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Dr. Alison Modafferi, PT, DPT

I am a doctor of physical therapy who prides herself in promoting a healthy lifestyle through movement, self empowerment, and research.

I grew up in Michigan and have been active most of my life. Throughout high school and college, I grew to love everything about the human body. What led me to specifically physical therapy, was a running injury of my own.

It started as a stress fracture in my shin which healed nicely but my orthopedic physician did not offer any rehab or physical therapy options. After being in a boot, I needed some rehab. Fast forward 3 years, shin splints, compartment syndrome, expensive custom orthotics, every type of shoe available, and 3 physical therapists later I am beyond being told "Maybe you were not meant to run" or "just stop running an let it heal".   I finally found myself in physical therapy school learning about gait. I spoke with my biomechanics professor and within 3 sessions I could run AND I could run pain free.

I have never looked back.


Working closely with Dr. Cuddeford, Run the World Physical Therapy & Performance was created.  Run The World is centered around research based treatments designed to provide the most effective care in the industry. 

My purpose is to use my experience, education, and research to shift the physical therapy profession in a direction that is effective, evidence based and directed toward patient goals, while letting you run!

Dr. Tyler Cuddeford, PT, PhD


I am committed to pursuing the underlying mechanism of sports-related injuries ranging from novice to professional. Our research requires complex and sophisticated approaches utilizing 3D motion analysis, diagnostic ultrasound, and electromyography. I am also committed to use new and innovative approaches to solve complex and demanding problems. Recent areas of focus include: biomechanical and clinical rehabilitation approaches to Achilles and patellar tendinopathy as well as injury prevention and analysis in runners.


My physical therapy and PhD training as a sports biomechanist, coupled with my footwear research and development experience at NIKE were instrumental in helping develop products and footwear that didn’t cause injuries to high-profile athletes. Over the course of my career, I have analyzed over 1000 runners and athletes of all types and abilities. I use the most current evidence and is incredibly balanced in my approach to running form, analysis, injuries, and footwear and specializes in the complicated runner.

Larry Julson

I am an experienced running coach who has successfully worked with elite level, masters level, and weekend warrior athletes. While running in college, I earned all American marks in cross country and track at Grand Valley University in Michigan. I can help you get stronger and healthy so you can accomplish any of your goals.