Growth hormone release is affected by the type of resistance training protocol used, including the duration of rest periods. Short rest period types of workouts result in greater serum concentrations compared to long rest protocols of similar total work; however, at present it is not clear how the various molecular forms or types of growth hormones are affected by rest period duration.

There is no argument that periodization is successful, and that different models can be applied with success in different fashions. The question of how shift work really affects a periodized program—more specifically firefighter shift work—is less clear.

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

Mentorship isn’t flawless — and that’s where its power lies. Erik Hernandez, Associate Director for Sports Performance – Olympic Sports at the University of North Carolina (UNC) at Chapel Hill, has built his career on turning imperfect scenarios into lasting lessons for athletes and young coaches alike. For over 14 years at UNC, he has guided lacrosse, volleyball, and golf, adapting his voice to each culture while holding firm to shared standards of accountability and growth. Hernandez streamlines training into a three-phase model — explosive, strength, and remedial — yet emphasizes that delivery and communication matter more than complexity. He reminds athletes, “modifications are part of progress,” linking health, recovery, and seasonal demands to long-term development. For interns and early-career coaches, his advice is clear: earn mentors by serving others, and learn from every scenario, even the imperfect ones. Hear how mentorship, adaptability, and athlete health point the way forward for stronger teams and longer careers. Reach out to Coach Hernandez on Instagram: @hernandezstrength or by email: ehhernan@email.unc.edu | Find Eric on Instagram: @ericmcmahoncscs and LinkedIn: @ericmcmahoncscs Answer Bryan Mann’s “call to arms!” Many volunteer applications are open now through December 15. Step up and give back to your strength and conditioning community at NSCA.com/Volunteer.

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

This Personal Training Quarterly article discusses how myofascial techniques can reduce pain, improve mobility, and enhance quality of life for women in breast cancer recovery. Visit NSCA online to read more on recovery, health and fitness.

This article in NSCA Coach shares a research-driven framework for dryland training in competitive swimming. Visit us online to learn more on sport performance and exercise science.

This article will provide some conditions and standards with specific tools personal trainers may consider using in their initial interview with potential clients.

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.