Published on:
5/11/2025

Your Body Isn't Broken: Build Confidence Through Training

Transform from limitation-focused to capability-focused thinking. Discover how our clients build physical confidence through systematic strength training.
Mathias Busk Personal Trainer and Physiotherapist at Nordic Performance Training Copenhagen

Written by Mathias Busk - Personal Trainer and Physiotherapist

Kasper Vinther Personal Trainer and Physiotherapist at Nordic Performance Training CopenhagenLucas Iversen Personal Trainer and Physiotherapist at Nordic Performance Training Copenhagen

Reviewed by Kasper Vinther & Lucas Iversen - Personal Trainers and Physiotherapists

Your Body Isn't Broken: How to Rebuild Trust in What You're Capable Of

The complete guide to transforming from limitation-focused thinking to capability-focused living through intelligent strength training

Christian walked into our Private Gym in Copenhagen carrying more than just a gym bag. He carried 7 years of low back pain, three different diagnoses from various specialists, and a thick folder of "corrective" exercises that had left him feeling more fragile than ever.

"I've been told I have a herniated disc, some degenerative changes, and my pelvis is apparently unstable," he said during our first conversation. "Every healthcare provider has given me something else I'm supposedly not allowed to do. I'm 34 years old, and I feel like my body is already broken."

We've had over 50,000 training sessions in Nordic Performance Training across 8 years of coaching in our Private Gym in Copenhagen, and identified an unfortunate pattern: the people who struggle most with building strength aren't those with the worst physical limitations — they're those who've been taught to see themselves as fundamentally fragile.

Christian represents one of many — a very capable person who've been convinced they're incapable. Not because of what their bodies actually can't do, but because of what they've been repeatedly told they shouldn't do or shouldn't expect to be able to do.

This is the story of how Christian — and hundreds of clients like him — discovered that their bodies weren't broken. Their relationship with their bodies was.

When a Random Diagnosis Becomes Your Identity

In Denmark's excellent healthcare system, diagnostic precision is considered a virtue. But there's an unintended consequence: many people leave medical appointments with a new identity based on their limitations rather than their capabilities.

Think about how language shapes identity in Copenhagen's professional work culture. When you introduce yourself as "a senior consultant" or "a lead developer," that label influences what challenges you're willing to take on and what you believe you can achieve.

The same psychological mechanism applies to medical labels. When someone repeatedly hears "you have a bad back" or "your knees are wearing out," those labels become part of their core identity.

Our experience after having over 3,000 clients through our private gym reveals how diagnostic language shapes self-perception among Copenhagen professionals:

Common limitation-focused statements:

  • "I don't think I can do that because of my back problems"
  • "My doctor said I need to be very careful"
  • "I have bad knees/shoulders/whatever"
  • "I'm just not built for running apparently"
  • "My body is falling apart as I get older"

The psychological impact is significant: People who organize their identity around physical limitations consistently show lower exercise adherence and higher anxiety around physical activity compared to those who maintain capability-focused language.

But here's what's fascinating: when we analyze the actual physical capabilities of these clients, most can do far more than they believe they can.

The Fear-Avoidance Spiral: Emma's Story

Emma, a 31-year-old psychologist from Sydhavn, perfectly illustrates how diagnostic labeling creates psychological limitation that exceeds physical limitation.

After many years with pain between her shoulder blades an MRI revealed a very minor scoliosis ~10° (very common), Emma was told to be careful of her spine and to start yoga, pilates and home-exercising with light resistance bands and she became hyperfocused about her spine. She bought expensive ergonomic equipment (expensive office chairs and such), avoided lifting anything over 5kg, and stopped all recreational activities like running, paddle and tennis which she loved.

"I thought I was being responsible," Emma told us. "But I was actually becoming weaker and more anxious."

The fear-avoidance cycle in action:

  1. Diagnostic labeling created awareness of structural "problems"
  2. Fear of making things worse led to systematic activity avoidance
  3. Physical deconditioning from reduced activity increased actual vulnerability
  4. Increased symptoms from weakness confirmed the original fear
  5. Greater avoidance completed the downward spiral

The cruel irony: Emma was creating the very fragility she was trying to prevent.

