Common Injuries in Training
Linas JuozėnasShare
Common Injuries in Training
Understand what may have changed, choose the right response and rebuild with a clear plan.
A painful ankle, a sudden pull in the thigh or a recurring ache in the foot can interrupt an activity that matters to you. Knowing the common injury terms helps, but the most useful skill is deciding what to do next: stop, modify the task, seek assessment or follow an appropriate rehabilitation plan.
This chapter explains common muscle, ligament, tendon and bone problems without treating every ache as damage or every injury as a training mistake. It brings recognition, practical care and prevention together so that exercise remains something you can approach with understanding.
A ligament sprain, tendon problem and bone stress injury may need very different restrictions and rehabilitation.
Consider how symptoms began, how they change and what they prevent you from doing.
Match treatment and progression to the problem, with clear instructions for review.
How to use this chapter: This is a general adult exercise guide. Symptom examples cannot diagnose an injury or determine its severity. If a new problem is severe, affects circulation or sensation, or comes with other concerning symptoms, go directly to urgent warning signs. A known condition, recent operation or injury-specific restriction takes priority over general training advice.
What do the common injury terms mean?
Acute injuries have a sudden onset, often around a fall, collision, twist or forceful effort. Gradual-onset problems emerge over time and may be associated with repeated loading.[1] The distinction describes the history; it does not determine how serious the problem is.
| Term | What it describes | Important distinction |
|---|---|---|
| Sprain | Injury to a ligament, which connects bones at a joint. | It can range from a small injury to a complete tear. |
| Strain | Injury to muscle, the muscle–tendon junction or tendon. | A “pulled muscle” can vary substantially in severity. |
| Tendinopathy | Persistent tendon pain and reduced function associated with loading. | The term does not assume one specific tissue mechanism.[2] |
| Fracture | A break in a bone. | A traumatic fracture and a stress fracture have different histories.[3] |
| Dislocation | Loss of normal contact between the bones of a joint. | It needs prompt medical attention, even if the joint appears to move back.[4] |
| Bursitis | Inflammation of a bursa, a small fluid-filled sac near moving tissues. | Symptoms can overlap with nearby tendon or joint problems. |
The ligament, muscle and bursa definitions follow NIAMS patient information.[1] A clinician may use additional terms to describe the exact structure, site and severity.
A grade is not a recovery calendar
Some sprains and strains are described using numbered grades, but the meaning depends on the structure and classification being used. Ask what the label means for your movement, loading and follow-up. “Grade two” alone does not tell you when a particular sport will be appropriate.
Likewise, a diagnosis is more useful when it leads to a plan. Knowing that something is “inflamed” still leaves practical questions: what has been assessed, what activity is suitable, what should change and when should the response be reviewed?
Interpret soreness and pain carefully
Delayed-onset muscle soreness, or DOMS, typically develops after an unfamiliar or demanding activity and is most noticeable over the following one to three days. It often affects the muscles that did the work and gradually settles. Soreness is not required for a useful training response.[5]
That familiar pattern is a clue, not a way to rule out injury. A new painful area should be considered in its full context, especially when symptoms are severe, unusual or limiting ordinary movement.
Pain is a real personal experience influenced by biological, psychological and social factors. It is not a simple readout of the amount of tissue damage.[6] This does not make new pain unimportant; it means that location, history, function and examination matter alongside intensity.
| Observation | What to record | What it cannot prove |
|---|---|---|
| Symptoms began after an unfamiliar session | Which muscles were used and when the soreness appeared. | That every painful area is ordinary DOMS. |
| Pain began suddenly during a movement | The movement, location and any immediate change in function. | The exact injured structure or severity. |
| Pain keeps returning during activity | Whether it starts earlier, lasts longer or affects daily tasks. | That one particular tissue is responsible. |
| Pain eases during a warm-up | What happens later in the session and afterward. | That the tissue is healed or the planned load is appropriate. |
Do not turn uncertainty into repeated provocation
Avoid repeatedly hopping, tapping a painful bone, stretching harder or testing a maximum lift to decide whether something is injured. You do not need to reproduce the worst pain to justify asking for help.
A useful description might be: “The discomfort started halfway through yesterday's run, returned while walking home and is still affecting the stairs today.” That gives someone information they can work with. Calling it “good pain” or “bad pain” gives much less.
Review the direction of change
If a mild problem is clearly settling, that is different from one that is worsening, recurring or reducing what you can do. Do not use a fixed waiting period such as “two weeks” when symptoms already warrant assessment. The next section explains situations where prompt care matters.
Recognize symptoms that need urgent help
Some symptoms need assessment before any discussion of stretching, training technique or return to exercise. The examples below are not exhaustive. If the person is seriously unwell or cannot be moved safely, call emergency services.
