Photobiomodulation for Sports Recovery

Harnessing Light for Recovery

Photobiomodulation uses specific wavelengths of red and near-infrared light to trigger biological responses at the cellular level. Discover how it works and why I incorporate it into selected recovery protocols.

Light → cells → biological signalling → adaptation

PBM in a Nutshell

Photobiomodulation involves exposing an area of the body to light with precisely defined parameters, including wavelength, irradiance, distance, exposure time, and energy dose.

Some of this light is reflected by the skin, while some penetrates into the tissues.

Certain photons can then be absorbed by cellular molecules that are able to respond to light.This interaction can trigger a series of biological responses and temporarily influence certain cellular processes.

Understand the mechanism at a glance

Photobiomodulation works through a sequence of steps: light reaches the tissues, some photons are absorbed, and several cellular mechanisms can then be modulated.

The mechanisms underlying photobiomodulation are complex and likely involve more than a single pathway. Mitochondria and cytochrome c oxidase are among the most extensively studied mechanisms.

1 - Light reaches the tissues

Not all wavelengths behave in the same way within the body.

Red light is generally absorbed more strongly in superficial tissues, while certain near-infrared wavelengths can penetrate more deeply.

When light reaches the skin, some of it is reflected, some is absorbed, and some is scattered through the tissues.

The amount of light actually delivered depends in particular on:

2 - Cells absorb some of this light

Once within the tissues, some photons can be absorbed by molecules that are able to respond to light.

These molecules are sometimes referred to as photoacceptors.

When they absorb light energy, their activity can be modulated.

One of the most extensively studied structures in photobiomodulation is the mitochondrion, although other mechanisms and photoacceptors are also being investigated.

3 - The Mitochondrion: a key player

Mitochondria produce much of the energy used by our cells.

This energy is produced in particular in the form of ATP, or adenosine triphosphate.

Within the mitochondria is a series of reactions known as the respiratory chain.

One of its components, cytochrome c oxidase, is frequently cited as one of the photoacceptors involved in photobiomodulation.

4 - What happens next inside the cell ?

ATP

Mitochondrial activity and ATP production can be modulated. ATP is an essential source of energy for cells.

Nitric Oxide — NO

Nitric oxide plays a role in cellular signalling and vascular regulation.

ROS

Reactive oxygen species also act as cellular messengers when present at controlled levels.

Calcium — Ca²⁺

Intracellular calcium is involved in many functions, including muscle contraction and cellular signalling.

5 - From light to biological response

The changes triggered within the cell can then activate different signalling pathways.

These pathways allow cells to modify their behaviour and respond to their environment.

They may influence mechanisms associated with:

Why Use PBM for Sports Recovery ?

Intense training or competition places significant demands on the body.

After exercise, the body must notably manage:

neuromuscular fatigue
mechanical stress
metabolic disturbances
exercise-induced inflammatory processes
tissue remodelling
restoration of energy capacity

Photobiomodulation is being studied for its potential influence on several of these mechanisms, including muscle function, fatigue, and certain aspects of post-exercise recovery.

However, it should be considered a complementary tool, not a technique capable of instantly reversing the effects of training.

More Light Isn’t Necessarily Better

Photobiomodulation does not follow the principle that “more power means greater effectiveness."

The biological response depends on the combination of several parameters.

Wavelength

It influences how light is absorbed and how deeply it penetrates into the tissues.

Irradiance

It refers to the light power received per unit area, usually expressed in mW/cm².

Distance

Changing the distance between the panel and the body can alter the irradiance actually received.

Duration

Exposure time directly influences the total amount of energy delivered.

Dose

Energy dose is generally expressed in J/cm².

Treatment Area

The size and depth of the targeted tissues must also be taken into account.

Energy dose (J/cm²) = irradiance (W/cm²) × exposure time (seconds)

Why Combine Photobiomodulation and Massage?

Photobiomodulation and massage work in different ways.

Massage primarily provides a mechanical and sensory stimulus, while photobiomodulation provides a light-based stimulus that may modulate certain cellular mechanisms.

Combining the two therefore makes it possible to integrate complementary approaches within a broader recovery strategy.

Photobiomodulation in Combat Recovery 360

Combat Recovery 360 is a recovery protocol designed for combat sports practitioners.
It combines several complementary approaches.

Fascial Work

Targeted work on tissues and areas requiring particular attention.

Targeted Massage

Intervention tailored to the muscle groups most heavily used by the athlete.

Stretching & Mobilisation

Mobility work tailored to the needs identified during the session.

Photobiomodulation

Addition of a light-based stimulus intended to modulate certain cellular mechanisms involved in the body’s response to exercise.

Optimised Positioning

A focus on comfort and appropriate positioning throughout the session.

The goal is not to seek a miracle technique, but to bring together several complementary tools within a coherent recovery strategy.

What Does a PBM Session Feel Like ?

Photobiomodulation is generally painless and non-invasive.

The target area is exposed to light for a duration defined by the protocol.

Depending on the device, power level, and distance, a mild sensation of warmth may be felt.However, this warmth is not the primary mechanism being targeted.

Why Isn’t a Higher Dose Necessarily Better ?

Photobiomodulation is often described as producing a biphasic response.

A dose that is too low may not produce the desired effect, while a much higher dose is not necessarily more effective.

There may therefore be an optimal stimulation window depending on the tissue, the intended goal, and the protocol used.

A Complementary Tool, Not a Universal Solution

Photobiomodulation is the subject of extensive scientific research, but not all of its applications are supported by the same level of evidence.

Results can vary depending on the protocol, device, population studied, treatment area, and intended goal.

In my practice, photobiomodulation is used as part of a sports recovery and well-being approach.

It does not replace a medical diagnosis, medical treatment, or the management of an injury by a healthcare professional.

Key Takeaways

Photobiomodulation uses light as a biological stimulus.

Photons can interact with different cellular structures and influence several mechanisms associated with mitochondrial activity, ATP, nitric oxide, ROS, calcium, and cellular signalling.

These mechanisms may then influence how the body responds to exercise and adapts.

Wavelength + irradiance + distance + duration + dose + treatment area = photobiomodulation protocol

To Learn More

Photobiomodulation is the subject of extensive scientific research, particularly in the fields of cellular biology, muscle recovery, and physical medicine.