When Emma first came to us, she could barely perform 6 reps of Hack Squat (no added weight on machine) without shaking excessively and when performing a Machine Chest Press she was struggling with 10kg and here the average for a woman with her age and training experience would be ~20kg (based on our own client data). Her "scoliosis" had created genuine weakness — not because of structural findings, but because of 4 years of fear-based deconditioning.

Your Mind Shapes Your Physical Reality

Here is what neuroscience and our extensive experience tell us: Your brain operates like a sophisticated risk-management CEO, constantly making predictions about what your body can handle safely. Your expectations about your body's capabilities literally influence your body's performance at the cellular level.

Think of your muscles like a well-organized company: your brain is the CEO, motor units are department managers, and muscle fibers are the workers.

Some workers (slow-twitch fibers) are like reliable office staff—always available, good for routine tasks, but limited growth potential. Others (fast-twitch fibers) are like your top specialists—incredibly powerful, with real growth potential, but expensive to activate and selective about when they work.

When your CEO brain is focused on preventing catastrophe, it makes conservative hiring decisions. Instead of recruiting your strongest workers (fast-twitch muscle fibers), it defaults to whoever feels "safe"—usually your weakest, most limited workers.

When your brain predicts danger, it preemptively limits muscle recruitment, coordination, and pain tolerance. When it predicts capability, it authorizes access to your full physical potential.

The Research Foundation

Dr. Peter O'Sullivan's landmark research followed over 1,500 people with back pain for five years. The strongest predictor of long-term outcomes wasn't MRI findings or diagnoses—it was people's beliefs about their ability to recover.

Key findings:

  • People who maintained activity despite pain had better outcomes than those who avoided activity
  • Beliefs about the meaning of pain were more predictive than pain intensity
  • Fear-avoidance behaviors created more disability than the original injury

Sports psychology research consistently shows that athletes' expectations influence their actual performance through measurable mechanisms: enhanced motor unit recruitment, improved pain tolerance, and better recovery.

Your brain's predictions about your capabilities become your body's reality.

Case Study: Elisabeth Was Stronger Than She Thought

Elisabeth, a 41-year-old dentist, came to us convinced she just wasn't made for strength training. Three previous failed attempts with strength training had reinforced her belief that she "wasn't made for building muscle and strength".

First session: Machine Chest Press 15kg, Cable Pulldown 25kg, and Hack Squat 20kg — these numbers were actually very normal for a woman her age and training experience.

Our systematic intervention focused on positive capability building:

Months 1–3: Basic movement competency with appropriate intensity, weekly tracking of improvements, and replacement of perceived limitations with positive capability language.

Months 3–9: Systematic strength development through structured progression.

Months 9–12: Identity transformation, as Elisabeth began describing herself as "someone who's strong and works out twice per week."

12-Month Strength Progress:

  • Hack Squat: 20kg → 42.5kg (+112.5%)
  • Machine Chest Press: 15kg → 25kg (+66.7%)
  • Cable Pulldown: 25kg → 42kg (+68%)

Elisabeth's identity shifted from "weaker than average" to "someone who's strong and capable."

Her physical strength was actually very normal — it was just interpreted through limiting beliefs. Working with an optimistic, experienced personal trainer helped her stop seeing herself as below average and fostered a sense of belonging in the gym.

This illustrates a crucial principle: your mindset determines how effectively you perform — especially with the support of a positive personal trainer who wants to see you succeed.

Do you also feel like you're “not made” for strength training? Try a simple approach with one of the free programs in our Full Body guide.

Focus on What Your Body Can Do

The antidote to limitation-based thinking isn't denial of real constraints. It's a fundamental shift from organizing your life around what you can't do to systematically building on top of what you can do right now.

The Garden Metaphor

Think of your body like a garden:

Problem-focused approach: Spend all your energy identifying dying plants, logging deficiencies, and worrying about potential problems.

Capability-focused approach: Focus on nurturing what's healthy, providing optimal growing conditions, and building resilience through appropriate challenge.

Both acknowledge reality, but they create completely different outcomes. The capability-focused gardener creates conditions for flourishing.

The same principle applies to physical development. When Christian first came to us, 100% of his energy was organized around protecting his "herniated disc." Every movement was filtered through: "Will this make my back worse?"

