Pain-Free Lifting: How to Protect Your Joints in Strength Training
Dr. Ben Stokes • October 15, 2025

Strength training is one of the best things you can do for your body. It helps you build muscle, strengthen bones, boost metabolism, protect your joints, and it’s safe for most people when the program and technique are right. But, without proper form or recovery, lifting can do the opposite and cause pain or long-term damage. As a Doctor of Physical Therapy, I often see patients who love to lift but start developing shoulder, knee, or back pain. The good news? Most of these issues are preventable with the right approach.(1)

Below is a simple, science-backed guide to keep your joints happy while you get stronger!

How Strength Training Affects Your Joints

Your joints are designed to handle load, but only when muscles, tendons, and ligaments work together. When technique or mobility is off, that stress shifts to areas that aren’t meant to carry it. Research shows that proper resistance training improves joint health by increasing cartilage nutrition, enhancing tendon strength, and improving coordination between muscles – which helps spread the load safely. Poor muscle control or weakness, on the other hand, is tied to extra joint stress and degeneration, which can cause stiffness. Proper resistance training can actually improve your flexibility just as well as stretching.(1-4) In other words, when done correctly, lifting doesn’t “wear down” your joints - it actually helps protect them.

Common Mistakes That Irritate Joints

Even experienced lifters can develop bad habits that lead to discomfort or injury. Here are a few of the most common mistakes I see:

  • Only training prime movers (your big muscles). Skipping stabilizers (like the rotator cuff, scapular muscles, core, and hips) leaves joints less protected.(6,7)

  • Not focusing on technique can cause movement deficits such as valgus knee collapse on landings/squats and sloppy shoulder/scapular control with upper body exercises. Both are linked with higher injury risk.(5,7)

  • No plan (or the wrong plan). Programs that don’t follow gradual progression make aches more likely. The American College of Sports Medicine (ACSM) recommends small, steady load increases (about 2–10%), depending on the lift and training status.(2)

  • Progressing volume and/or weight faster than your joints can adapt. That mismatch can raise injury risk.(10,11)

  • Ignoring pain and just pushing through instead of addressing the cause.

Your pain-free lifting plan (step-by-step)

  • Warm up 5–10 minutes.

    • Dynamic warm-ups improve blood flow, mobility, and muscle activation. A 5–10 minute warm-up prepares your joints for load.

      • Use easy cardio plus 1–2 light sets of your first lift. Add 1–2 simple landing or balance drills on lower-body days to “teach” good knee alignment. Neuromuscular prep like this reduces risky knee mechanics.(5,6)

  • Own your technique.

    • Good form should always come before heavy weight. If you can’t maintain proper alignment, reduce the load. Having a skilled professional assess your movement patterns can help you find weak spots before they cause problems.

      • Squat/hinge: knees track over toes; spine neutral; push through mid-foot/heel.

      • Push/press: ribs down; don’t shrug early; finish with controlled shoulder blade (scapular) motion. Good scapular control and rotator-cuff strength are modifiable shoulder-injury risk factors.(7)

  • Respect tendon rules.

    • Tendons like consistent, progressive loading. For painful tendons (like Achilles), research shows that both heavy-slow resistance and classic eccentrics work well; heavy-slow may feel more satisfying early on, but long-term results are similar.(8)

    • If you’re in a rehab phase, a pain-monitoring approach that allows continued activity within sensible limits did not worsen outcomes in Achilles tendinopathy.(9) Work with your PT to set your personal “allowable pain” range.

  • Progress gradually.

    • Most lifters do best by increasing 2–10% at a time, based on the lift and how you’re feeling.2 Keep reps in reserve (RIR) or use a rate of perceived exertion (RPE) target, so effort climbs slowly week to week. This respects how muscle and tendon adapt over time.(10,11)

  • Build your “joint armor.”

    • Add 1–2 sets of accessories after your main lifts:

      • Shoulder: external rotations, scaption raises, serratus punches(7)

      • Knee/hip: clamshells, lateral band walks, single-leg balance variations(5)

      • Core: plank progressions, anti-rotation presses(6)

  • Recover on purpose.

    • Sleep 7–9 hours, spread hard sessions 48–72 hours apart for the same muscle group, and rotate intensities. This helps tendons catch up to muscles.(10,11)

Quick self-check list

  • Does your knee cave inward on squats or landings? Practice mini-landings and slow eccentrics, focusing on knees over toes.(5,6)

  • Shoulders ache with presses? Add 2–3 sets of light cuff work and scapular control drills after lifting for at least 4–6 weeks.(7)

  • Feel “tight” after lifting? Keep training - resistance work can increase range of motion when done correctly.(3)

When to see a Doctor of Physical Therapy (DPT)

  • Sharp or worsening joint pain that lingers >5 days

  • Night pain, locking, giving way, or swelling

  • Numbness/tingling or pain that limits daily tasks

  • A tendon that’s stayed sore for weeks despite easy training

A DPT can assess movement, load tolerance, muscle imbalances, and tissue irritability; build a plan that respects how your muscles and tendons adapt; and progress you safely back to heavy training.(1,2,10,11)

At Tualatin Valley Physical Therapy, we specialize in helping athletes and active adults move better, lift safer, and perform stronger. Pain-free lifting isn’t about avoiding challenges, it’s about moving well, building smart, and respecting your body’s limits. Protect your joints, train with purpose, and your strength will last a lifetime.

