This article is the fourth of a continuing series that examines pertinent and recent tactical strength and conditioning research reviews.

Hear from Lacey Jahn, Head Strength and Conditioning Coach for the United States Marine Corps East School of Infantry. Jahn shares her unusual path into strength and conditioning with NSCA Coaching and Sport Science Program Manager, Eric McMahon, including stops in curriculum development and working as a lifeguard. Learn more about tactical strength and conditioning jobs, athletic qualities as they relate tactical performance in the military, and the how to approach attending strength and conditioning education events as a young coach. You can reach out to Lacey on Instagram: @laceylyrla | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

Josiah Igono, Director of Peak Performance for the Texas Rangers Major League Baseball (MLB) team, talks to the NSCA Coaching and Sport Science Program Manager, Eric McMahon, about what defines performance. Topics under discussion include the importance of coaching mental skills, diversifying your skillsets as a coach, and leaving a legacy. Find Dr. Igono on Instagram: @josiahigono or Twitter: @JosiahIgono | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

Autumn Lockwood knows football. As the daughter of a collegiate football coach, she’s been attending games and “breathing football” since she was born. Now, she holds a highly coveted full-time position as an Associate Performance Coach for the National Football League (NFL) Philadelphia Eagles. But this was not always her plan. Follow her unique professional path, from a criminal justice major and aspiring Alcohol, Tobacco, and Firearms (ATF) special agent to coaching at football’s highest level. Learn how the Philadelphia Eagles cultivate a championship culture through never-ending development, strategic staffing, and sport science initiatives. She recounts how mentorship, building a village, and networking enabled her successful career switch. Lockwood and McMahon also discuss coaching challenges and ways the NSCA can push the profession forward through diverse collaboration, uncomfortable conversations, and deeper in-person connections. They conclude by breaking down the calendar training year, key performance indicators, and athlete profiling in professional football. Connect with Autumn via Instagram: @autumnlockwood, LinkedIn: @autumn-lockwood, or email: alockwood@eagles.nfl.com | Find Eric on Instagram: @ericmcmahoncscs or LinkedIn: @ericmcmahoncscs Love football? Join your fellow professionals in the NSCA Football Special Interest Group! This episode discusses the intangible rewards of volunteering, like opening career doors and making connections. Want to get involved? Check out NSCA.com/Volunteer for opportunities.

Squash demands speed, strength, and control at the edge of human range — but still suffers from a massive stigma around heavy lifting and underuse of strength and conditioning. Brigita Roemer is leading the shift as Director of Strength and Conditioning for U.S. Squash, where she oversees all off-court physical development. After suffering a devastating injury as a track and field athlete, she discovered strength and conditioning when a biomechanics team “put [her] back together,” setting her on a linear path in the profession. Assigned to a sport she had never heard of before, Roemer began by emphasizing injury risk reduction, full range of motion, and “strength at length” to meet squash’s extreme movement and deceleration demands. With frequent connective tissue injuries like sprains and strains, athlete availability remains a top concern. By prioritizing continuing education and building relationships, Roemer has helped U.S. Squash make history — on the path to LA 2028. Connect with Brigita on Instagram: @brigey_lux | Find Eric on Instagram: @ericmcmahoncscs and LinkedIn: @ericmcmahoncscs Elite strength and conditioning pros like Brigita Roemer rely on NSCA events to stay sharp, grounded, and connected. Join them at the 2025 NSCA National Conference (NSCACon) this July 16–19 in Kansas City, MO.

Static and dynamic conditioning of the core musculature is important in activities of daily living and in sport. This book excerpt includes sample static exercises to strengthen the core muscles responsible for stabilization against, or movement through, the four basic movement patterns.

Andrea Hudy, now the Head Men’s Basketball Strength and Conditioning Coach for the University of Texas, talks to the former NSCA Head Strength and Conditioning Coach, Scott Caulfield, about how she got into strength and conditioning. Topics under discussion include the collaborative efforts of the sports medicine team and doctors during her time at the University of Kansas, how she was hired, writing her book and continuing her education, and the value of hosting clinics. Find Andrea on Twitter: @A_Hudy

Mary Kate Feit, Assistant Professor and Associate Director of Strength and Conditioning at Springfield College, and Adam Feit, Coordinator of Physical and Mental Performance at Springfield College and Assistant Director of Performance Nutrition at Precision Nutrition, talk to the NSCA Coaching Program Manager, Eric McMahon, about being a married couple in the world of strength and conditioning. Topics under discussion include the unique positions they hold at Springfield College, how becoming parents has changed their perspective on coaching, and why diversity is so important for the future of the field. Connect with Mary Kate via email: mfeit@springfield.edu | Find Adam on Twitter: @Adam_Feit or Instagram @aefeit | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

Although most resources on program design review the foundational scientific principles of training, they often fail to provide practical strategies that strength and conditioning professionals need in order to apply these principles successfully. To help bridge the gap between science and application, this article provides a simple and practical, step-by-step system for applying the scientific principles of training into the program design process.