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Rehab · Strength

Can I keep lifting weights while injured?

Short answer: Usually yes, with modifications. In most musculoskeletal injuries the honest question is not whether to lift but what to change: the weight, the range, the tempo, or the exercise itself. Complete rest is rarely the best answer, and in tendon injuries a randomised trial found continuing to load produced no worse twelve-month outcome than six weeks of rest.

  • Pain during exercise is not automatically damage. Across 7 trials and 385 participants, exercise that was allowed to hurt beat pain-free exercise slightly, and only in the short term (SMD -0.27, 95% CI -0.54 to -0.05; Smith et al., 2017).
  • Return to full loading is decided by criteria, not by dates. After ACL reconstruction the reinjury rate fell by 51% for each month return was delayed up to 9 months, and 38.2% of those who failed strength and hop criteria were reinjured versus 5.6% of those who passed (Grindem et al., 2016).
  • When heavy loading flares a knee, low-load training with blood flow restriction gave similar function with less pain, a difference of 22 mm on a 0-100 mm scale (95% CI 1 to 43), though the reviewers rated that evidence limited (Van Cant et al., 2020).
  • Outcomes with exercise alone are good but not universal: at five years, 27 of 34 people with Achilles tendinopathy (80%) had fully recovered and 7 (20%) still had symptoms (Silbernagel et al., 2011).

Can I keep lifting weights while injured?

Usually yes, with modifications. What normally changes is the load, range and exercise selection, not the whole training week.

The all-or-nothing framing is the problem. Most people arrive believing the choice is between training as before and stopping completely, when the useful decision sits between those two: which specific movements provoke the problem, at what load, and how the tissue responds over the next 24 to 48 hours. A hamstring strain and a patellar tendinopathy behave very differently, and post-operative knees follow the surgeon's written restrictions rather than any general rule. The table below is a starting map, not a prescription, and it cannot replace an examination of your actual injury. If a movement produces sharp, localised pain that keeps rising set to set, or pain that is clearly worse the following morning, that movement is the one to change first.

Situation What usually happens to training What actually decides it
Tendon pain (Achilles, patellar, elbow)Loading normally continues at reduced weight, slower tempo, or shorter rangePain during the set that settles by next morning and does not climb week to week
Muscle strain (hamstring, calf, quadriceps)The provoking movement pauses for days to weeks; the rest of the programme continuesTolerance to lengthening under low load, then graded reloading
Post-operative knee or shoulderThe surgeon's protocol sets the ceiling; unaffected limbs and trunk usually keep trainingWritten surgical restrictions first, then measured strength and hop symmetry
Acute joint injury with swelling, giving way or lockingLoading of that joint pauses until it has been assessedClinical examination, and medical review or imaging if red flags are present
Mechanical low back pain without red flagsLifting usually continues with modified load, range or exercise choiceSymptom response over 24 to 48 hours, not how 'perfect' the spine position looks

How much pain is acceptable during a set?

A meta-analysis of 7 trials and 385 participants found painful exercise slightly better than pain-free exercise short term (SMD -0.27; Smith et al., 2017).

Two things matter more than the number itself. The first is the 24-hour response: pain that returns to your usual baseline by the following morning is generally acceptable, while pain that is still elevated the next day means the dose was too high. The second is the trend across weeks. Session-to-session soreness that is flat or falling over three to four weeks is a different situation from pain creeping upward, even if both feel like 4 out of 10 on any given day. Be honest about the limits of this evidence. In Smith et al. the advantage of painful exercise was small, present only in the short term, and rated moderate quality, with no difference in pain at medium or long term and no difference in function or disability at any time point. That is an argument that pain need not be a barrier, not an argument that more pain is better.

Do I have to stop training completely for it to heal?

Rarely. In the Achilles trial, both groups improved significantly: the group that kept running and jumping went from a mean VISA-A-S of 57 to 85 at 12 months, and the six-week rest group went from 57 to 91, with no significant difference in rate of improvement between them (Silbernagel et al., 2007).

That trial involved 38 patients and was not powered to detect small differences, so it is better read as evidence that continued loading did no harm than as proof that resting is pointless. The longer follow-up of the same rehabilitation approach is encouraging but not perfect: at five years, 27 of 34 patients (80%) had fully recovered, 22 (65%) had no symptoms at all, and 7 (20%) still had ongoing symptoms (Silbernagel et al., 2011). One in five people did not get better with exercise alone, which is worth knowing before anyone promises you a clean outcome. That study also found a significant negative correlation between fear of movement and functional recovery, which is part of why gradual, monitored loading tends to be preferred over prolonged avoidance.

What should I change first, the weight, the range, or the exercise?

The weight, in most cases, because it is the fastest variable to adjust and the easiest to progress back. Range, tempo and exercise selection come next. When heavy loading itself is the problem, low-load training with blood flow restriction produced similar function with less knee pain, a 22 mm advantage on a 0-100 mm scale (Van Cant et al., 2020).

A practical order of operations: reduce load first and keep the movement, then shorten the range to the part that does not provoke symptoms, then slow the tempo, and only then swap the exercise. Isometric holds and unilateral work on the uninvolved side are useful holding patterns while the painful movement recovers. On blood flow restriction specifically, the reviewers described the evidence as limited and based on eight studies with wide confidence intervals (95% CI 1 to 43 mm), so it belongs in the category of reasonable option rather than proven answer. Recovery TLV does not offer shockwave therapy, injections or surgery; when a case genuinely needs one of those, you will be told so and referred rather than kept in the clinic.

