The purpose of this article is to provide personal trainers with a review of common muscle extensibility tests of the lower extremity.

Jason Loscalzo, Head Strength and Conditioning Coach for the Chicago Bears National Football League (NFL) team, talks to the NSCA Head Strength and Conditioning Coach, Scott Caulfield, about his journey from a college to NFL strength and conditioning coach. Topics under discussion include networking, diversifying your portfolio, and coaching philosophy. Find Jason Loscalzo on Twitter: @jason_loscalzo| Find Scott on Instagram: @coachcaulfield

This Personal Trainers Quarterly article examines a client's ability to maintain pelvic and trunk stability during a dynamic fitness screening. Visit NSCA online to read more on corrective exercises, health, and fitness.

NATCON 2022

Loren Landow, owner of Landow Performance in Denver, CO, demonstrates errors and coaching tips for the pro agility drill.

Nick Tumminello, 2016 NSCA Personal Trainer of the Year, discusses strategies to enhance single-leg exercises.

In this session from the 2017 Coaches Conference, Joe Eisenmann explains the three major energy systems in the human body, identifies appropriate tests of physical work capacity, and explains how to design programs that maximize energy production and fatigue resistance in sports.

Dwight Daub, Director of Athletic Performance for the Oklahoma City Thunder, spoke at National Conference 2012 on designing a warm-up and training program for basketball players.

Dr. Tim Suchomel, Assistant Professor at Carroll University and Wisconsin State Director for the NSCA, talks to the NSCA Coaching and Sport Science Program Manager, Eric McMahon, about the emerging role of sport science in strength and conditioning. Topics under discussion include Suchomel’s growing involvement with the NSCA, as well as weightlifting derivatives and their benefits for more individualized performance adaptations. Find Dr. Suchomel on Twitter: @DrTSuchomel or Instagram: @drtsuchomel or NSCA Sport Science and Performance Technology Special Interest Group | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

You don’t have to love the weight room, but you can’t last without it. Champ Bailey, a National Football League (NFL) Hall of Famer, admits he never enjoyed lifting, but says respecting the work gave him the edge to sustain 15 seasons at the highest level. Hear how his preparation evolved from traditional lifts to readiness routines — core, mobility, warm-ups, and recovery — that kept him fresh through the NFL grind. Bailey emphasizes that strength and conditioning coaches are undervalued leaders who “see you at all levels,” guide comebacks, and build buy-in with simple numbers. He recalls how a failed conditioning test led to one of his best seasons, and how weight room leadership left no cracks to ensure buy-in from everyone. Bailey continues his impact through the Positive Athlete initiative, using sport as a platform for growth. Gain practical ways to tailor training by role, earn athlete respect, and build a winning culture. Connect with Champ via email at: ChampBailey@positiveathlete.org | Find Eric on Instagram: @ericmcmahoncscs and LinkedIn: @ericmcmahoncscs Answer the call to give back and lead the profession. Applications for the NSCA and NSCA Foundation Boards of Directors are now open, with more volunteer positions available October 1. See if you qualify and apply at NSCA.com/Volunteer.