This excerpt from Developing the Core briefly defines closed- and open-chain exercises and their respective roles in training.

No two days are the same for Will Gilmore as part of a team that oversees over 800 athletes across 200 sports at the Red Bull Athlete Performance Center. From surfers to skydivers, the facility provides an elite high-performance ecosystem for traditionally individual sport athletes. Gilmore highlights the need for remote programming and monitoring to support a constantly shifting roster. Together as a team, they navigate uncharted territory in action sports conditioning, guided by physiological demands and underlying energy systems. Gilmore and NSCA Coaching and Sport Science Program Manager Eric McMahon discuss the shift in sport science from ample to actionable data to find, change, and measure what matters most. Gilmore reflects on his “career periodization” and having free time for friends and family while working corporate hours — a stark contrast with his background in Major League Baseball (MLB). The pair also emphasize proactive networking and education for future career opportunities. Connect with Will on Instagram: @will_gilmore_ or LinkedIn: @will-gilmore | Find Eric on Instagram: @ericmcmahoncscs or LinkedIn: @ericmcmahoncscs Want to get involved with the NSCA? Find peers who share your passion for a specific sport or topic in Special Interest Groups (SIGs), or apply now for Volunteer Leadership Opportunities!

Acceleration and maximum speed are terms used in speed development programs, and when developing a program, it is vital to differentiate between the two. This allows coaches to target their training to the capacity most important in their own sport.

This article provides a first-hand perspective of different approaches strength and conditioning coaches can take when they need to produce a highly competitive athlete, but their financial resources are limited.

Strength and conditioning professionals who incorporate a properly designed and supervised training program can help their young athletes train, compete, and reduce the likelihood of injury.

When William Kraemer first entered the field, strength and conditioning was, as he puts it, “primordial.” There were few standards, limited research, and little shared understanding. As one of the most influential figures in strength and conditioning, Kraemer recounts how the profession grew from humble beginnings into a science-driven discipline. That history still holds weight for coaches today. He explains why coaches are often drawn to new ideas, but progress comes from building on proven principles. Workout logs are central to his approach, and he notes how analyzing training over time can improve decision-making. He also emphasizes alignment across the performance ladder to support innovation and athlete development. As the Senior Advisor for Sports Performance and Sports Science at The Ohio State University, he shares his perspective on where the field is headed next. Apply his wisdom to stay grounded in solid principles, evaluate training with greater precision, and better serve your athletes. Reach out to Dr. Kraemer by email: Kraemer.44@osu.edu | Find Eric on Instagram: @ericmcmahoncscs and LinkedIn: @ericmcmahoncscs

This article seeks to provide some insight to optimal biomechanics in running technique and why normal gravitational techniques may not suit tactical athletes while load-bearing.

From a strength and conditioning perspective, how should a tactical athlete be reintegrated when they return to a kinetically operational workplace after time away?

Body composition is an important physical characteristic to consider for football players and their performance. Tyler Bosch goes over the various methods of measuring body composition, what the numbers really mean, and how they can be used to develop a player's training.

This article presents two football-specific speed drills in detail—the single-leg box explosion and the mountain climber.