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 primary focus of this article is to provide personal trainers with an evidence- and practice-based approach to exercise selection and implementation in those with low back pain.
Personal trainersExercise TechniqueProgram designClient Consultation|Assessment
This article in PTQ 11.4 shares the latest fitness news to provide personal trainers with strategies for perimenopausal clients. Visit NSCA online to read articles on exercise science and fitness.
Personal trainersExercise ScienceNutritionProgram designTesting and EvaluationClient Consultation|AssessmentBasic Pathophysiology and Science of Health Status or Condition, Disorder, or Disease
This Personal Trainers Quarterly article presents protein dosing strategies to maximize wellness for the aging population. Visit NSCA online to read more on nutrition, health, and wellness.
Personal trainersExercise ScienceExercise TechniqueProgram designClient Consultation|AssessmentBasic Pathophysiology and Science of Health Status or Condition, Disorder, or DiseaseProfessional Development
This article seeks to provide personal trainers with eight brief modifications that clients can benefit from if they suffer from both acute and chronic lower back pain (LBP).
Exercise is an underutilized therapy for the treatment of cognitive diseases such as Alzheimer’s disease and depression. While exercise shows more promise for the prevention, rather than the treatment, of Alzheimer’s disease, exercise therapy compares favorably to the most common treatments of depression (psychotherapy and antidepressants).
Personal trainersExercise ScienceBasic Pathophysiology and Science of Health Status or Condition, Disorder, or Disease
Get to know Army Lieutenant Colonel Nick Barringer, Program Director for the United States Army-Baylor University Master’s in Nutrition. Barringer shares how he originally planned to become a strength and conditioning coach before a nutrition course inspired him to pursue dietetics. However, it was his Certified Strength and Conditioning Specialist® (CSCS®) credential that ultimately landed him his role as the first 75th Ranger Regiment (Army Rangers) Dietitian. He recounts drawing inspiration from the Navy SEALS to start the Ranger Athlete Warrior (RAW) program and seeing the Special Operations THOR3 program follow suit — laying the groundwork for the US Army Holistic Health and Fitness (H2F) system. Barringer and McMahon discuss the synergy between strength and conditioning coaches and dietitians, as well as cultural challenges and diverse training ages in tactical settings. The pair also stress the importance of sales and building relationships before discussing basic nutrition advice and pathways into tactical and dietetics careers.
Connect with Nick on Instagram at: @nickbarringer.phd.rdn or by email: nickbarringer35@gmail.com | Find Eric on Instagram: @ericmcmahoncscs or LinkedIn: @ericmcmahoncscs
May 30, 2025by Juan Gonzalez, PhD, CSCS, Jung-Il Oh, PhD, Sofia Alvarado-Valdez, Brianna Villarreal, Edgar De La Cruz, Daniela Barrera, and Nicole Trevino
The purpose of this article is to provide fitness professionals with best practices on creating a program that uses red light therapy to aid in weight loss and weight management.
Personal trainersExercise ScienceNutritionProgram design
Marquis Johnson, Assistant Strength and Conditioning Coach with the Minnesota Vikings National Football League (NFL) team, and Bryan Doo, former Head Strength and Conditioning Coach of the Boston Celtics National Basketball Association (NBA) team and owner of Optimal Fitness, join as guests with the NSCA Coaching and Sport Science Program Manager, Eric McMahon. Also returning for this Gatorade Performance Partner collaboration episode is guest co-host Jon Jost, a 27-year veteran college strength and conditioning coach and the Team Sports Manager for Gatorade. Join this fun group of strength and conditioning coaches from across the industry as they discuss what it means to be successful, as well as how they are reshaping the different career paths within the field.
Connect with Marquis on Instagram: @quis_fit | Reach Bryan on Instagram: @bdoostrength or Twitter: @bdoo22 | Email Jon at: jonathan.jost@pepsico.com | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs
To learn more and join the Gatorade Performance Partner Community, visit GatoradePerformancePartner.com.
Sam Moore’s path into sport science is defined by taking risks and chasing meaningful questions. After a devastating knee injury as a collegiate athlete, Moore not only returned to compete, but she also discovered her calling in strength and conditioning. She recounts her coaching, sport science, and hybrid roles prior to leaving a full-time position to pursue her PhD at the University of North Carolina at Chapel Hill. Moore describes sport science as problem-solving and drawing evidence across disciplines to drive innovation. She discusses her research on female athlete availability in elite settings, including nuances like body composition, recovery, and high speed exposure in training. Moore advises young professionals to remain open-minded, pitch their ideal position if it does not exist, and go “all in”— knowing one decision does not define forever. Whether you are a coach or researcher, this episode delivers real-world insights on navigating your career with courage and curiosity.
Connect with Sam on Instagram: @sammoorestrong and Twitter/X: @SamMooreStrong | Find Eric on Instagram: @ericmcmahoncscs and LinkedIn: @ericmcmahoncscs