The Role of Tendons in Running Performance

March 10, 2026

By Weaver Physiotherapy & Sports Injury Clinic – Physio Northwich

Running may look simple from the outside, but it is a highly complex movement that relies on the coordinated function of muscles, joints, bones and tendons. While muscles often receive most of the attention when discussing strength and performance, tendons play a crucial role in how efficiently and powerfully we run.


At Weaver Physiotherapy & Sports Injury Clinic in Northwich, we regularly assess and treat runners with tendon-related problems such as Achilles tendinopathy, patellar tendon pain, plantar fasciitis and proximal hamstring tendinopathy. Understanding how tendons contribute to running performance helps runners not only prevent injury but also improve efficiency, speed and resilience.


In this guide, we explore the science behind tendons, their role in running mechanics, why tendon injuries occur, and how physiotherapy can optimise tendon health and performance.


What Are Tendons?


Tendons are strong connective tissues that attach muscles to bones. Their primary role is to transmit force generated by muscles to the skeleton, allowing movement to occur.


However, tendons are not just passive connectors. They are highly specialised structures capable of storing and releasing energy, which is especially important during running.


Key characteristics of tendons include:

    •    High tensile strength

    •    Elastic energy storage

    •    Load transmission from muscle to bone

    •    Contribution to movement efficiency


During running, tendons behave like biological springs, helping the body move efficiently with minimal energy expenditure.


Why Tendons Are So Important for Running


Running involves repeated stretch–shortening cycles, where muscles and tendons lengthen under load and then rapidly shorten to produce propulsion.


Tendons allow runners to:

    •    Store elastic energy

    •    Release energy during push-off

    •    Improve running economy

    •    Reduce metabolic cost of movement


Without healthy tendons, running becomes less efficient and significantly more physically demanding.


In fact, research shows that a large portion of the energy used during running comes from elastic recoil within tendons rather than purely muscular contraction.


This means that strong, well-conditioned tendons are essential for both performance and injury prevention.


The Spring-Like Function of Tendons


One of the most fascinating aspects of tendon function is their ability to act like springs.


When your foot strikes the ground while running:

    1.    Tendons stretch and store elastic energy

    2.    This stored energy is temporarily held within the tendon

    3.    As the body pushes off, the tendon recoils

    4.    The stored energy helps propel the runner forward


This spring mechanism improves running efficiency, allowing runners to maintain speed with less muscular effort.


The Achilles tendon, for example, is one of the most powerful elastic structures in the human body and plays a huge role in propulsion during running.


Key Tendons Involved in Running


Several tendons play a major role in running mechanics.


Achilles Tendon


The Achilles tendon connects the calf muscles (gastrocnemius and soleus) to the heel bone.


It is responsible for:

    •    transmitting force during push-off

    •    storing elastic energy

    •    contributing to stride efficiency


The Achilles tendon experiences forces up to 6–8 times body weight during running, making it one of the most heavily loaded tendons in the body.


Patellar Tendon


The patellar tendon connects the quadriceps muscle to the shin bone.


It is important for:

    •    knee extension

    •    shock absorption

    •    propulsion


Runners who perform a lot of hill running, sprinting or plyometric activity place high loads on the patellar tendon.


Plantar Fascia


Although technically a thick band of connective tissue rather than a tendon, the plantar fascia also plays a spring-like role.


It helps:

    •    stabilise the arch of the foot

    •    store energy during foot contact

    •    assist propulsion during toe-off


Plantar fascia injuries are common in runners and can significantly affect running mechanics.


Hamstring Tendons


The hamstrings help control hip extension and knee flexion during running.


The proximal hamstring tendon, where the hamstrings attach to the pelvis, can become irritated with high running loads or poor strength.


Tendon Stiffness and Running Performance


An important concept in tendon function is tendon stiffness.


Stiffness refers to the ability of a tendon to resist deformation under load and quickly recoil.


Higher tendon stiffness can improve:

    •    force transfer

    •    running efficiency

    •    sprint performance

    •    energy return


However, tendons must also maintain some elastic flexibility to prevent injury.