We helped him shift to: "How can we help your back become stronger and more resilient over time?"

This wasn't just motivational speaking. This shift led to measurable changes in how his nervous system coordinated movement, how much strength he could access, and how he felt about his body's potential.

The Neuroplasticity Advantage

One of the most empowering discoveries in neuroscience is neuroplasticity — your brain's ability to reorganize and create new neural pathways throughout your life.

The neural patterns that currently limit your physical confidence aren't permanent. They're simply your nervous system's current organization based on experiences so far.

Every positive physical experience creates new neural pathways that support increased confidence. But neuroplasticity responds to consistency and systematic progression, not random positive experiences.

Case Study: Jessica's Transformation

Jessica, a 37-year-old lawyer, came to us convinced she was "just not athletic" after years of failed gym attempts and shoulder problems that "always acted up."

Instead of complex shoulder rehabilitation, we started with one achievable goal: help Jessica successfully complete two Full Body sessions per week.

The 12-week progression in the Machine Chest Press:

  • Week 1: 20kg × 6, 6, 6 reps ("This feels easy but I can feel a little bit in my shoulder")
  • Week 4: 20kg × 8, 8, 8 reps ("It's still easy, but I'm getting stronger and my shoulder feels better")
  • Week 8: 25kg × 6, 6, 6 reps ("To be honest, I haven't thought about my shoulder in weeks")
  • Week 12: 25kg × 8, 7, 7 reps ("I can't believe this is the same shoulder")

The transformation: 25% increase in weight lifted, 52.8% increase in total training volume (when factoring in repetitions). As physiotherapists, this is a strong indication of shoulder health improvement.

The transfer effect: By month 6, Jessica had started bouldering and was planning a cycling trip across Sweden. Her shoulder hadn't been "fixed" — it just got stronger, and her relationship with her shoulder had been rebuilt through systematic positive experiences.

Each successful session provided Jessica's brain with undeniable evidence of expanding capability, literally rewiring her expectations about what her body could handle.

Words That Build vs. Words That Limit

Language shapes reality in measurable ways. The words you use to describe your physical experience literally influence your nervous system's response to movement and challenge.

Victim vs. Hero Narrative

Limitation language creates a victim narrative:

  • "My back is hurting again"
  • "I can't do that because of my condition"
  • "My body is falling apart"

Capability language creates a hero narrative:

  • "My back is getting stronger every week"
  • "I'm learning what my body can handle"
  • "My body is adapting and improving"
Limitation-Focused Language Capability-Focused Language
“My back is hurting again.” “My back is getting stronger every week.”
“I can’t do that because of my condition.” “I’m learning what my body can handle.”
“My body is falling apart.” “My body is adapting and improving.”
“I have bad knees, so I avoid squats.” “I’m working with experts to strengthen my knees.”

This isn't about denying problems — it's about organizing your identity around your growing capabilities rather than your current constraints.

Before capability focus: "I have three herniated discs, so I can't lift weights." After capability focus: "I'm working with professionals to build strength that works with my back's needs."

Your language changes don't just affect your psychology—they influence how others interact with you around physical activities. When you consistently use limitation language, people become protective. When you use capability language, people see you as someone who's growing stronger.

From Fragile to Antifragile

Antifragile systems don't just resist stress — they become stronger because of it. This concept is crucial for building physical confidence. Understanding how progressive challenge works psychologically is the key to transformation.

The Psychology of Progressive Challenge

Client performing seated leg curls during a period of back pain, demonstrating how machine-based strength training allows safe, consistent progress without worsening symptoms.

Antifragile systems don't just resist stress—they become stronger because of it. This concept is crucial for building physical confidence:

  • Fragile systems break under stress (systematic avoidance)
  • Robust systems maintain function under stress (handle normal demands)
  • Antifragile systems become stronger because of stress (seek appropriate challenge)

The Professional Parallel

Copenhagen professionals understand stress exposure intuitively. You don't become a successful professional by avoiding difficult conversations — you build skill through systematic exposure to appropriate challenges.

Your body develops resilience through the same process. You become physically antifragile by systematically taking on progressive challenges in a controlled environment.

