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

This excerpt from NSCA's Essentials of Tactical Strength and Conditioning explains the importance of third-party certifications on supplements in the tactical population.

Meet Tara De Leon, a former collegiate strength and conditioning coach who now works as a personal trainer in Edgewater, MD. De Leon shares insight with NSCA Coaching and Sport Science Program Manager, Eric McMahon, and episode co-host, NSCA Personal Training Program Manager, Blake Brightwell, on alternate routes for strength and conditioning coaches through personal training, group fitness, and private sector coaching. This episode discusses the “coaching identity” as it exists and impacts coaches’ beliefs across various stages of professional development. With the growth of the strength and conditioning field, De Leon challenges us to expand our thinking and perceptions around personal training, while holding true to our values and expertise as coaches. Regardless of your current role in the profession, learn more about how the NSCA can help you grow your career. You can connect with Tara on Instagram: @tara_de_leon_fitness or tara@edgewaterfit.com | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

Tom Williams’ journey to Head of Performance and Sport Science for Major League Soccer (MLS) powerhouse, the Los Angeles (LA) Galaxy, began at a crossroads: pursue traditional coaching or medical pathways. As a soccer “Swiss Army knife,” he embraced early sport science alongside coaching, building a career defined by collaboration and innovation. At the Galaxy, Williams is part of a web of support that uses rich data storytelling tailored to stakeholders and players, guiding decisions and infusing value in every encounter. This system drives their three key pillars: winning championships — including their recent record-breaking sixth MLS Cup — developing a robust academy pipeline, and leading innovation. In MLS’s “cultural melting pot,” Williams balances diverse backgrounds and short-term demands like fixture congestion while employing sustainable long-term strategies. With a unique full-time cognitive department and creative approaches like dodgeball warm-ups, he combines trust and ingenuity to elevate performance and presents a blueprint for those exploring emerging sport science. Reach out to Tom on LinkedIn: @tom-williams and X/Twitter: @Williams26Tom | Find Eric on Instagram: @ericmcmahoncscs and LinkedIn: @ericmcmahoncscs Did you know MLS has a newly mandated Certified Performance and Sport Scientist® (CPSS®) role? Engage with NSCA’s Pro Sport Partner, the Professional Soccer Performance Association (PSPA), on social media to learn more: Instagram: @pspa_performance X/Twitter: @PSPA_perform LinkedIn: @professional-soccer-performance-association

The aim of this article is to provide an overview of the research on multi-ingredient pre-workout supplements (MIPS) and help practitioners become educated consumers when evaluating the various formulas and products on the market for making recommendations to clients or athletes.

Sam Melendrez, full-time strength and conditioning coach for Discovery Canyon Campus High School, talks to the NSCA Coaching and Sport Science Program Manager, Eric McMahon, about the value of strength and conditioning coaches at the high school level. Topics include advice for those who are interested in strength training youth and high school athletes, programming fundamentals, and the value of applying classroom management skills in the weight room. Find Sam on Twitter: @sammelendrez2 | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

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.

Veteran Strength and Conditioning Coach for the Miami Heat of the National Basketball Association (NBA), Bill Foran, joins the NSCA Coaching Podcast and reflects on a more than four-decade coaching career. Foran discusses his early beginnings teaching elementary school physical education, with NSCA Coaching and Sport Science Program Manager Eric McMahon, and what led him towards pursuing collegiate and professional sports strength and conditioning. Foran shares stories of resourcefulness from the early days, before the strength and conditioning field was formally defined, up to more recent years using sport science technology and foundational core principles to inform training practices for elite NBA players, such as Lebron James and Shaquille O’Neal. This episode is informative for strength and conditioning coaches at any level, emphasizing the importance of building lasting relationships with athletes and head coaches, as well as taking advantage of all that the NSCA has to offer. Reach out to Coach Foran at by email at bforan@heat.com | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs Learn more about NBA strength and conditioning with the National Basketball Strength and Conditioning Association (NBSCA), an Official Sport Partner of the NSCA.

The third and final article in this series will introduce the practical and technical elements of heart rate variability (HRV) monitoring in greater depth and detail.