This excerpt briefly describes key aspects of this nonessential amino acid including its effect on the body, efficacy, and adverse effects.

Brian Gearity, Program Director and Professor of the Master of Arts in Sport Coaching program at the University of Denver talks to the NSCA Head Strength and Conditioning Coach, Scott Caulfield, about the sociology of strength and conditioning. Topics under discussion include continuing education, becoming a writer, and how to coach a variety of people. Find Brian on Twitter: @DrGearity | Find Scott on Instagram: @coachcaulfield

What defines true toughness in coaching? Dan Perlmutter presents an alternative to the “tough strength coach” stereotype, reframing success as adaptability, resilience, and relentless positivity. As Director of Sports Performance and Head Olympic Sports Performance Coach at Duke University, Perlmutter reflects on building a strong culture rooted in genuine relationships and longevity. He explains Duke’s structured approach to developing interns and coaching assistants, highlighting purposeful recruiting and intentional mentorship to transform passion into professionalism. Perlmutter emphasizes a gratitude lens and people-focused philosophy, always prioritizing the athlete in front of him. He also addresses how strength and conditioning coaches can navigate collegiate shifts, such as Name, Image, and Likeness (NIL) deals and the transfer portal, by reinforcing the weight room environment and culture. If you are seeking practical strategies to build a sustainable career and a workplace you look forward to each day, this conversation is your blueprint. Connect with Dan via email at dan.perlmutter@duke.edu and on Instagram: @theothercoachp | Meet the Duke University Sports Performance Staff on their website | Find Eric on Instagram: @ericmcmahoncscs and LinkedIn: @ericmcmahoncscs

Bob Alejo, Director of Sports Science at Power Lift, talks to the NSCA Head Strength and Conditioning Coach, Scott Caulfield, about how Bob got into Strength and conditioning when the field was in its early stages of development. Bob shares his experience and gives advice on how to succeed in the strength and conditioning field.

Alex Calder, Head of Sports Science for the Houston Dynamo Major League Soccer (MLS) team, talks to the NSCA Coaching and Sport Science Program Manager, Eric McMahon, about sports science data driving better decisions on and off the field. Topics under discussion include the importance of traditional strength training for soccer players, as well as, the variety of strength and conditioning opportunities there are to gain experience from at the high school, college, private, and professional level of sports. Find Alex on Twitter: @calder_05 or Instagram: @calder_05 | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

One of the most important skills for tactical facilitators to have is the ability to influence others. One way tactical facilitators can improve their influence is through education, observation, and participation.

The purpose of this article is to identify and discuss some barriers and benefits of training initiatives among professional firefighters.

Occupational police tests described in the literature can serve as indicators of the occupational performance of their employees. In addition, practitioners in charge of police training should develop and employ obstacle courses composed of critical work tasks, as they may be strongly related to tests of aerobic endurance, strength, muscular endurance, and agility.

The purpose of this article is to identify considerations that are to be taken into account when designing and implementing an annual training program for firefighters, as well as to discuss strategies for implementation.

High-Intensity Resistance and High-Impact Training and Bone Mineral Density—a Narrative Review: Part 1