Mark D. Stephenson, MS, ATC, CSCS, TSCA-F, CSPC

Mark Stephenson is the Director of Player Performance for the NFL’s Detroit Lions. He is responsible for the coordination within disciplines of strength & conditioning, rehabilitation, nutrition, sport science, and recovery. Stephenson regularly presents at both national and international professional conferences on topics related to the state of physical and psychological readiness, recovery, and performance.

Prior to joining the Detroit Lions, Stephenson served as the Human Performance Program manager for Naval Special Warfare Development Group (DEVGRU). While at DEVGRU, his area of expertise involved the application of performance enhancement methods as it relates to the physical and mental integration for optimal performance. Additionally, he was involved in the selection and assessment of Navy SEALs for their abilities to perform under stressful conditions. Stephenson has collaborated extensively with the Air Force Research Laboratory’s 711th Human Performance Wing in various research projects involving wearable technologies and recovery modalities.

He also served as the Director of the Human Performance Center at the National Strength and Conditioning Association (NSCA) and is the founder and developer of the NSCA’s Tactical Strength and Conditioning (TSAC) program. Besides his experience with Special Operations, he has also served as the tactical physiologist for the Colorado Springs Police SWAT team through his position at the NSCA.

Stephenson received a BS in Exercise Science from Rhode Island College and a MS in Health Science from Rocky Mountain University of Health Professions. He is currently a PsyD in Sport and Performance Psychology candidate at the University of the Rockies.

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