References

  1. Fragala MS, Cadore EL, Dorgo S, et al. Resistance Training for Older Adults: Position Statement From the National Strength and Conditioning Association. J Strength Cond Res. 2019;33(8):2019-2052. doi:10.1519/JSC.0000000000003230

  2. Ratamess NA, Alvar BA, Evetoch TK, et al. Progression Models in Resistance Training for Healthy Adults. Med Sci Sports Exerc. 2009;41(3):687-708. doi:10.1249/MSS.0b013e3181915670.

  3. Alizadeh S, Daneshjoo A, Zahiri A, et al. Resistance Training Induces Improvements in Range of Motion: A Systematic Review and Meta-analysis. Sports Med. 2023;53(3):707-722. doi:10.1007/s40279-022-01804-x.

  4. Herzog W, Longino D, Clark A. The role of muscles in joint adaptation and degeneration. Langenbecks Arch Surg. 2003;388:305-315. doi:10.1007/s00423-003-0402-6.

  5. Zebis MK, Andersen LL, Brandt M, et al. Effects of evidence-based prevention training on neuromuscular and biomechanical risk factors for ACL injury in adolescent female athletes: A randomized controlled trial. Br J Sports Med. 2016;50(9):552-557. doi:10.1136/bjsports-2015-094776.

  6. Jeong J, Choi DH, Shin CS. Core Strength Training Can Alter Neuromuscular and Biomechanical Risk Factors for Anterior Cruciate Ligament Injury. Am J Sports Med. 2021;49(1):183-192. doi:10.1177/0363546520972990.

  7. Hoppe MW, Baumgart C, Polglaze T, Freiwald J. Risk factors and prevention strategies for shoulder injuries in overhead sports: an updated systematic review. J Exp Orthop. 2022;9(1):78. doi:10.1186/s40634-022-00493-9.

  8. Beyer R, Kongsgaard M, Hougs Kjær B, Øhlenschlæger T, Kjær M, Magnusson SP. Heavy Slow Resistance Versus Eccentric Training as Treatment for Achilles Tendinopathy: A Randomized Controlled Trial. Am J Sports Med. 2015;43(7):1704-1711. doi:10.1177/0363546515584760.

  9. 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. doi:10.1177/0363546506298279.

  10. Brumitt J, Cuddeford T. Current Concepts of Muscle and Tendon Adaptation to Strength and Conditioning. Int J Sports Phys Ther. 2015;10(6):748-759. PMCID: PMC4637912.

  11. Mersmann F, Bohm S, Arampatzis A. Imbalances in the development of muscle and tendon as risk factor for tendinopathies in youth athletes: current evidence and concepts of prevention. Front Physiol. 2017;8:987. doi:10.3389/fphys.2017.00987. PMCID: PMC5717808.