Training programmes that include strength training, plyometrics and progressive loading help optimise tendon stiffness and performance.


Why Runners Develop Tendon Injuries


Tendon injuries are extremely common among runners. The majority of these injuries are classified as tendinopathy, which refers to a painful overload condition affecting tendon structure and function.


At Weaver Physio in Northwich, we frequently treat runners with:

    •    Achilles tendinopathy

    •    Patellar tendinopathy

    •    Gluteal tendinopathy

    •    Proximal hamstring tendinopathy

    •    Plantar fasciitis


These conditions typically occur due to excessive or poorly managed loading.


Common Causes of Tendon Problems in Runners


Sudden Increases in Training Load


One of the biggest causes of tendon injury is rapid increases in running volume or intensity.


Examples include:

    •    increasing weekly mileage too quickly

    •    introducing hill running suddenly

    •    starting speed sessions without preparation


Tendons adapt slowly and require gradual progressive loading.


Poor Strength and Conditioning


Weak muscles around the hips, calves and core can increase strain on tendons.


For example:


Weak calf muscles → increased Achilles tendon strain

Weak glutes → increased knee and hip tendon stress


Strength training plays a critical role in protecting tendons from overload.


Biomechanical Factors


Running mechanics can influence tendon loading.


Examples include:

    •    excessive overstriding

    •    poor hip control

    •    reduced ankle mobility

    •    altered foot mechanics


At Weaver Physio, our running gait analysis (Runner’s MOT) helps identify biomechanical factors contributing to injury.


How Physiotherapy Supports Tendon Health


Effective treatment for tendon injuries focuses on restoring tendon capacity and resilience.


At Weaver Physiotherapy & Sports Injury Clinic in Northwich, treatment often includes:


Progressive Strength Loading


Tendons respond positively to controlled mechanical loading.


Rehabilitation programmes often include:

    •    heavy slow resistance training

    •    eccentric exercises

    •    calf strengthening

    •    hip and glute strengthening


These exercises help the tendon adapt and regain strength.


Load Management


Managing running volume is essential.


Runners are often guided through:

    •    structured return-to-running programmes

    •    gradual mileage progression

    •    training load monitoring


This prevents further tendon overload.


Shockwave Therapy


Shockwave therapy can be helpful for chronic tendon conditions that have not responded to other treatments.


This treatment stimulates:

    •    tissue healing

    •    blood flow

    •    collagen production


Shockwave therapy is frequently used at Weaver Physio for Achilles tendinopathy, plantar fasciitis and patellar tendon pain.


Running Gait Analysis


Our Runner’s MOT and gait analysis assessment allows us to evaluate running mechanics in detail.


This helps identify:

    •    stride mechanics

    •    loading patterns

    •    biomechanical inefficiencies


Small changes in technique can significantly reduce tendon stress.


Strength Training for Tendon Performance


Strength training is one of the most effective ways to improve tendon resilience and running performance.


Exercises commonly recommended for runners include:

    •    calf raises

    •    single-leg strength exercises

    •    hip strengthening

    •    plyometric drills

    •    resistance training


These exercises improve:

    •    force production

    •    tendon stiffness

    •    injury resistance


Strong runners are generally more resilient runners.


The Importance of Progressive Loading


Tendons require gradual exposure to load to adapt and become stronger.


This principle is known as progressive loading.


For runners, this means:

    •    gradually increasing mileage

    •    slowly introducing hills or speed work

    •    allowing adequate recovery


Sudden spikes in training load are one of the biggest contributors to tendon injury.


Signs Your Tendons May Be Overloaded


Early symptoms of tendon overload include:

    •    morning stiffness

    •    localised pain during running

    •    discomfort during push-off

    •    pain when pressing on the tendon


Ignoring these early symptoms can allow a minor irritation to develop into chronic tendinopathy.


Early physiotherapy assessment can help prevent long-term issues.


