The Role of Proper Biomechanics for Cyclists and Runners

For those who practice endurance sports such as cycling and running, biomechanics are crucial to minimize the impact of repetitions on joints and muscles. In these sports, repeating the same movement thousands of times exposes the body to wear and tear. An incorrect position can quickly lead to overloading of joints and muscles, with a consequent risk of tendonitis, inflammation and chronic pain. On the other hand, a correct posture improves the distribution of forces and facilitates movement, allowing for greater efficiency.

1. Bike Setup

The bike setup is essential to avoid incorrect postures and compensations that, over time, lead to injuries. The main components to adjust are:

• Saddle height : A saddle that is too high forces the cyclist to hyperextend the knees, with the risk of tendon inflammation and pain behind the knee, as I have personally experienced. On the contrary, a saddle that is too low can limit the extension of the leg, causing an overload on the quadriceps and increasing the risk of muscle fatigue and knee pain.
• Saddle advancement and setback : Setting the saddle too far forward leads to a posture that overloads the knee, while too little advancement reduces pedaling efficiency and engagement of the posterior muscles. A good place to start is the “knee stand” method, where the knee is aligned with the pedal axis.
• Saddle-to-handlebar distance : A correct distance between the saddle and the handlebars allows you to assume a relaxed posture, keeping your back slightly inclined. If this distance is incorrect, you risk problems with your back, neck and shoulders. For example, a position that is too far forward leads to an overload on the arms and limits breathing, while a position that is too far back forces the cyclist to lean forward.

Personal experience : Due to incorrect measurements, I developed pain behind my knee, which I discovered was due to an incorrect fit. Thanks to a professional, I adjusted the saddle and the handlebars, obtaining immediate greater comfort.

2. Aligning the Pedals and Shoes

Pedal alignment has a significant impact on the entire kinetic chain, from the foot to the knees, hips, and back. Pedals with adjustable angles help you find the right angle and reduce joint stress. The stiffness of the sole of your cycling shoe is also crucial: shoes with a stiff sole allow you to transfer more power to the pedals, reducing the risk of unwanted twisting.

3. Pedaling Technique and Force Distribution

Efficient pedaling is essential to evenly distribute force and improve performance. Common mistakes include applying force only in the downward phase (without involving the upward phase) or a jerky movement. A rounded pedaling, with a harmonious distribution throughout the entire rotation of the pedal, allows you to reduce the loads on the muscles and increases efficiency.

1. Posture and Alignment While Running

Proper running posture is a combination of factors: a slightly forward-leaning torso, a fixed gaze, relaxed shoulders, and naturally swinging arms. A torso that is too leaned forward can lead to back pain, while one that is too upright limits speed and efficiency. A balanced posture helps distribute weight evenly and avoid damaging impacts on the knees.

2. Choosing Shoes and Drop

The drop is the difference between the height of the heel and the height of the forefoot of the shoe. Zero-drop shoes, which I am used to, favor a more natural run with a support on the forefoot, but require well-trained muscles, especially in the calves. A high drop, on the other hand, facilitates a heel support but can overload the joints and make the movement less fluid.

3. Foot Support Technique

Foot strike is a fundamental aspect of running biomechanics. There are three main types:

• Heel strike : More common among beginners, this type of strike generates high impacts and can overload the knees and hips.
• Midfoot strike : Distributes weight better and reduces impact, but requires some muscle strength.
• Forefoot strike : Used by more experienced athletes, it allows for a more dynamic and reactive run but is tiring for the posterior muscles and calves.

1. Biomechanical Analysis by a Professional

A professional biomechanical assessment can identify subtle misalignments that lead to pain and fatigue. In my experience, a professional corrected small errors in my posture on the bike, immediately improving the fluidity of my pedal stroke.

2. Muscle Strengthening and Mobility Exercises

Targeted core, gluteal, and hamstring exercises stabilize the body and reduce the risk of compensation. Additionally, joint mobility exercises (such as dynamic stretching and hip mobilization) improve biomechanics, allowing for greater range of motion and reducing tension.

3. Choosing the Right Equipment

Investing in quality equipment that is suited to your physical structure can make a difference. For cycling, the right saddle and adequate pedals can eliminate discomfort and improve efficiency. In running, choosing the right shoes – both for drop and support – helps to avoid overload and improve the naturalness of the movement.

Proper biomechanics in cycling and running requires attention to detail, knowledge of your needs, and sometimes the help of an expert. Optimizing your bike setup, choosing the right shoes, and maintaining a balanced posture while running are strategies that can improve performance and prevent chronic pain. For anyone who wants to avoid pain and improve their sports experience, good biomechanics is the first step toward a healthy and sustainable practice.