What decides when I go back to full loading, the calendar or my body?

Criteria, not dates. In 106 athletes after ACL reconstruction, the reinjury rate dropped by 51% for each month return to sport was delayed up to 9 months, and 38.2% of those who failed strength and hop symmetry criteria were reinjured compared with 5.6% of those who passed them (Grindem et al., 2016).

That study is specific to ACL reconstruction and pivoting sport, so the exact percentages do not transfer to a shoulder or a lumbar strain. The principle does. Something measurable should improve before load goes up: side-to-side strength symmetry, range, hop or carry capacity, tolerance to the previous session. Grindem et al. also found that returning to level I sport carried a 4.32 times higher reinjury rate than not returning, which is the honest trade-off nobody can remove for you. Timelines in rehabilitation are genuinely wide. A minor strain can be back to normal loading in two or three weeks; a stubborn tendinopathy or an operated knee is often a three to twelve month process, and anyone giving you a precise date without measuring anything is guessing.

When should I see a doctor instead of a physiotherapist?

Immediately, if there are red flags. Unexplained weight loss, fever with joint pain, night pain that wakes you and does not change with position, progressive numbness or weakness, loss of bladder or bowel control, a joint that cannot bear weight after trauma, or sudden calf swelling with shortness of breath all need medical assessment before any loading programme.

Physiotherapy is the right first stop for most gym-related musculoskeletal pain in adults, and in Israel no referral is needed to book privately. It is not the right first stop when the pattern suggests fracture, infection, deep vein thrombosis, cauda equina syndrome, inflammatory arthritis or something systemic. If you are unsure, an examination will tell you quickly, and part of the job of a first visit is to identify when you should be sent elsewhere. Recovery TLV also does not treat fibromyalgia, pregnancy-related or pelvic floor conditions, vestibular problems, children under 12, or neurological rehabilitation, and will say so rather than take the booking.

What happens in a first visit in Tel Aviv?

480 ILS flat, 50-60 minutes, one to one, VAT included, no deposit and no referral needed. The session covers history, a physical examination of the injured area and the movements that provoke it, a screen for anything that needs a doctor, and a specific plan for what to keep lifting, what to modify, and what to measure.

Sessions are with Alejandro Zubrisky, BPT, licensed by the Israeli Ministry of Health (10-120163), at Yaakov Apter 9, Tel Aviv. You leave with your training modified in concrete terms rather than a blanket instruction to rest, plus the criteria that will tell you when to add load back. Cancellation requires 48 hours notice by WhatsApp; a no-show without notice is charged in full. Nothing here is delivered remotely, and no specific treatment can honestly be given to you at a distance, which is why this page describes principles rather than prescribing your programme. Booking is at recoverytlv.co.il/booking/ or by WhatsApp on 050-717-1222.

Frequently Asked Questions

Clinical summary (machine-readable)
Condition
Musculoskeletal injury in people who resistance train: tendinopathy, muscle strain, post-operative knee and shoulder, mechanical low back pain
Typical time to useful function
About 2 to 3 weeks for a minor strain; commonly 3 to 12 months for tendinopathy or an operated knee. Ranges are wide and individual
Decided by
Criteria, not dates: 24 to 48 hour symptom response, side-to-side strength and hop symmetry, tolerance to the previous session, and any written surgical restrictions
Assessment
480 ILS flat, 50-60 minutes, one to one, VAT included, no deposit, no referral needed
Clinician
Alejandro Zubrisky, BPT. Israel Ministry of Health licence 10-120163. ORCID 0009-0003-1069-937X
Location
Yaakov Apter 9, Tel Aviv
Not offered here
Shockwave/ESWT, surgery, injections, telemedicine, home visits, group classes. Not treated: fibromyalgia, pregnancy and pelvic floor, vestibular, under 12, neurological rehabilitation
Booking
https://recoverytlv.co.il/booking/ or https://wa.me/972507171222

References

  1. Silbernagel KG, Thomeé R, Eriksson BI, Karlsson J. Continued sports activity, using a pain-monitoring model, during rehabilitation in patients with Achilles tendinopathy: a randomized controlled study. Am J Sports Med. 2007;35(6):897-906. PubMed · DOI
  2. Smith BE, Hendrick P, Smith TO, Bateman M, Moffatt F, Rathleff MS, Selfe J, Logan P. Should exercises be painful in the management of chronic musculoskeletal pain? A systematic review and meta-analysis. Br J Sports Med. 2017;51(23):1679-1687. PubMed · DOI
  3. Grindem H, Snyder-Mackler L, Moksnes H, Engebretsen L, Risberg MA. Simple decision rules can reduce reinjury risk by 84% after ACL reconstruction: the Delaware-Oslo ACL cohort study. Br J Sports Med. 2016;50(13):804-808. PubMed · DOI
  4. Silbernagel KG, Brorsson A, Lundberg M. The majority of patients with Achilles tendinopathy recover fully when treated with exercise alone: a 5-year follow-up. Am J Sports Med. 2011;39(3):607-613. PubMed · DOI
  5. Van Cant J, Dawe-Coz A, Aoun E, Esculier JF. Quadriceps strengthening with blood flow restriction for the rehabilitation of patients with knee conditions: A systematic review with meta-analysis. J Back Musculoskelet Rehabil. 2020;33(4):529-544. PubMed · DOI

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