When to See a Physiotherapist


Runners should consider seeing a physiotherapist if they experience:

    •    persistent tendon pain

    •    pain lasting more than 1–2 weeks

    •    reduced running performance

    •    recurring injuries


At Weaver Physio in Northwich, our physiotherapists perform comprehensive assessments to identify the root cause of the problem.


Treatment plans are tailored to the runner’s:

    •    injury history

    •    training load

    •    biomechanics

    •    performance goals


Physio Northwich – Supporting Runners


At Weaver Physiotherapy & Sports Injury Clinic, we specialise in running injuries and tendon rehabilitation.


Our approach combines:

    •    detailed assessment

    •    evidence-based rehabilitation

    •    strength and conditioning

    •    running gait analysis

    •    progressive return-to-running programmes


We treat runners from across:

    •    Northwich

    •    Knutsford

    •    Winsford

    •    Middlewich

    •    Tarporley

    •    Frodsham


Our goal is not only to reduce pain but to build stronger, more resilient runners.


Final Thoughts


Tendons play a fundamental role in running performance, efficiency and injury prevention. Acting like powerful biological springs, they allow runners to move efficiently while storing and releasing energy with each stride.


However, tendons must be progressively loaded and properly conditioned to remain healthy. Sudden increases in training load, poor strength, or biomechanical issues can all lead to tendon overload and injury.


By combining strength training, load management, biomechanical assessment and physiotherapy treatment, runners can protect their tendons and improve their performance.


If you are experiencing tendon pain or a running-related injury, early assessment can make a significant difference.


Book an appointment with Weaver Physiotherapy & Sports Injury Clinic in Northwich today and take the first step towards stronger, more resilient running.