In Lithuania and throughout the European Union, the emergency number is 112. Elsewhere, use the local emergency number.[7]
| Warning sign | Appropriate response | Why assessment matters |
|---|---|---|
| A deformed limb or joint, an open wound over a suspected fracture, or a cold, pale or numb hand or foot after injury | Emergency care. Support the area and avoid unnecessary movement. | There may be a serious bone, joint, nerve or circulation injury.[8] |
| Rapidly escalating severe pain, tight swelling or new marked weakness after a limb injury | Emergency assessment. Do not force movement or tighten a wrap over the swelling. | Serious complications need prompt examination.[8] |
| New difficulty passing urine, loss of bladder or bowel control, or numbness around the groin or saddle area with back or leg symptoms | Emergency assessment. Do not wait for a routine appointment. | These can indicate compression of the lower spinal nerves.[9] |
| A rapidly painful, hot, swollen joint, especially with fever or feeling unwell | Urgent medical assessment. | Joint infection is one possible cause and needs prompt treatment.[10] |
| Unexplained one-sided leg swelling, warmth or calf pain | Urgent assessment. If chest pain, breathlessness or collapse develops, call emergency services. | A blood clot can resemble a muscle problem.[11] |
| Muscle pain or weakness much more severe than expected, or tea- or cola-colored urine after exertion | Immediate medical assessment. Do not wait for every symptom to appear. | Rhabdomyolysis is a possible cause and requires testing.[12] |
Other injuries also deserve prompt assessment
Severe pain or swelling, inability to bear weight or use the limb normally, a suspected fracture, or a substantial loss of function should be assessed promptly.[13] A sudden pop followed by weakness may also need timely examination; see muscle strains and tendon tears.
A joint that is genuinely stuck, repeatedly gives way or remains significantly swollen needs a clinical review. These symptoms do not automatically mean surgery, but they should not be managed by repeatedly forcing the movement.
A head impact follows a different pathway
If concussion is suspected after a blow to the head or body, stop participation and arrange assessment. The person should not return to sport that day or resume until appropriately cleared. Severe or worsening symptoms require emergency care.[14]
Stopping is a useful decision in its own right. You do not need to finish the session, prove the injury or wait for permission from a training partner.
Respond to a new injury without guessing the treatment
The immediate goal is to prevent further trouble, identify the need for care and avoid treating a potentially serious injury as a minor strain. This sequence is a practical organizing aid, not a diagnostic test.
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Stop the activity that triggered the problem.
Put down equipment or leave the playing area with help if needed. Do not repeat the painful movement to see whether determination will change the result.
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Check whether urgent assessment is needed.
Use the warning signs above. If there is major trauma, deformity, a circulation or sensation change, or substantial loss of function, prioritize care over self-treatment.
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Protect and support the affected area.
Avoid forcing weight through a painful limb. Support a suspected fracture or dislocation in the position found. Do not attempt to pull or push a dislocated joint back into place.[4]
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Use simple comfort measures when appropriate.
For a minor injury without concerning signs, comfortable elevation or a suitable light support may help. A wrap should not create tingling, numbness, increasing pain or a color change; loosen or remove it if it does.
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Arrange the next step and record what happened.
Note the activity, timing, symptoms and effect on ordinary movement. Seek assessment when the problem is significant, uncertain, persistent or worsening. Follow specific instructions once the injury has been assessed.
Understand what ice can and cannot do
A wrapped cold pack may help with short-term comfort. Use a cloth barrier, limit an application to roughly 15–20 minutes, check the skin and stop earlier if uncomfortable. Do not sleep with it on, and get advice before using cold where circulation or sensation is impaired.[15]
An ankle-sprain trial compared two icing schedules and found a short-term difference in pain during activity, without corresponding differences in several other outcomes. It did not establish that ice accelerates tissue healing or that everyone needs it.[16]
Rest needs an injury-specific meaning
Protection from a harmful load can be essential. Prolonged complete inactivity is not the automatic next step for every minor injury. The appropriate balance between protection, movement and loading depends on what is injured, as the following sections explain.
If pain relief is needed, a pharmacist or clinician can advise on a suitable medicine. Anti-inflammatory medicines have contraindications and interactions; taking them is not a substitute for assessing an injury or permission to train through it.[17] See Pain Management for a fuller discussion.
Sprains, joint instability and the example of the ankle
A sprain injures a ligament around a joint. An ankle may be injured when it rolls or twists; a knee or wrist may be injured in a fall or sudden change of direction. The mechanism helps the assessment, but it cannot establish whether only a ligament was affected.
Rule out the problems that change treatment
An ankle injury may involve bone, cartilage, tendons or ligaments other than those involved in a typical outer-ankle sprain. A knee injury may involve several structures at once. Do not assume that being able to move the joint means the injury is minor.
A clinician uses the history and examination to decide whether imaging or additional assessment is needed. Ask what has been identified and whether there are limits on weight-bearing, movement or the use of a support.
Movement and support are selected together
The 2021 lateral ankle sprain guideline recommends appropriate external support and progressive weight-bearing, with treatment adjusted to severity and the person's needs. More severe injuries may require a period of immobilization. Structured exercise is also part of care.[18]
This guidance applies to a diagnosed lateral ankle sprain. It should not be transferred to a suspected fracture, a different ankle injury or an unassessed painful joint.
