Lawrence Herrera, owner and founder of LH Performance, talks to the NSCA Head Strength and Conditioning Coach, Scott Caulfield, about how strong is strong enough, keeping the training simple, and relating to athletes and coaches.

Dave Terry, Associate Director of Sports Performance at Georgetown University, talks to the former NSCA Head Strength and Conditioning Coach, Scott Caulfield, about his time at Georgetown and the value of mentorship. Topics under discussion include building the intern program, creating relationships with the athletes, and different ways to think creatively, learn, and grow as a strength coach. Find Dave on Instagram: @daveterry16

Alex Calder, Head of Sports Science for the Houston Dynamo Major League Soccer (MLS) team, talks to the NSCA Coaching and Sport Science Program Manager, Eric McMahon, about sports science data driving better decisions on and off the field. Topics under discussion include the importance of traditional strength training for soccer players, as well as, the variety of strength and conditioning opportunities there are to gain experience from at the high school, college, private, and professional level of sports. Find Alex on Twitter: @calder_05 or Instagram: @calder_05 | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

Kayleigh Fournier, now Assistant Director of Strength and Conditioning at Dartmouth College, talks to the former NSCA Head Strength and Conditioning Coach, Scott Caulfield, about her journey from unpaid intern to head strength coach. Topics under discussion include work ethic as a young professional getting into the field, programming for unconventional sports, and diversifying your network of support. Connect with Kayleigh through email: kayleigh.fournier@dartmouth.edu

Gary Boros, Assistant Sport Performance Coach at the University of Denver, talks to the NSCA Head Strength and Conditioning Coach, Scott Caulfield, about being flexible in your programming and with your staff, not always grinding your athletes into the ground, and the need to learn from others.

The purpose of this article is to review the related literature that has explored the influence of resistance training programs on the onset of fatigue and muscular power as it relates to non-contact high-intensity intermittent sports, in order to provide suggestions for creating same-day training programs.

Learn from a coach who took his career from working with Winter Olympic and professional sport athletes to success in the private sector. In this episode, Bret Kelly of Exos and formerly United States Ski and Snowboard, shares about his journey and the need for coaches to remain versatile in growing their professional skills in the field. Tune in as Kelly connects with Eric McMahon, the NSCA Coaching and Sport Science Program Manager, on seeking out opportunities to work in niche Olympic sports, the growing uses of performance technology, and the value of building a strong support staff. Find Bret on Instagram: @bk_strengthcoach and on Twitter: @bret_kelly_ | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

This excerpt from Developing the Core briefly defines closed- and open-chain exercises and their respective roles in training.