📍 Weaver Physiotherapy & Sports Injury Clinic

110 Middlewich Road, Northwich


📞 Call to book an appointment


🌐 www.weaverphysio.co.uk


#PhysioNorthwich

#WeaverPhysio

#RunningInjuryClinic

#TendonRehabilitation

#AchillesTendon

#RunningPerformance

#SportsPhysio

#NorthwichPhysio

#RunnerInjury

#CheshirePhysio


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Have you ever been told that your running style is “wrong” and immediately wondered whether you need to change it? Advice online can make normal differences in movement look like faults. While certain running habits may be worth exploring—particularly when pain keeps returning—there is no single perfect stride, cadence or foot strike for every runner. At Weaver Physiotherapy & Sports Injury Clinic, we take an individual approach to running technique. Your training history, symptoms, strength, mobility, goals and the way you respond to load all matter. For runners in Northwich, Middlewich, Winsford, Knutsford, Sandbach, Frodsham and Tarporley, our Runner’s MOT and running gait analysis⁠ provides clear, personalised feedback rather than generic rules. What are common running form mistakes? A “running form mistake” is often better described as a movement habit to investigate. A pattern may look unusual without being harmful, and a video alone cannot confirm that it is the cause of pain. Common concerns include: Overstriding – the foot appearing to land well ahead of the body. Upper-body tension – raised shoulders, clenched hands, a tight jaw or stiff arm swing. Forcing foot strike – deliberately trying to run on the forefoot or heel when it feels awkward. Slumped posture – losing trunk control as fatigue develops. Abrupt changes in technique – trying to alter cadence, posture and foot strike at the same time. These patterns can change with pace, hills, footwear, fatigue, confidence and training load. Research has found limited evidence that individual biomechanics alone predict running injury, which is why form should be considered alongside the wider picture rather than treated as a diagnosis. Is there one correct way to run? No. Effective running does not look identical from person to person. Your anatomy, strength, experience, speed, terrain and fatigue level all influence your stride. A single photograph or short clip captures only one moment. It cannot explain how you feel during a run, what your training has involved that week, or whether a movement pattern is actually contributing to symptoms. If you are comfortable, progressing well and free from persistent pain, you may not need to change your technique simply because it differs from someone else’s. The aim is not to chase a “perfect” running style. It is to understand your own movement and make sensible adjustments only when they are relevant to your goals or symptoms. How to assess your running form safely Start with one question. Perhaps your foot feels as though it reaches too far forwards, your shoulders tighten on longer runs, or you notice discomfort appearing as you fatigue. During an easy run at your usual pace, consider: Does your breathing feel relaxed? Are your shoulders, hands and jaw unnecessarily tense? Does your stride feel comfortable and natural? Does your movement alter later in the run? Is there recurring pain during, after or the following day? If you use video, record a brief clip from a safe, consistent position beside the route or on a treadmill. Never hold or watch a phone while running. Footage can be useful for observation, but it should prompt questions—not provide a self-diagnosis. How to change running technique without overdoing it Avoid making dramatic changes based on a social-media tip or a one-size-fits-all rule. A sudden change in cadence, posture or foot strike may feel unnatural and can make it difficult to work out what is helping. Instead: Choose one area to explore. Use one simple cue during an easy run. Keep the adjustment gentle and brief. Notice how it feels during the run and over the next 24–48 hours. Do not introduce several technique changes at once. For example, if you feel tense through the upper body, a helpful cue may be “soft shoulders and easy arms” rather than forcing a rigid posture. 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We look beyond the painful spot to understand the full picture, including: Your symptom history and training or activity levels Previous injuries and treatment Calf strength, ankle mobility and balance Achilles tendon tenderness and loading tolerance Footwear, running surface and recent changes in training volume Hip, knee and foot control where relevant This allows us to confirm whether shockwave therapy is an appropriate option and develop a recovery plan tailored to you. Weaver Physio’s team also provides specialist physiotherapy and sports injury rehabilitation ⁠, so your treatment can be integrated with hands-on care, exercise rehabilitation and return-to-sport planning where needed. What Does a Typical Course Involve? A course of shockwave therapy commonly involves three to five sessions, often spaced about one week apart. The exact number and timing will depend on your presentation, response to treatment and rehabilitation goals. Each appointment is combined with guidance on tendon loading. This may include: Isometric calf exercises for pain management Progressive heel raises and heavy slow resistance work Soleus and gastrocnemius strengthening Balance, control and single-leg stability work A gradual return to running, hills, speed work or plyometric exercise Rather than avoiding all activity, we help you find an appropriate level of movement that keeps the tendon challenged without repeatedly exceeding its current capacity. Is Shockwave Therapy Right for You? Shockwave therapy may be suitable if you have persistent Achilles symptoms that have not settled with sensible activity modification and a targeted rehabilitation programme. It is particularly relevant for people who want a non-invasive option before considering more invasive interventions. However, it is not suitable for everyone. Your physiotherapist will discuss relevant precautions and assess factors such as pregnancy, blood-clotting issues, certain medications, recent steroid injection near the treatment area, suspected rupture or other medical considerations. It is also important to seek urgent medical advice if you experience a sudden pop in the back of the ankle, immediate weakness when pushing off, marked bruising or an inability to rise onto your toes. These can be warning signs of an Achilles rupture. Why Choose Weaver Physio? Weaver Physiotherapy & Sports Injury Clinic combines clinical assessment with a practical understanding of sport, training and everyday activity. We are based in Northwich and regularly support patients travelling from Knutsford, Alderley Edge, Holmes Chapel, Middlewich and across Cheshire. Our approach is built around three principles: Accurate assessment We identify the likely driver of your Achilles pain rather than treating every heel problem the same way. 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The feeling is similar to firm tapping against the skin, and the intensity can be adjusted throughout treatment. Mild soreness, redness or tenderness can occur afterwards and usually settles within a few days. How many sessions will I need? Many patients have a course of three to five sessions, usually one week apart. Your clinician will recommend an appropriate plan based on your symptoms, tendon presentation and response to treatment. Can I exercise after shockwave therapy? Light daily activity is usually encouraged, but your clinician may advise avoiding high-impact exercise—such as running, jumping or hard hill work—for a short period after treatment. You will be given clear guidance on what to continue, reduce and progress. Will shockwave therapy cure my Achilles pain? No treatment can guarantee a cure. 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