Less swelling is not the whole recovery
As symptoms improve, the plan may need to address walking, ankle movement, strength, balance and the demands of the chosen activity. Ask how those tasks will be introduced and reviewed rather than assuming the end of visible swelling is the end of rehabilitation.
If the ankle repeatedly gives way, or fear of another sprain changes how you move, bring that into the discussion. It is useful information for planning. A brace may have a role, but the choice should be connected to the injury and activity rather than treated as a universal fix.
Keep useful practice after the first improvement
In a randomized trial, adding a home balance and proprioceptive program after usual care reduced recurrent ankle sprains.[19] Proprioception refers to sensing body position and movement. The finding supports that program in that setting; it does not mean everyone needs an unstable balance board or the same exercises.
For a knee, shoulder or other joint, use the relevant rehabilitation plan. Similar words such as “sprain” or “instability” do not make the exercises interchangeable.
Muscle strains and substantial tendon tears
A muscle strain may occur during acceleration, a forceful change of direction, lifting or an unexpectedly large stretch. Familiar examples include the hamstrings, quadriceps, calf and groin muscles.
Thigh strains can produce sudden pain, a snapping or popping sensation, weakness and bruising that becomes more visible later. An injury near the upper hamstring attachment may instead involve a substantial tendon injury that needs timely assessment.[20]
Do not stretch a new strain to prove it is only tightness
A sudden painful pull is different from planning a flexibility session. Stop the provoking activity, consider the effect on function and seek care when the injury is substantial or uncertain. A forceful stretch is not a way to determine the tear's severity.
A practical account for the clinician is: “I felt a sharp pain while accelerating, stopped immediately and now cannot walk normally.” There is no need to recreate the sprint for the description to be useful.
Recognize the possibility of an Achilles rupture
A sudden pop or striking sensation at the back of the ankle or calf, followed by difficulty pushing off or walking, can indicate an Achilles tendon rupture. It needs prompt medical assessment. Treatment may be surgical or nonsurgical, depending on the situation.[21]
Do not use a self-administered strength test to decide whether you can continue. The important action is to stop loading the suspected injury and arrange assessment.
Rehabilitation should approach the real demand
Recovery from a diagnosed strain may involve a progression from manageable movement toward strengthening and then the demands that matter for the person's activity. The plan for a recreational walker will differ from the plan for repeated sprinting.
Ask what must improve before the next stage. Comfortable everyday walking, for example, does not demonstrate that a muscle is ready for a full-speed sprint. Likewise, a small clinic exercise may be one useful stage without being the final test.
Use time estimates carefully
Recovery depends on the injured structure, extent of injury and activity demands. A general label cannot provide an exact return date. Ask for an expected course, the milestones being used and what would prompt reassessment. This makes uncertainty manageable without pretending it can be removed.
Tendinopathy: understand the symptoms and loading plan
Tendinopathy is the preferred clinical term for persistent tendon pain and impaired function related to loading. “Tendinitis” specifically refers to inflammation; persistent tendon symptoms should not automatically be explained as inflammation alone.[2]
Common locations include the Achilles tendon, patellar tendon, tendons near the elbow and the rotator cuff. Pain near a tendon is a reason to consider the problem, not enough to diagnose it without appropriate assessment.
Symptoms can vary across the day and session
Some people describe stiffness after rest or discomfort that changes as they become active. Record what happens afterward as well as during the warm-up. A temporarily more comfortable tendon does not establish that the day's loading is suitable.
Education and exercise belong in the same plan
The Dutch Achilles tendinopathy guideline emphasizes education, load management and exercise. It also distinguishes insertional pain, where the tendon meets the heel, from midportion problems; it advises beginning insertional exercises on a flat surface.[22]
This is one reason that a generic heel-drop routine from a step should not be prescribed to every person with heel pain. The location, diagnosis and current tolerance affect the exercise choice.
Eccentric exercise is an option, not the only useful loading method
An eccentric action involves a muscle lengthening while producing force, such as the lowering part of a calf exercise. In a randomized trial of 58 people with chronic midportion Achilles tendinopathy, both eccentric training and heavy slow resistance training improved outcomes.[23]
That study does not establish one program for every tendon, a fresh tear or an unassessed painful area. It also does not justify the claim that a particular exercise simply “realigns collagen” and guarantees healing.
Ask for instructions you can apply between appointments
A useful plan identifies the exercise, resistance, range, amount, frequency and review point. It should explain how to respond if symptoms change during the session or later. Ask for a demonstration and describe back what you understand.
There is no single pain-score cutoff that makes all tendon loading appropriate. Guidance developed for one diagnosed condition should not be copied to a suspected bone stress injury or rupture. Keep the diagnosis and the exercise rules connected.
Plan around the activities that still matter
Discuss work, walking, stairs, sport and caregiving as well as the formal exercise program. A rehabilitation dose may look modest on paper while the rest of the day contains substantial use of the same area. Describing that total picture makes the plan more realistic.
