What is Applied Functional Science? A Scientifically Sound Approach to Optimizing Human Movement

Applied Functional Science® (AFS) is a transformative approach to understanding and optimizing human movement, developed by Dr. Gary Gray and Dr. David Tiberio of the Gray Institute®. Since the early 1980s, they have meticulously documented their unique philosophy on movement, culminating in what is now known as AFS. This comprehensive system is grounded in scientific principles and focuses on practical, functional applications that can be seamlessly integrated into everyday activities and therapeutic practices.

Why Was AFS Developed?

Dr. Gary Gray and Dr. David Tiberio realized that much of the existing information on human movement did not align with their observations and experiences. They sought a system that was not only scientifically sound but also practical and applicable to real-world situations. The goal was to create a method that practitioners could rely on to understand and improve human movement comprehensively. Thus, AFS was born, incorporating practical, science-based principles into a cohesive framework.

The Three Sciences of AFS

AFS is distinguished by its integration of three scientific disciplines:

1. Physical Science: This involves understanding and applying the laws of physics, such as gravity, ground reaction force, mass, and momentum, to human movement.
2. Biological Science: This focuses on the anatomy and physiology of the human body, including muscle function, proprioception, and the intricate workings of joints.
3. Behavioral Science: This considers the mental and emotional drivers that influence movement, such as motivation, fear, and the power of the mind and spirit.

Dr. David Tiberio emphasizes that these sciences together provide a robust foundation for understanding how the body moves and reacts in various environments.

How AFS Works

AFS practitioners use a unique process to assess and enhance movement. Instead of relying on rigid protocols or isolated exercises, they ask functional questions through movement. By observing how the body responds, practitioners can identify areas of strength and weakness, allowing for highly personalized and effective treatment plans.

This method alleviates the anxiety many practitioners feel when faced with new or complex cases. With AFS, they don’t need to know everything beforehand; they let the client's movements guide the assessment and treatment.

Why AFS is Different

AFS stands out because it rejects many conventional testing and treatment methods that don’t reflect the realities of human movement. Dr. Gary Gray explains that traditional tests like isolated leg lifts or static stretches do not capture the dynamic and interconnected nature of real-life movement.

Instead, AFS emphasizes movement patterns that mimic everyday activities. This approach ensures that the strategies and techniques used are not only scientifically valid but also make intuitive sense to both practitioners and clients.

The PST Process

The core of AFS is the PST Process, which stands for Principles, Strategies, and Techniques:

• Principles: The foundational truths about how the body moves, are derived from the three sciences.
• Strategies: Plans based on these principles, are used to assess, train, rehabilitate, and prevent injuries.
• Techniques: Specific exercises and movements designed to implement the strategies effectively.

This process transforms theoretical knowledge into practical application, enabling practitioners to make informed, effective decisions about treatment and training.

The Impact of AFS

AFS empowers movement professionals by providing a clear, science-based framework for understanding and improving human movement. It builds confidence and competence, allowing practitioners to deliver personalized, effective care. By focusing on functional, real-world movements, AFS ensures that clients can achieve better outcomes, whether they are recovering from an injury, enhancing athletic performance, or improving overall mobility.

In summary, Applied Functional Science® is a groundbreaking approach that combines the best of physical, biological, and behavioral sciences to create a comprehensive system for optimizing human movement. Its practical application and scientific foundation make it an invaluable tool for any movement professional committed to excellence.