the exercised muscles or concentrated near a tendon or joint.
I begin with a comfortable, broad contact and adjust from the client’s response. If the thigh tightens defensively or the client withdraws, reduce pressure rather than work deeper. A distinct focal finding, tingling or radiating pain requires reassessment; it is not a reason to force a stroke through the area.
4. Sports Massage for DOMS: Choose Pressure Without Adding Soreness
Sports massage may ease DOMS, but less soreness is not the same as restored muscle function. In a small controlled elbow-flexor study, massage reduced some soreness measures without improving strength or range-of-motion recovery. That distinction matters when an athlete asks to train hard again.
For a broadly sore thigh, start in a supported position with light, broad contact over the accessible muscle belly. Travel along the thigh is the stroke path, not the pressure vector: separately choose the load into the selected surface and the small along- or across-contour component that remains comfortable. Observe whether the superficial tissue displaces and returns as contact eases. Adjust to the contour of rectus femoris or vastus lateralis rather than driving one deep stroke across every painful structure; this observation does not measure muscle damage or establish that a deeper layer has released.
The aim is a useful improvement in comfort without creating additional sensitivity. If even gentle contact aggravates symptoms, stop or change the plan. Aggressive friction, forced stretching or a claim that massage has “repaired the muscle” is not justified by tenderness or an immediate change in how the thigh feels.
5. DOMS Recovery: Re-test Movement Before Increasing Training Load
Repeat the original tolerable movement with the same support, step height and pace. Ask whether the familiar thigh discomfort changed and observe whether the client still avoids bending the knee. Do not count an easier, shallower step-down as a treatment improvement over the original task.
After the matched re-test, a separate comfortable rehearsal of the same low-step task can help the client explore coordinated knee bending, forward shin movement and hip control without forcing range or adding load. Record this active practice separately from the original comparison. Then consider the next session with the client and, where appropriate, their coach. If lowering remains uncomfortable or control is reduced, discuss less demanding practice instead of repeated downhill running or heavy lunges. Improved comfort alone does not establish readiness for sprinting, jumping or maximal strength work.
I also ask about next-morning soreness, fatigue and sleep before recommending progression within my scope. These reports help place the movement response in context. Persistent focal pain, worsening function or symptoms that no longer fit the training history call for reassessment rather than repeated recovery massage.
Related RSM Clinical Blogs
Browse all Sports Massage clinical guides
▷ Massage After Competition: Recovery, Soreness & Mobility — Sports Massage · Compare care immediately after competition with the delayed soreness discussed here.
▷ Pain After Training: Injury or Normal Load Response? — Sports Medicine Massage · Examine pain timing and loss of function when the presentation does not fit an expected training response.
▷ Sore After Hard Training: Recovery, Sleep & Load — Sports Medicine Massage · Connect persistent post-training soreness with recovery, sleep and accumulated load.
Supporting Clinical Notes
Palpation, Contact and Re-Assessment
▷ Massage for DOMS: Separate Comfort From Training Readiness
Evidence, Adaptation and Professional Scope
▷ Massage and Inflammatory Signals: What a Biopsy Study Shows
Study Sports Massage at RSM
At RSM International Academy in Chiang Mai, you practise connecting functional anatomy with the client’s movement, selecting a tolerable massage position and stroke, and checking what actually changed. Hironori Ikeda’s hands-on teaching develops the practical judgment behind those choices.
Explore the Sports Massage Course · View the course schedule · Ask about joining RSM
The Trigger Point Therapy Course provides the palpation foundation required for Sports Massage. For further work with overuse problems and kinetic-chain assessment, explore Sports Medicine Massage; its current prerequisites are Trigger Point Therapy, Deep Tissue Massage and Dynamic Myofascial Release.
About the Author
Hironori Ikeda, MSc Sports Medicine is the founder and lead instructor of RSM International Academy in Chiang Mai, Thailand. His teaching connects functional anatomy and clinical palpation with specific movement comparisons, treatment selection and re-testing.