Physical therapist manipulating a patient’s elbow during rehab assessment
October 18, 2026
It's National Physical Therapy Month: Why PT Isn't Just for Pain October is National Physical Therapy Month, a time to recognize how physical therapists help people move better and live healthier at every stage of life. This year, we want to bust one of the biggest myths about our profession. Most people think of physical therapy as something you need after a torn ligament, a joint replacement, or a morning when you wake up and can't turn your head. Physical therapists are very good at helping with those things. But treating injuries is only half of what we do. Physical therapy is also one of the most effective, yet underused, tools in preventive health care. A physical therapist can help you move better, lower your risk of chronic disease, and protect your strength and independence for decades to come. Exercise Is the Most Powerful Medicine You Don't Need a Prescription For We all know exercise is good for us, but it's easy to underestimate how good it is. Researchers have called exercise "the real polypill" because no single medication benefits as many systems of the body at once. If physical activity could be packaged into a pill, it would be the most prescribed drug in the world. Regular physical activity: Supports mood and mental health. A large 2023 review of nearly 100 systematic reviews found that physical activity meaningfully reduces symptoms of depression, anxiety, and psychological distress across a wide range of adults. Lowers your risk of chronic disease. Being active reduces the risk of heart disease, stroke, high blood pressure, and type 2 diabetes. In a study of 1.44 million adults, higher leisure-time activity was linked to a lower risk of 13 different types of cancer. Helps protect you from serious illness. In a study of more than 65,000 adults whose activity was directly measured, people who got regular moderate activity were less likely to be hospitalized, admitted to intensive care, or die from COVID-19. Protects your brain. In the long-running Framingham Heart Study, adults who were most active in midlife (ages 45 to 64) had a 41% lower risk of dementia, and those most active later in life (ages 65 to 88) had a 45% lower risk, compared with the least active. Improves metabolic health and sleep. Regular activity improves insulin sensitivity (how well your body uses insulin to manage blood sugar), lowers blood pressure, and improves sleep quality. Yet according to the CDC, fewer than 1 in 4 American adults meet the federal guidelines for both aerobic and muscle-strengthening activity. That means at least 150 minutes of moderate aerobic activity per week, plus strength training at least two days per week. Why is that? For many people, moving regularly hurts, feels overwhelming, or simply doesn't fit into everyday life. That's where your physical therapist comes in. How a Physical Therapist Helps You Stay Active for Life To stay active, you first need to move comfortably and with confidence. Physical therapists are doctoral-trained experts in the human movement system. A thorough PT evaluation looks at how your whole body moves, not just where it hurts. From there, your PT can: Find and address the root causes of pain, stiffness, or recurring injuries Improve your strength, mobility, and balance Build an exercise plan that fits your body, your goals, and your schedule Your PT can also work alongside the rest of your health care team. If your physician has encouraged you to lower your blood pressure, improve your cholesterol, or bring down your HbA1c (a blood test that reflects your average blood sugar over about three months), your PT can design an exercise prescription that supports those goals safely, even if you're working around joint pain or a past injury. Think of Your PT the Way You Think of Your Dentist You don't wait for a toothache to see your dentist. Your movement health deserves the same kind of regular attention. A physical therapist can be your go-to for regular movement screenings, program updates as your goals change, and early attention to small aches before they become real injuries. As your body changes across the decades, or as your life shifts from training for 10Ks to keeping up with your grandkids, your PT can help you stay pain-free, capable, and healthy. Aging is inevitable. Losing your mobility, strength, and independence doesn't have to be. Frequently Asked Questions Do I need to be injured to see a physical therapist? No. Many people see a PT to get stronger, move better, start a new activity safely, or reduce their risk of future injury. Is preventive physical therapy only for older adults? Not at all. Runners, lifters, weekend athletes, and busy professionals all benefit from having a movement expert in their corner. The earlier you build healthy movement habits, the longer they pay off. What happens at a preventive PT visit? Your PT will review your health history and goals, assess how you move, and look at strength, mobility, and balance. You'll leave with a clear plan tailored to you. Your Movement Coach and Lifelong Partner You don't have to wait for pain to see a physical therapist. Whether you want to run your first 5K, get back in the gym safely, or stay strong and independent for years to come, your PT can help you get there. At Tualatin Valley Physical Therapy, every session is one-on-one care with a Doctor of Physical Therapy, focused on helping active people recover and perform better. We're here to remove every barrier between you and the healthy, active life you deserve. If you’re ready to see what physical therapy can do for you, call us at (971) 238-5755. This National PT Month, invest in your future self. You don't have to wait for pain to see a physical therapist. References Fiuza-Luces C, Garatachea N, Berger NA, Lucia A. Exercise is the real polypill. Physiology (Bethesda). 2013;28(5):330-358. Singh B, Olds T, Curtis R, et al. Effectiveness of physical activity interventions for improving depression, anxiety and distress: an overview of systematic reviews. Br J Sports Med. 2023;57(18):1203-1209. Moore SC, Lee IM, Weiderpass E, et al. Association of leisure-time physical activity with risk of 26 types of cancer in 1.44 million adults. JAMA Intern Med. 2016;176(6):816-825. Steenkamp L, Saggers RT, Bandini R, et al. Small steps, strong shield: directly measured, moderate physical activity in 65,361 adults is associated with significant protective effects from severe COVID-19 outcomes. Br J Sports Med. 2022;56(10):568-576. https://bjsm.bmj.com/content/56/10/568 Marino FR, Lyu C, Li Y, et al. Physical activity over the adult life course and risk of dementia in the Framingham Heart Study. JAMA Netw Open. 2025;8(11):e2544439. https://doi.org/10.1001/jamanetworkopen.2025.44439 2018 Physical Activity Guidelines Advisory Committee. 2018 Physical Activity Guidelines Advisory Committee Scientific Report. Washington, DC: U.S. Department of Health and Human Services; 2018. Centers for Disease Control and Prevention. QuickStats: Percentage of adults aged ≥25 years who met the 2018 federal physical activity guidelines for both muscle-strengthening and aerobic physical activity, by educational attainment. MMWR Morb Mortal Wkly Rep. 2024;73(22):521. https://www.cdc.gov/mmwr/volumes/73/wr/pdfs/mm7322a3-H.pdf Centers for Disease Control and Prevention. Physical activity guidelines for adults. https://www.cdc.gov/physical-activity-basics/guidelines/adults.html
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