Recognize bone stress injuries before continuing impact
Bone stress injury covers a spectrum that can begin before a visible fracture line develops. Continued loading can allow the injury to progress to a stress fracture. The appropriate protection depends on its location and severity.[3]
Bone stress problems can occur after a change in running, jumping or walking demands. They can also occur with lower demands when bone health is impaired. They are not limited to competitive athletes.
Pay attention to persistent, localized load-related pain
Pain in a particular area of the foot or lower leg that returns with weight-bearing, becomes more persistent or affects ordinary walking deserves assessment. Do not repeatedly tap the area or perform hops to decide whether the bone is safe to load.
Hip pain also has several possible causes, including stress injury.[24] Persistent hip or groin pain during loading needs prompt assessment, especially if walking is painful. Stop impact activity and avoid loading that causes pain until reviewed.
An early normal X-ray may not settle the question
Stress fractures may not appear on an X-ray early in their course. If clinical suspicion remains, other imaging such as MRI may be appropriate.[25] A reassuring first image should be interpreted with the symptoms and examination, not used alone to justify continued painful training.
Offloading is a specific treatment decision
A diagnosed bone stress injury may require reduced weight-bearing, crutches, protective footwear or other treatment. Some locations need more protection or specialist care than others.[3] Follow the prescribed restrictions even if you feel able to do more.
“Low impact” does not automatically mean permitted. Cycling, pool exercise or another alternative still needs to fit the injury and care plan. AAOS advises obtaining clearance before resuming activities involving the affected foot or ankle, including lower-impact options.[25]
Look beyond the single painful site
A useful assessment may include previous bone injuries, recent activity changes, nutrition, medications and other aspects of bone health. Tell the clinician if the injury followed a relatively small amount of activity or if similar problems have happened before.
Return to impact should be planned after the necessary clinical milestones are met. Avoid using an arbitrary number of pain-free days or a general running progression as a substitute for an injury-specific return plan.
Consider the knee, shoulder, shin and back in context
People often describe an injury by body region: “runner's knee,” “a bad shoulder” or “shin pain.” Those descriptions are useful starting points, but more than one condition can cause symptoms in the same area.
The following examples explain why the history and examination matter. They are not a set of tests to perform on yourself.
Pain around the kneecap
Patellofemoral pain can occur around or behind the kneecap during activities such as running, stairs or squatting. The label “runner's knee” is not reserved for runners.[26]
Distinguish a gradual ache from a new twisting injury with significant swelling, a genuinely locked knee or repeated giving way. Those details change what needs to be assessed.
Shoulder pain or weakness
The rotator cuff is one possible source of shoulder symptoms. Tears may be associated with pain and weakness, but assessment is needed to identify the problem and choose treatment. Many cases are managed without surgery.[27]
A new loss of the ability to raise the arm after a fall or forceful event deserves prompt assessment. Do not assume that extra shoulder stretching is the answer.
Pain along the shin
“Shin splints,” often called medial tibial stress syndrome, commonly describes exercise-related pain along the inner tibial region. Bone stress injury and other causes of lower-leg pain can require different management.[28]
Persistent or increasingly localized pain should not be dismissed because someone has applied a familiar nickname. Avoid repeated impact tests to distinguish the conditions yourself.
Back pain and leg symptoms
WHO distinguishes nonspecific low back pain from pain with an identifiable specific cause. Many episodes cannot be attributed to a single damaged structure.[29]
A painful lift does not, by itself, prove that a disc was injured or that one spinal position caused the problem. New neurological symptoms require attention, and the bladder, bowel or saddle-sensation changes described earlier need emergency assessment.
Ask what the explanation changes
If a clinician or coach proposes an explanation, connect it to a practical decision. Does it change the activity, loading, exercise selection, need for imaging or review interval? A useful explanation should help you understand the plan.
Be cautious about broad conclusions drawn from a photograph or one movement screen. Seeing a different foot position, a rounded back or an uneven squat is not enough to establish the cause of a person's pain.
Plan training load without relying on a magic percentage
Training load includes more than weekly distance or the weight on a bar. Duration, speed, resistance, repetitions, hills, impact, frequency and unfamiliar movements can all change the task. Work and daily activity may add further demands on the same area.
The weekly 10% rule is not an injury guarantee
A randomized trial in novice runners found no reduction in running injuries from a 13-week graded program based on the 10% rule compared with an eight-week standard program.[30] The finding does not make gradual progression pointless; it shows that this rule should not be presented as a proven boundary between safe and unsafe training.
A later observational study of 5,205 runners found associations between single-session distance spikes, measured against the longest run in the previous 30 days, and overuse injuries. The week-to-week distance ratio did not show the same relationship.[31]
This was observational research using device-recorded running distance and self-reported injuries. It does not establish an injury-proof threshold or tell an individual recovering from injury how far to run.
Look at the largest change as well as the total
As an arithmetic illustration, four five-kilometre runs and a fifteen-kilometre run plus a five-kilometre run both total twenty kilometres. They distribute the work very differently. A weekly total alone does not describe the longest session.