Case Study: Jesper's Transformation from Fragile to Antifragile

System Type Response to Stress Example in Training
Fragile Breaks down under stress Avoids all challenge → becomes weaker over time
Robust Tolerates stress without change Maintains current capacity but doesn’t grow
Antifragile Becomes stronger because of exposure to stress Seeks appropriate challenge → builds strength, confidence, and empowerment

Jesper, a 43-year-old architect, had avoided all physical activity for 7 years following a shoulder surgery. His comprehensive protection strategy had made his shoulder genuinely weak and vulnerable.

The antifragile intervention: Instead of more protection, we implemented systematic capability building.

The progression:

  • Months 1-2: Machine Chest Press 40kg → 60kg, building basic confidence
  • Months 3-9: Switching to Dumbbell Chest Press 20kg → 30kg, proving his shoulder could handle more challenging exercises
  • Months 9-12: Integration with real activities, return to paddle tennis with his colleagues.

The Transformation:

  • 50% increase in Machine Chest Press weight (40kg → 60kg) during the first 2 months, building basic confidence
  • 50% increase in Dumbbell Chest Press weight (20kg → 30kg) from months 3 to 9, proving his shoulder could handle more challenging exercises
  • By months 9–12, integration with recreational sport activities was achieved, including a return to paddle tennis with his colleagues, demonstrating practical shoulder function improvement

The key insight: Jesper built antifragile shoulder health by systematically exposing his shoulder to progressive stress, not by avoiding challenge. His shoulder became objectively stronger and more resilient than before the original incident.

Do you want professional guidance for your training? Read our article How to Choose the Right Personal Trainer — it includes 5 important questions to ask your potential trainer and 5 red flags to watch out for.

The Nordic Approach

Building genuine confidence requires distinguishing between:

  • Intelligent caution vs. Paralyzing fear
  • Appropriate modification vs. Complete avoidance
  • Systematic progression vs. Reckless escalation

Apply the same analytical thinking you use professionally to physical development:

Risk Assessment: What are the actual risks of systematic, professionally-guided strength training vs. continued deconditioning and fear-based avoidance?

Opportunity Cost: What capabilities and confidence am I missing by organizing my life around limitations?

Expected Value: What's the likely outcome of building systematic strength vs. continuing to manage constraints?

Professional Guidance: Just as you consult experts for business decisions, are you working with qualified professionals for physical and mental development?

The Nordic Performance Training Method

Our approach follows proven principles:

Clear, measurable objectives with specific targets like "Hack Squat 60kg for 3 sets of 8 reps."

Systematic progression frameworks using our double progression method that builds both strength and confidence simultaneously.

Professional oversight that distinguishes between appropriate challenge and reckless risk.

Integration with your lifestyle that enhances, rather than competes with, your professional demands.

We use machine-based training because it provides external stability, allowing you to focus your mental energy on feeling strong rather than worrying about balance or technique. This creates optimal conditions for psychological development alongside physical capability building.

If you want the exact structure we use — A/B/C/D exercise pairings, 6–8 reps, 2-minute rests, and double progression — click here for the full blueprint with 1x, 2x, and 3x weekly options.

Case Study: Susan's Journey from Fear to Confidence

Client performing a heavy split squat after gradual progression, illustrating how structured strength training builds strength, confidence, and long-term empowerment.

Susan, a 57-year-old engineer, had avoided all physical activity for three years following a vertebral fracture from a bike accident. Despite complete medical clearance, she remained terrified of any spinal loading.

Her fear-avoidance had become so severe that she avoided lifting "heavy" groceries, playing with her small grandchildren, and walking on uneven surfaces like cobble roads.

The systematic intervention:

  • Phase 1 (months 1–3): Building movement confidence with minimal spinal load (Split Squat: Bodyweight → 12kg kettlebell + Lying Leg Curl 7.5kg → 12.5kg)
  • Phase 2 (months 3–9): Progressive spinal loading (Hack Squat: 20kg → 35kg + Lying Leg Curl 12.5kg → 17.5kg)
  • Phase 3 (months 9–12): Functional integration with real-world activities (Susan started running again after a 12-year break and feels younger and more athletic again)

The 12-month transformation: From being unable to lift a 2–3kg bag to completing hack squats with 35kg+. More importantly, her identity shifted from "someone with a broken back" to "someone with a strong, resilient spine," feeling younger and more athletic again.

