The importance of recognizing a closed-chain activity lies in the fact that the motions of multiple joints are coupled. Weakness at any one joint will consequently limit performance of the entire movement.

The effects of alcohol on athletic performance vary depending on quantity, demographics, and type of exercise, making it difficult to determine specific recommendations. From an athletic performance standpoint, the acute use of alcohol can influence motor skills, hydration status, aerobic performance, as well as aspects of the recovery process.

It is apparent that speed plays a vital role in successful baseball performance. Because of the short distances involved in the game, players rarely, if ever, achieve maximum speed and in actuality, it is acceleration that plays a much greater role in baseball.

NSCA Member Spotlight: Diane Homan shares her journey from club volleyball to coaching youth and professional athletes, built on NSCA credentials and community.

Andrea Hayden, Assistant Strength and Conditioning Coach for the Minnesota Twins Major League Baseball (MLB) team, talks to the NSCA Coaching and Sport Science Program Manager, Eric McMahon, about being great at your craft. Topics of discussion include how to train athletes in a sport you have never played and creating great career opportunities through education and networking. Find Andrea through Email: andreahayden@twinsbaseball.com | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

What does a typical day look like for a sports performance coach? Nicole Shattuck shares her experience working with women’s lacrosse at Duke University, where ample resources fuel athlete outcomes. Start by examining her comprehensive approach to readiness that raises awareness for both athletes and coaches. Guided by data, Nicole uses insights to adapt workouts, manage physical and mental stress, and deepen the athlete-coach relationship. New to lacrosse? Nicole breaks down a detailed needs analysis, outlining workload management for different position groups. Plus, as the Chair of the NSCA Lacrosse Special Interest Group, Nicole provides opportunities for lacrosse professionals to connect. Follow her unique path from a background in business and the private sector to finding her calling in collegiate coaching. Driven by a desire to build a Duke University sport science department, Nicole also recently earned her Certified Performance and Sport Scientist® (CPSS®) credential and reveals how it empowers her relationships with allied health professionals. Connect with Nicole on Instagram at: @nicole_lilia or by email at: nicole.shattuck@duke.edu | Find Eric on Instagram: @ericmcmahoncscs or LinkedIn: @ericmcmahoncscs Join the NSCA Lacrosse Special Interest Group (SIG) online on Facebook, LinkedIn, or Instagram! Plus, get together in person at the Lacrosse SIG Meeting at the 2024 NSCA National Conference in Baltimore, MD. REGISTER NOW at NSCA.com/NSCACon

Caitlin Quinn, Director of Performance for Toyota Racing Development talks to the NSCA Head Strength and Conditioning Coach, Scott Caulfield, about her start in the field of strength and conditioning with internships, her time at Florida State as a GA and Strength and Conditioning Coach, and her new position at Toyota. Topics under discussion include internships, GA positions, not letting people define you as a coach, and the athletes she works with at Toyota Racing Development.

Few strength coaches have shaped sport performance like Al Vermeil — the only strength coach to earn championship rings in both the National Football League (NFL) and National Basketball Association (NBA). In this Gatorade Performance Partner Special Episode, Vermeil shares how a career built on explosiveness, adaptability, and relentless curiosity has transformed teams at every level. From advancing plyometrics and Olympic lifts in the 1970s to creating the performance pyramid and the innovative “time machine” testing system, his methods have influenced generations of coaches and athletes worldwide. Known for blending timeless principles with fresh, actionable ideas, he explains how mechanics, group management, and collaboration create consistent results and lasting trust. Along the way, Vermeil offers rare perspectives on coaching longevity, revealing how his adaptability and curiosity have kept him learning — and lifting — into his 80s. Gain practical insights to keep explosiveness central, integrate performance science, and strengthen your long-term coaching impact. Reach out to Coach Vermeil by email at: a60vermeil@sisna.com | Email Jon Jost at: jonathan.jost@pepsico.com | Find Eric on Instagram: @ericmcmahoncscs or LinkedIn: @ericmcmahoncscs. This special episode is brought to you in part by Gatorade Performance Partner. Learn more and join their community at GatoradePerformancePartner.com.

Part 2 of this article series explores the possible benefits of mindful meditation for coach development as well as how it can improve reflective practice and the coach-athlete relationship.

Periodization of training is based on the principle that different loads (e.g., light, moderate, or heavy) or power requirements recruit different types and numbers of motor units. Recruitment order is important from a practical standpoint for several reasons.