The same planning issue applies in the gym: keeping the number of sets unchanged while adding heavier resistance, a new exercise and a more demanding range still changes the session. Record the changes that help you understand what happened.
| Assumption | Useful question | Practical response |
|---|---|---|
| “The increase is under 10%, so it is safe.” | What changed in the actual sessions, and how did I respond? | Use the percentage as a description, not clearance.[30] |
| “The weekly total is unchanged.” | Did one session become much longer or harder? | Review the distribution and the biggest unfamiliar demand. |
| “Cross-training is a rest day.” | What movement and loading does the alternative still involve? | Count it as activity and check that it fits any injury restrictions. |
| “A missed session must be made up.” | Does adding it elsewhere still make sense? | Review the remaining plan instead of automatically stacking sessions. |
Change enough to learn from the response
A practical approach is to make a small, understandable change, keep other important features reasonably consistent and review the result. This is a planning principle rather than a scientifically established progression formula.
For example, decide whether today's change is extra duration or a faster pace. Record how the session felt and whether it changed ordinary function afterward. If symptoms recur or worsen, reassess rather than treating the schedule as a commitment that must be completed.
After an injury, use the progression agreed for that injury. General fitness advice cannot override a restriction on weight-bearing, impact, range or resistance.
Build preparation, strength and skill into the program
Prevention aims to reduce risk while supporting participation. It cannot promise that no injury will occur, and an injury does not prove that the person was careless or lacked discipline.
Some structured programs have useful injury evidence
A trial in young female football players tested a comprehensive warm-up program. It reduced overall, severe and overuse injuries, although the primary lower-extremity injury outcome was not statistically significant.[32] The program combined several elements; its results cannot be credited to one stretch or alignment cue.
In a trial involving 942 Danish male football players, a progressive Nordic hamstring program reduced new and recurrent acute hamstring injuries compared with usual training.[33] This supports that intervention in its setting, not an identical exercise dose for every person or a fresh hamstring injury.
The practical lesson is to use an established program with its instructions, progression and intended population in mind. A coach can help introduce the exercises and fit them into the overall training.
Prepare for the movement you will actually perform
Let a warm-up introduce the activity and its demands. Rehearse the first lift, begin an aerobic session gently or use a sport-specific sequence appropriate to your experience. See Warm-Up and Cool-Down for examples and the limits of common recovery claims.
A preparation routine should not become a test of whether you can force a painful area to cooperate. Persistent symptoms need their own review.
Use technique as a skill, not a source of fear
Learn the setup, movement and finish of an exercise. Choose a manageable challenge and ask for feedback that identifies something you can practice. Useful instruction explains what the task requires and why a change is proposed.
A statement such as “reduce the weight so you can control the lowering phase” gives you an action to try. A claim that one visible posture explains every injury does not. The technique chapter explores individual variation in more detail.
Keep equipment and surroundings practical
Use clear space, stable supports and equipment intended for the task. Learn adjustment and stopping mechanisms. Footwear should fit the activity and the person; inspect its condition and follow relevant manufacturer guidance rather than using one replacement distance for every shoe.
A belt, brace, tape or different shoe does not establish that an injured area is ready for more load. Give any support a defined purpose within the plan.
Support recovery and investigate bone-health concerns
An exercise plan needs room for ordinary life: sleep, meals, work, transport, caregiving and access to treatment. If the plan assumes resources or time you do not have, explain that early so it can be adjusted.
Low energy availability can affect more than performance
The IOC's REDs consensus describes health and performance effects when energy remaining after exercise is insufficient to support normal physiological functions. Problematic low energy availability can affect athletes of different sexes and can compromise bone health.[34]
Repeated bone stress injuries, menstrual changes or persistent difficulties with recovery are reasons for an appropriate clinical and nutritional review. They do not diagnose REDs by themselves, and body appearance alone cannot identify it.
Make food and supplementation decisions specific
Describe your actual meals, training and practical constraints when asking for dietary help. A clinician or registered dietitian can help identify what needs attention. A diagnosis of injury does not, on its own, tell you which supplement to take.
If a deficiency or bone-health condition has been identified, follow the relevant treatment plan. Avoid replacing that plan with a general “recovery” product or assuming that more of a nutrient must mean faster healing.
Tell the clinician about the wider history
Include previous injuries, medications, recent illness and changes in daily activity. Mention if an injury followed unusually modest loading or if similar problems keep returning. Information that seems unrelated to the workout can help make the assessment more complete.
Keep rest workable
If work or caring responsibilities make the prescribed protection difficult, ask what support, equipment or temporary adjustments might help. A plan that simply says “rest” needs translation into what you can and cannot do during the day.
The Nutrition for Recovery and Rest and Recovery Strategies chapters develop these topics further.
Progress from rehabilitation toward the activity
Returning after injury involves more than waiting for pain to disappear. The relevant questions depend on the diagnosis, the stage of recovery and what the person wants to do.
The Bern return-to-sport consensus describes a continuum from participation to sport and then to performance.[35] Returning to some activity is not always the same as being ready for every previous demand.
Connect the next step to a reason
An illustrative progression might move from comfortable daily tasks to planned exercises, then to selected sport practice and eventually more complete participation. The order and timing are not universal. A fracture restriction or postoperative plan can determine what is permitted at each stage.
