The path to the top is not always linear. For Jill Costanza, it included returning to school and stops in collegiate and military performance before becoming Director of Sport Science and Assistant Strength and Conditioning Coach with the National Football League (NFL) Detroit Lions. Costanza describes today’s sport science landscape as a “Wild West,” where definitions differ by perspective. Her focus centers on assessing the athlete and program effectiveness against the demands of the game to identify holistic interventions. She outlines how intentional systems, a clear communication funnel, and data visualizations help athletes and stakeholders understand the “why,” build buy-in, and tap into competitiveness. Addressing common misconceptions, Costanza clarifies that elite athletes can still have foundational qualities that need rewiring. She emphasizes movement quality, proprioception, and breathing while adapting for individual needs and neurological fatigue. Learn how to build sport science systems, turn insights into action, and keep progressing on your professional path.
Reach out to Jill by email at: jill.costanza@lions.nfl.net | Find Eric on Instagram: @ericmcmahoncscs and LinkedIn: @ericmcmahoncscs
Join the NSCA Football Special Interest Group (SIG) and explore 24 other specialized communities designed to support your development on the Special Interest Groups page.
Kayleigh Fournier, now Assistant Director of Strength and Conditioning at Dartmouth College, talks to the former NSCA Head Strength and Conditioning Coach, Scott Caulfield, about her journey from unpaid intern to head strength coach. Topics under discussion include work ethic as a young professional getting into the field, programming for unconventional sports, and diversifying your network of support.
Connect with Kayleigh through email: kayleigh.fournier@dartmouth.edu
Contracted Human Performance and Optimization Coach of 2nd Ranger Battalion, 75th Ranger Regimen Jeff Carroll talks to the NSCA Head Strength and Conditioning Coach, Scott Caulfield, about his start in the field of strength and conditioning and his transition from professional athletes to a tactical population and setting. Topics under discussion include: Carroll’s career path, coaching professional athletes, transitioning to tactical strength and conditioning, and the future of tactical strength and conditioning.
CoachesOrganization and AdministrationProfessional Development
Dave Forman, Director of Strength and Conditioning at Virginia Military Institute, talks to the former NSCA Head Strength and Conditioning Coach, Scott Caulfield, about becoming a strength coach. Topics under discussion include communication with athletes, appreciating the growth as a coach over time, and creating lasting impressions and relationships with athletes.
Find Dave on Twitter: @VMIStrength
Bobby Smith, owner and Director of Sports Performance at Reach Your Potential Training, talks to the National Strength and Conditioning Association (NSCA) Head Strength and Conditioning Coach, Scott Caulfield, about the transition to owning his own facility and his impact on youth athletes. Topics under discussion include Smith’s education and previous athletic experience that led him to sports performance, being the owner of a sports performance facility, and his impact on youth athletes.
CoachesProgram designOrganization and Administration
Learn about pursuing strength and conditioning roles from father and son, Joe Kenn and Peter Kenn. Joe “Big House” Kenn brings perspectives on program leadership from over 35 years in the strength and conditioning profession. Joe’s son Peter, a recent graduate in the field and Assistant Strength and Conditioning Coach at United States Military Academy West Point, shares his story of learning the profession from a young age with his dad coaching in the National Collegiate Athletic Association (NCAA) and National Football League (NFL). Tune in to hear dinner table conversation, as Joe and Peter connect with NSCA Coaching and Sport Science Program Manager, Eric McMahon, in an episode that bridges coaching generations.
Find Joe on Instagram: @bighousepower or Twitter: @bighousepower | Find Peter on Instagram: @peterkenn1 or Twitter: @peterkenn1 | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs
This article from Personal Training Quarterly reviews tart cherry supplementation and its role in strength training. Visit NSCA online to read more on athletic performance and sport nutrition.
Personal trainersExercise ScienceNutritionProgram designTesting and EvaluationClient Consultation|AssessmentBasic Pathophysiology and Science of Health Status or Condition, Disorder, or DiseaseProfessional Development
The purpose of this article is to discuss creatine supplementation for athletes by addressing supplementation for athletic performance, recovery, cognition, brain function, safety, contraindications, and other special considerations.
May 30, 2025by Juan Gonzalez, PhD, CSCS, Jung-Il Oh, PhD, Sofia Alvarado-Valdez, Brianna Villarreal, Edgar De La Cruz, Daniela Barrera, and Nicole Trevino
The purpose of this article is to provide fitness professionals with best practices on creating a program that uses red light therapy to aid in weight loss and weight management.
Personal trainersExercise ScienceNutritionProgram design