Susan now moves and travels confidently and describes her spine as "strong and reliable" rather than "fragile."

The insight: Susan's transformation required both physical reconditioning and systematic exposure to movement-related fear. Neither component alone would have created complete change.

Are you between 50 and 70 and not sure where to start? Read our article Strength Training After 60 — and discover why it’s never too late to get strong.

How Gym Confidence Translates to Real Life Confidence

Physical confidence must transfer from the controlled gym environment to the unpredictable demands of everyday life. This transfer requires intentional integration.

The Transfer Principles

Explicitly connect gym strength to real-world capabilities. Recognize how increased strength in Hack Squats, Leg Curls, Chest Press, and Cable Pulldowns applies to everyday activities such as carrying luggage, lifting children, or cycling Copenhagen's bridges in headwind.

Practice bridge activities. Actively use your growing strength in meaningful contexts—weekend hikes, home projects, recreational activities, or sports.

Update identity language across all areas. Start describing yourself as "someone who's getting stronger" in contexts beyond gym conversations.

Share your progress and mentor others. Teaching capability development helps solidify your own confidence while expanding your identity as a physically capable person.

As strength becomes simple, effective, and time-efficient, many clients find they finally have the energy and desire to add more movement — like running. If that’s your next step, start here: [Your Ultimate Guide to Running a Fast 5km – For All Levels].

The Compound Effect

When physical confidence transfers effectively, it creates reinforcing cycles:

Physical confidence → Professional confidence: The discipline and systematic progression you learn through strength training often enhance your approach to career challenges and skill development.

Body trust → Decision-making confidence: When you trust your body's capabilities, you often become more confident in your overall judgment and ability to handle life's challenges.

Strength identity → Growth mindset: Seeing yourself as someone who builds physical capabilities often translates to believing you can systematically develop abilities in any area.

Case Study: Anne's Complete Life Transformation

Anne, a 43-year-old accountant who's been struggling with neck pain most of her adult life, had organized her entire life around conserving her energy and managing her limitations.

The limitation spillover:

  • Professional: Turned down challenging projects due to energy concerns related to neck pain and headaches.
  • Social: Avoided any physical activities
  • Personal: Stopped pursuing interests that seemed "too demanding"
  • Identity: "Someone who can't handle what normal people can handle"

The strength training intervention and results:

  • Physical improvements: Dumbbell Lateral Raise 1kg → 5kg (400% increase), Cable Pulldown 25kg → 45kg (80% increase)
  • Professional expansion: Accepted a job promotion previously considered "too stressful," began leading challenging client projects
  • Personal enrichment: Resumed photography with hiking trips, planned international travel
  • Identity transformation: From limitation-focused to "someone who uses strength training to build resilience"

The profound insight: Anne's neck pain was reduced significantly, and her relationship with challenge and her body's capabilities transformed completely. She discovered that controlled physical stress enhanced her condition management rather than worsening symptoms.

The Conversation That Changes Everything

The shift from limitation-focused to capability-focused thinking often begins with conversations and experiences that challenge your fundamental story about your body and potential.

The Old Story vs. The New Story

Old Story: "I have [diagnosis/problem], so I need to be careful, avoid [activities], and accept that my capabilities are limited and declining."

New Story: "I have [current constraints I work with], and I'm systematically building strength, resilience, and confidence to live the life I want within and beyond those current constraints."

The Questions That Create Change

Instead of: "What will happen if I hurt myself or make things worse?"

Ask: "What will happen if I become systematically stronger and more confident?"

Instead of: "What if my diagnosis means I'm too damaged for this?"

Ask: "What version of this activity can I master right now?"

Instead of: "Will this increase my pain or create problems?"

Ask: "How will building strength help me feel more capable in daily life?"

Don't focus too much on your pain — focus on what you can do in spite of it.