Ask which change is being introduced: range, resistance, speed, repetition, impact or unpredictability. Naming the change makes it easier to understand both the purpose and the response.
Use more than one measure
For lateral ankle sprains, the PAASS consensus identifies domains including pain, ankle impairments, the athlete's perception, sensorimotor control and sport or functional performance. It does not establish one universal pass score.[36]
The broader principle is to assess what the activity requires. A pain-free walk, a single balance task or equal-looking movements on both sides cannot answer every question about readiness for a match, long run or physically demanding job.
Agree on the response to setbacks
A useful plan says what to do when the response differs from what was expected. Which symptom change means reduce the next session? Which means stop and contact the clinician? When should the plan be reassessed even if symptoms have not become severe?
Do not borrow a pain allowance from someone else's tendon program for a suspected fracture or acute tear. The instruction only makes sense within the condition for which it was given.
Include confidence and participation
Tell the clinician or coach which movements still feel uncertain and what you need to practice. A person may need clearer instructions, a supported setting or a more gradual introduction to the activity's demands.
Confidence and physical assessment can be discussed together. Neither should be used to dismiss the other. More detail appears in Return-to-Activity Guidelines and The Mental Aspect of Recovery.
Keep a clear plan between sessions and appointments
You do not need an elaborate tracking system. A short note can help you remember what changed, what was advised and which questions remain unanswered.
Describe the problem
Record when it began, the activity involved, the location and the effect on ordinary tasks. Include any sudden event, swelling or change in sensation.
Keep observations separate from guesses: “pain while climbing stairs” is an observation; “a torn tendon” is a diagnosis that needs assessment.
Write down the current instructions
Note permitted activities, restrictions, exercises, support use and the review date. Ask for clarification if “take it easy” leaves you uncertain about walking, work or training.
If several professionals are involved, check that they have the relevant information and that you understand who is coordinating the plan.
Review the response
Record the task performed and what changed during it, later that day and by the next planned session. Use the monitoring instructions given for the condition.
Track a few meaningful activities rather than repeatedly testing the painful area.
Bring a focused question
Ask: “What needs to improve before I try the next stage?” or “This activity is still difficult; what should change?”
If the plan has not produced the expected progress, ask whether the diagnosis, dose, practical barriers or treatment approach needs review.
Keep your place in the activity
When participation changes, it can help to remain involved in ways that fit the care plan: attending a team session, supporting a training partner or continuing an approved activity. Choose what is useful to you; staying involved should not create pressure to return before you are ready.
An injury can require patience and adjustment without becoming a verdict on your ability or future. A clear explanation, a workable plan and appropriate support give you something concrete to build on.
For help choosing and working with a professional, see Professional Help in Injury Prevention and Recovery. For the role of therapeutic exercise, see Rehabilitation Exercises.
Common questions
What is the difference between a sprain and a strain?
A sprain involves a ligament. A strain involves muscle, its junction with tendon or the tendon itself. Both terms cover injuries of different severity; the label alone does not establish a recovery time.
Can I diagnose ordinary soreness from its timing?
Timing can help describe the pattern, but it cannot rule out injury. DOMS usually develops after activity and settles over the following days.[5] Severe, unusual, worsening or function-limiting symptoms need appropriate attention.
If the pain goes away during a warm-up, can I keep training?
That change alone does not establish that the planned training is appropriate. Consider the diagnosis, later symptoms and any restrictions. Recurrent pain deserves review rather than repeated attempts to warm it away.
Does being able to walk mean there is no serious injury?
No. Walking ability is only one part of the assessment. A concerning mechanism, sudden weakness, significant swelling or persistent localized pain may still warrant prompt care. Do not use a self-test to clear yourself.
Should every injury be iced?
No. Cold can be an optional comfort measure for an appropriate minor injury. It does not replace assessment, and it needs skin protection and caution where circulation or sensation is impaired. See the initial response section.
Is eccentric exercise the best treatment for all tendon pain?
No single loading method fits every tendon problem. Both eccentric and heavy slow resistance programs improved outcomes in the cited midportion Achilles trial.[23] Exercise choice depends on the diagnosis, location and individual plan.
Can a stress fracture be missed on an early X-ray?
Yes. Early X-rays may not show it. Persistent clinical concern may lead to further imaging, such as MRI.[25] Follow the assessment and activity plan rather than treating one normal image as permission to continue.
Does increasing training by less than 10% prevent injury?
It is not a guarantee. The novice-runner trial did not find fewer injuries with its 10%-based graded program.[30] Review the actual change in sessions, your response and any injury-specific restrictions.
Do I need a scan or surgery for every injury?
No. The need for imaging depends on the assessment and the question it would answer. NIAMS notes that most musculoskeletal sports injuries do not require surgery.[13] Significant symptoms still deserve appropriate examination.
When can I return to my usual activity?
When the relevant clinical and functional milestones have been met for the injury and activity. Agree on the progression, restrictions and review points. The absence of pain or the passage of a set number of days is not a universal clearance rule.
