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.

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 article highlights the scientific evidence on exercises like the seated leg extension, leg curl, and adduction machines to highlight their potential benefits on enhanced performance and potentially reducing injury risk.

The Head Performance and Strength Coach for the Sacramento Kings National Basketball Association (NBA) team, Ramsey Nijem, talks to the National Strength and Conditioning Association (NSCA) Head Strength and Conditioning Coach, Scott Caulfield, about his recent experience completing a doctoral degree as well as his path to his current position.

Early-career coaches have to learn fast, adapt faster, and still earn trust. Sammi Ryan, Assistant Strength and Conditioning Coach at Boston University, shares how seeking golden opportunities led her across the country and into unfamiliar sports. After an early training experience deterred her from the field, Ryan found her way in through graduate experience and a support system she still maintains today. When coaching sports she has not played, Ryan starts with research, trusted peers, and relationships with sport coaches. She stresses that coaches cannot “copy and paste” what worked at a previous stop because every team, athlete, and setting is different. For Ryan, athlete questions are a chance to clarify the plan or change course. She also discusses staff coverage and sport science integration at Boston University. Ryan reflects on helping college athletes grow and develop as humans, not just athletes. Listen to learn how to strengthen your support system, adapt across teams, and guide athletes beyond sport. Connect with Sammi on Instagram: @sammiryann or by email: sryan95@bu.edu | Find Eric on Instagram: @ericmcmahoncscs and LinkedIn: @ericmcmahoncscs Join the NSCA College Coaches Professional Development Group (PDG) to build your network, share ideas, and navigate challenges in college strength and conditioning.

Learn about expanding developmental pathways and career opportunities within Major League Soccer (MLS) in this episode of the NSCA Coaching Podcast. The Charlotte FC Head of Performance, Adam Parr, shares his experience with NSCA Coaching and Sport Science Program Manager, Eric McMahon, including the key relationships between strength and conditioning coaches, sport scientists, and international influences on the growth of soccer within North America. As athletes today become more accustomed to data feedback on their performance, Parr explains the process of effectively embedding technology in the team setting. Listen in to learn more about how you can break into a growing area of the field in professional soccer. You can connect with Adam on Instagram: @aparrfitness or LinkedIn: @adamcparr| Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

Law enforcement officers can experience psychological and physical stress in most of every part of their day, even starting from the first day of the academy. This article looks at Heart Rate Response in relation to stress, and interventions to manage stress through the academy.

This article provides a first-hand account of the usage and benefits of dumbbell training programs with athletes.

This article covers commonly used terminology from United States of America Weightlifting (USAW), plus it contains illustrations of the basic positions for weightlifting exercises.