The Implementation Roadmap

Months 1-3: Foundation Building

  • Complete language audit of how you describe your body
  • Begin systematic replacement of limitation language with capability language
  • Professional consultation and structured training program initiation
  • Basic movement competency with consistent progress tracking

Months 4-9: Capability Building and Transfer

  • Measurable strength improvements through progressive loading
  • Integration of gym-built strength with real-world activities
  • Identity language expansion beyond fitness into professional and personal areas
  • Sharing your development journey with supportive people

Months 10-12: Mastery and Leadership

  • Advanced strength development with challenging but achievable goals
  • Comprehensive transfer of physical confidence to all life domains
  • Proudly and openly speaking about your expanding capabilities
  • Long-term planning for continued growth and challenge

Why Optimism Makes You Physically Stronger

Research in psychoneuroimmunology and related fields suggests that positive expectations about your capabilities may influence several biological processes:

Enhanced motor unit recruitment: Optimistic individuals may show improved muscle activation, potentially due to increased confidence and reduced fear of movement.

Improved pain tolerance and recovery: Positive expectations have been linked to higher pain thresholds and more effective recovery from both exercise-induced soreness and injury.

Better immune function: Psychological states such as optimism and self-efficacy are associated with more robust immune responses under physical and emotional stress.

Increased neuroplasticity: Hopeful, motivated individuals may engage more deeply in learning, potentially enhancing the brain's ability to adapt and acquire new movement patterns.

When you believe in your body's ability to grow stronger, psychological and physiological systems often work together to support motor learning, recovery, stress resilience, and even sleep quality.

Your beliefs don't replace biology — but they help shape how your biology responds.

Frequently Asked Questions

Can you exercise with a herniated disc?

Yes. Most people with herniated discs benefit from strength training, especially structured strength training. Movement reduces pain and improves long-term outcomes when progressed safely.

Is it safe to lift weights with back pain?

Yes, if done correctly. Weight training with proper technique and progression can reduce back pain by strengthening supporting muscles and improving confidence.

Should I avoid exercise if I have arthritis or joint problems?

No. Avoiding exercise often makes arthritis worse. Strength training with controlled loads helps reduce stiffness, improve strength, and support joint health.

How do I start exercising again after an injury?

Begin with simple, stable movements, low loads, and gradual progression. Focus on consistency and confidence instead of rushing back to pre-injury levels.

Why do I feel fragile after an MRI or diagnosis?

Because medical language can create fear and focus on limitations. In reality, most people can train safely by shifting focus toward what the body can do and building capability.

What’s the difference between soreness and harmful pain?

Soreness is a dull ache in the muscles 24–72 hours after training. Harmful pain is sharp, immediate, or worsening. Learning the difference prevents unnecessary fear of exercise.

Your Capability Revolution Starts Now

Christian recently passed his 12-month mark with us.

His supposedly "unstable pelvis" now supports 110kg hack squats.

His "herniated disc" no longer limits daily activities.

His random diagnoses haven't prevented him from becoming the strongest he's been in over a decade.

But the most important change isn't in his exercise numbers — it's in how he thinks about his body.

"I used to organize my entire life around what I couldn't do," Christian said recently. "Now I organize it around what I'm building toward. Same body, completely different life."

That's the revolutionary power of shifting from limitation-focused to capability-focused thinking.

Your body isn't broken.

Your genetics aren't holding you back.

Your diagnosis isn't a life sentence.

Your age isn't a barrier to strength development.

Your relationship with your body might need some systematic rebuilding — but that's exactly what intelligent strength training provides.

The question isn't whether you have structural variations, previous injuries, or current limitations.

Everyone over 30 has some combination of those factors.

The real question is:

Will you organize your life around your constraints,

or will you systematically build capabilities that work with — and beyond — those constraints?

The people who choose capability-focused thinking don't magically eliminate all physical problems.

But they consistently build stronger, more resilient, more confident relationships with their bodies.

They stop seeing themselves as fragile people managing problems —

and start seeing themselves as strong people building capabilities.

They discover that their bodies weren't broken.

They just needed better programming, professional guidance,

and a completely different conversation about what was possible.

Your capability story starts with your next decision:

Will you focus on what you can't do —

or what you're ready to build?

The people who get strongest aren't those with the fewest problems —

they're those with the best relationship with challenge

and the greatest commitment to discovering what they're truly capable of achieving.

Your body is ready.

Your capability-focused journey begins now.

Ready to start your transformation from limitation-focused to capability-focused living?