Sources and scope
This chapter draws on selected official health resources, professional guidance, consensus statements and original studies checked in September 2026. It covers common adult training-related musculoskeletal problems. It is not a systematic review, a diagnostic tool or an individualized treatment plan.
Clinical guidance should be interpreted within its scope. Recommendations for a lateral ankle sprain, midportion Achilles tendinopathy or a particular bone stress injury are not interchangeable. Research in football players or novice runners does not establish one universal prevention program.
The symptom comparisons, first-response sequence and planning examples are educational synthesis. They help organize observations and decisions; they are not validated screening or return-to-activity tests. Urgent symptoms take priority over self-management.
Reference notes identify the evidence used, including indexed or institutional abstracts where full text was unavailable. The distinctions between short-term symptom relief, tissue recovery, function and injury prevention remain important when interpreting claims.
- National Institute of Arthritis and Musculoskeletal and Skin Diseases. Sports Injuries: Types, Symptoms, and Risk Factors. Official health information; reviewed September 2024.Definitions and risk context for common injuries. Symptom descriptions do not establish an individual diagnosis. Return to text ↑
- Scott A, Squier K, Alfredson H, et al. ICON 2019: International Scientific Tendinopathy Symposium Consensus: Clinical Terminology. British Journal of Sports Medicine. 2020;54:260–262.Consensus terminology for persistent tendon pain and impaired function. The term tendinopathy does not assume a single inflammatory mechanism. Return to text ↑
- American Academy of Orthopaedic Surgeons. Stress Fractures. OrthoInfo patient guidance.Bone stress injury spectrum and the importance of location-specific unloading. Return to text ↑
- US National Library of Medicine, MedlinePlus. Dislocation. Medical Encyclopedia; reviewed 17 June 2024.Guidance on protecting a suspected serious joint injury, avoiding attempts to reposition it and recognising circulation-related warning signs. Return to text ↑
- Cleveland Clinic. Delayed Onset Muscle Soreness (DOMS). Medically reviewed patient information, 19 December 2025.Used for the delayed pattern of soreness and the point that soreness is not required for progress. It is not an injury diagnostic rule. Return to text ↑
- International Association for the Study of Pain. IASP Announces Revised Definition of Pain. Definition announcement, 2020.Pain is a personal experience with biological, psychological and social influences. Return to text ↑
- European Commission. 112 – the EU’s emergency phone number. Official public guidance.Official emergency number for European Union countries. Return to text ↑
- Healthdirect Australia. Limb injuries. Patient guidance, reviewed 2025.Warning signs requiring assessment; emergency contacts are localized separately. Return to text ↑
- American Association of Neurological Surgeons. Cauda Equina Syndrome. Patient guidance.Urgent spinal nerve warning signs, including new bladder and saddle sensory changes. Return to text ↑
- MedlinePlus / A.D.A.M. Septic arthritis. Medical Encyclopedia, reviewed 2025.Rapidly painful swollen joints and the importance of prompt infection treatment. Return to text ↑
- MedlinePlus / A.D.A.M. Deep vein thrombosis. Medical Encyclopedia, reviewed 2025.Possible clot symptoms and emergency escalation for breathing or chest symptoms. Return to text ↑
- CDC / National Institute for Occupational Safety and Health. Signs and Symptoms of Rhabdomyolysis. Official guidance, 2025.Severe unexpected muscle symptoms or dark urine warrant immediate assessment. Return to text ↑
- National Institute of Arthritis and Musculoskeletal and Skin Diseases. Sports Injuries: Diagnosis, Treatment, and Steps to Take. Official health information; reviewed September 2024.Guidance on symptoms requiring assessment and the range of treatments. Care depends on the injury and its severity. Return to text ↑
- Centers for Disease Control and Prevention. Responding to a Sports-related Concussion. HEADS UP guidance.Remove a suspected concussion from sport and prevent same-day return pending clinical assessment. Return to text ↑
- Texas Health Resources. Ice vs. Heat: How to Decide Which is Best for Your Injury. Clinical patient guidance.Used for brief local applications, protective barriers and breaks. Generic healing timelines are not adopted. Return to text ↑
- Bleakley CM, McDonough SM, MacAuley DC. Cryotherapy for acute ankle sprains: a randomised controlled study of two different icing protocols. British Journal of Sports Medicine, 2006;40:700–705.Original article consulted through an author-provided copy. Two icing schedules were compared; there was no no-ice group. Return to text ↑
- Healthdirect Australia. Anti-inflammatory medicines (NSAIDs). Official patient information.NSAID use, gastrointestinal effects, interactions and limited self-treatment. Local product directions take priority. Return to text ↑
