Dr. Jim & Sean
The Neural & Motor Units Behind (B)STRONG


Changing the world one muscle at a time…

We met in the early days of the first company Sean founded, AlterG Inc — developer of the Anti-Gravity Treadmill.  At the same time, Dr. Jim was a science advisor for the Nike Oregon Project, and evaluated the unweighting technology for use with the Nike athletes leading the Nike Oregon Project to become AlterG’s first partner.

Over the years we stayed in touch disscussing various advancements in the field of rehabilitation and human performance until one day Jim was introduced to the concept of BFR.  It didn’t take long to realize the potential or the concept for changing the way people train, recover, heal, and general stay healthy.

Nobody had optimized the technology for mass adoption!

With Sean’s decade of experience in entreprenuership, Jim’s 30+ years at the top of the medical and performance field, and a cameo appearance from Sean’s dad (NASA researcher, Biomechanics PhD, and original inventor of the AlterG), we set set out with the goal of making a system for EVERYONE.  We are very fortunate to have some of the brightest minds in the fields of strength and conditioning and physical therapy continuing to test and help us improve our products and services.  We view the concept of BFR as a full system composed of hardware and software ingenuity, scientific acumen, and vigourous yet simple education.  One of our goals at B STRONG is to mesh all these components into a system that follows our basic goals of:

Safe          Effective          Affordable        Easy-to-use       

VOILA!, B STRONG was born.

B STRONG has quickly grown to be the tool of choice for thousands of users around the globe since the official launch in early 2017, and we are fortunate and proud to call some the best athletes, coaches, doctors, and physical therapists in the world part of our family.

As the field develops, we are looking forward to continuing to use science, engineering, education, and our strong connection with the professional community to continue to make this amazing technology accessible for every human on the planet!

Change the world!  B STRONG!



Sean started his career in entrepreneurship straight out of Stanford University where he earned a B.S. in mechanical engineering and an M.S. in Management Science and Engineering. Sean spent 4 years playing Varsity Men’s Soccer learning first hand the fundamental importance of proper training and recovery. Sean’s first company, AlterG Inc, disrupted the world of un-weighting technology for sports performance and rehabilitation with its flagship product, the Anti-Gravity Treadmill. Through his experience with AlterG, Sean developed a passion for pushing the limits of performance and recovery, and providing those in need with tools to enable them to come back stronger than ever and pursue a healthy lifestyle.



Since receiving his board certification in general surgery in 1985, Jim has focused his work and research on maximizing human performance, health and resilience. He pioneered the Hi-Low training protocol and played a key role in the development of the anti-doping test, SAFE, which stands for Safe And Fair Events. It is considered the most aggressive blood-profiling test in the fight against doping.He has worked with numerous Olympians in various sports and has an ongoing relationship with world renowned long-distance runner Alberto Salazar, who also is a coach and director of the NIKE Oregon Project. Jim has been an official physician and consultant of the United States, Norwegian and Canadian Olympic teams. He is an official member of 15 world championships.Jim completed post-doctoral fellowships in cardiovascular physiology and human nutrition at the University of Texas Southwestern Medical School. He received appointments as an associate professor of orthopedic surgery and physiology. He spent 20 years on the faculty of UTSW and helped build and direct two human-performance centers at St. Paul and Baylor University hospitals.He has served on international medical committees that include the International Olympic Committee, FIFA, International Biathlon Committee, International Ski Federation and the International Skating Union.Jim also is the sports science advisor for the US Ski and Snowboard Association (USSA), and continues to lead human performance and altitude camps for Olympic athletes, masters athletes, as well as Navy SEALs. He runs The SG Performance Medicine Center and Sport Technologies for Maximal Athletic Performance, overall fitness, weight loss, and recovery in Frisco, Texas, and now the new center in Park City, Utah, located inside The Center of Excellence USSA Building.