Book a free start-up conversation at our Private Gym in Copenhagen. We specialize in helping people build extraordinary capabilities through positive systematic strength training that enhances your lifestyle not competing against it.

Because your body isn't broken. It just needs the right programming and the right conversation about what's possible.

Referencer

Brinjikji, W., Luetmer, P. H., Comstock, B., Bresnahan, B. W., Chen, L. E., Deyo, R. A., Halabi, S., Turner, J. A., Avins, A. L., James, K., Wald, J. T., Kallmes, D. F., & Jarvik, J. G. (2015). Systematic literature review of imaging features of spinal degeneration in asymptomatic populations. American Journal of Neuroradiology, 36(4), 811–816. https://doi.org/10.3174/ajnr.A4173

Foster, N. E., Anema, J. R., Cherkin, D., Chou, R., Cohen, S. P., Gross, D. P., Ferreira, P. H., Fritz, J. M., Koes, B. W., Peul, W., Turner, J. A., Maher, C. G., & Buchbinder, R. (2018). Prevention and treatment of low back pain: Evidence, challenges, and promising directions. The Lancet, 391(10137), 2368–2383. https://doi.org/10.1016/S0140-6736(18)30489-6

Vlaeyen, J. W. S., & Linton, S. J. (2000). Fear-avoidance and its consequences in chronic musculoskeletal pain: A state of the art. Pain, 85(3), 317–332. https://doi.org/10.1016/S0304-3959(99)00242-0

Leeuw, M., Goossens, M. E. J. B., Linton, S. J., Crombez, G., Boersma, K., & Vlaeyen, J. W. S. (2007). The fear-avoidance model of musculoskeletal pain: Current state of scientific evidence. Journal of Behavioral Medicine, 30(1), 77–94. https://doi.org/10.1007/s10865-006-9085-0

O'Keeffe, M., O'Sullivan, P. B., Purtill, H., Bargary, N., O'Sullivan, K., O'Sullivan, L., Dankaerts, W., O'Sullivan, K., & O'Sullivan, P. (2020). Cognitive functional therapy compared with a group-based exercise and education intervention for chronic low back pain: A multicentre randomised controlled trial (RCT). British Journal of Sports Medicine, 54(13), 782–789. https://doi.org/10.1136/bjsports-2019-100780

Kent, P., O'Sullivan, P. B., Caneiro, J. P., Smith, A., Hunter, D. J., Hancock, M. J., & et al. (2023). Effect of cognitive functional therapy with and without movement sensor biofeedback versus usual care on disability in people with chronic low back pain (RESTORE): A pragmatic, multicentre, randomised controlled trial. The Lancet, 401(10389), 1514–1528. https://doi.org/10.1016/S0140-6736(23)00441-5

Louw, A., Zimney, K., Puentedura, E. J., & Diener, I. (2016). The efficacy of pain neuroscience education on musculoskeletal pain: A systematic review of the literature. Physiotherapy Theory and Practice, 32(5), 332–355. https://pubmed.ncbi.nlm.nih.gov/27351541/ 

Colloca, L., Barsky, A. J. (2020). Placebo and nocebo effects. New England Journal of Medicine, 382(6), 554–561. https://doi.org/10.1056/NEJMra1907805

Segerstrom, S. C., & Sephton, S. E. (2010). Optimistic expectancies and cell-mediated immunity: The role of positive affect. Psychological Science, 21(3), 448–455. https://doi.org/10.1177/0956797610362061

Mathias Busk Personal Trainer and Physiotherapist at Nordic Performance Training Copenhagen

Hi, I’m Mathias

Personal Trainer & authorized Physiotherapist at Nordic Performance Training

I’ve worked as a personal trainer and physiotherapist for many years and I bring a calm, professional presence to every session, helping people feel comfortable and confident in the gym no matter their starting point.I help my clients build structure and consistency and the habits that drive real, lasting progress.

My approach is clear, effective, and sustainable, and I have extensive experience helping clients train safe and effectively with pain.

On this blog, I share the same practical methods we use at Nordic every day — so you can train with confidence and keep moving forward.

All blog content is reviewed by certified personal trainers and physiotherapists at Nordic Performance Training to ensure accuracy, relevance, and safety before publication.
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