- Martin RL, Davenport TE, Fraser JJ, et al. Ankle Stability and Movement Coordination Impairments: Lateral Ankle Ligament Sprains Revision – 2021 (title shortened). Journal of Orthopaedic & Sports Physical Therapy, 2021;51:CPG1–CPG80.Indexed guideline recommendations on supports, progressive weight-bearing and structured therapeutic exercise for lateral ankle sprains. Return to text ↑
- Hupperets MDW, Verhagen EALM, van Mechelen W. Effect of unsupervised home based proprioceptive training on recurrences of ankle sprain: randomised controlled trial. BMJ. 2009;339:b2684. DOI: 10.1136/bmj.b2684.Trial of additional proprioceptive training after usual care for ankle sprain. Reduced recurrence in this context does not establish a universal exercise programme. Return to text ↑
- American Academy of Orthopaedic Surgeons. Muscle Strains in the Thigh. OrthoInfo patient guidance.Symptoms, clinical assessment and the distinction from more substantial tendon injuries. Return to text ↑
- American Academy of Orthopaedic Surgeons. Achilles Tendon Rupture (Tear). OrthoInfo patient guidance.Sudden tendon injury, assessment and treatment choices. Return to text ↑
- de Vos RJ, et al. Dutch multidisciplinary guideline on Achilles tendinopathy. British Journal of Sports Medicine. 2021;55:1125–1134. DOI: 10.1136/bjsports-2020-103867.Indexed Dutch guideline recommendations: education, load management and exercise; insertional and midportion problems require different considerations. Return to text ↑
- Beyer R, Kongsgaard M, Hougs Kjær B, et al. Heavy Slow Resistance Versus Eccentric Training as Treatment for Achilles Tendinopathy: A Randomized Controlled Trial. American Journal of Sports Medicine, 2015;43:1704–1711.Original-study abstract: 58 people with chronic midportion Achilles tendinopathy; both programs improved outcomes. Return to text ↑
- Hospital for Special Surgery. Hip Pain Causes, Conditions and Treatments. Clinician-authored patient guidance.Multiple sources of hip pain, including bone stress injuries. Return to text ↑
- American Academy of Orthopaedic Surgeons. Stress Fractures of the Foot and Ankle. OrthoInfo patient guidance.Early imaging limitations and individualized activity restrictions. Return to text ↑
- American Academy of Orthopaedic Surgeons. Patellofemoral Pain Syndrome. OrthoInfo patient guidance.Pain around the kneecap and activity-related symptoms; not a self-diagnostic rule. Return to text ↑
- American Academy of Orthopaedic Surgeons. Rotator Cuff Tears. OrthoInfo patient guidance.Shoulder pain and weakness, assessment and nonsurgical or surgical management. Return to text ↑
- American Academy of Orthopaedic Surgeons. Shin Splints. OrthoInfo patient guidance.Medial tibial symptoms and other possible causes of lower-leg pain. Return to text ↑
- World Health Organization. Low back pain. Official fact sheet, 2023.Distinguishes nonspecific back pain from identifiable specific causes. Return to text ↑
- Buist I, Bredeweg SW, van Mechelen W, et al. No effect of a graded training program on the number of running-related injuries in novice runners: a randomized controlled trial. American Journal of Sports Medicine, 2008;36:33–39.Institutional abstract consulted. GRONORUN was a prevention trial in novice runners, not a post-injury rehabilitation trial. Return to text ↑
- Schuster Brandt Frandsen J, Hulme A, Parner ET, et al. How much running is too much? Identifying high-risk running sessions in a 5200-person cohort study. British Journal of Sports Medicine, 2025;59:1203–1210.Institutional abstract consulted. Device-recorded distance and self-reported injuries; observational associations do not establish a safe progression threshold. Return to text ↑
- Soligard T, Myklebust G, Steffen K, et al. Comprehensive warm-up programme to prevent injuries in young female footballers: cluster randomised controlled trial. BMJ. 2008;337:a2469. DOI: 10.1136/bmj.a2469.Trial in 1,892 teenage female footballers. Overall injuries fell, while the primary lower-limb outcome did not reach statistical significance. The programme contained several components. Return to text ↑
- Petersen J, Thorborg K, Nielsen MB, Budtz-Jørgensen E, Hölmich P. Preventive effect of eccentric training on acute hamstring injuries in men’s soccer: a cluster-randomized controlled trial. American Journal of Sports Medicine, 2011;39:2296–2303.Original-trial abstract: progressive Nordic hamstring training in Danish male football players. Return to text ↑
- Mountjoy M, et al. 2023 International Olympic Committee’s (IOC) consensus statement on Relative Energy Deficiency in Sport (REDs). British Journal of Sports Medicine, 2023;57:1073–1097.Consensus on problematic low energy availability in athletes; not a self-diagnostic test. Return to text ↑
- Ardern CL, et al. 2016 Consensus statement on return to sport from the First World Congress in Sports Physical Therapy, Bern. British Journal of Sports Medicine, 2016;50:853–864.Return as a continuum and shared decision; no universal clearance threshold. Return to text ↑
- Smith MD, Vicenzino B, Bahr R, et al. Return to sport decisions after an acute lateral ankle sprain injury: Introducing the PAASS framework—an international multidisciplinary consensus. British Journal of Sports Medicine, 2021;55:1270–1276.Institutional abstract consulted. Expert consensus identifies assessment domains; it does not establish a universal clearance score. Return to text ↑