Body composition is an important physical characteristic to consider for football players and their performance. Tyler Bosch goes over the various methods of measuring body composition, what the numbers really mean, and how they can be used to develop a player's training.

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.

Lyndie Kelley, Coordinator of Strength and Conditioning at the University of New England (UNE), talks to the former NSCA Head Strength and Conditioning Coach, Scott Caulfield, about her journey from athlete to strength coach at UNE. Topics under discussion include coaching and mentoring a variety of athletes and students, finding creative solutions for things and being resourceful at the Division III level, and having a fully integrated team from the athletic staff all the way to the non-athletic administration. Find Lyndie on Instagram: @noreaster_strength | Find Scott on Instagram: @coachcaulfield

Matt Wenning a renowned power lifter and strength and conditioning coach who has over 12,000 hours of experience as a Division I college strength coach in a variety of sports, including football, track and field, swimming, baseball, as well as United States Army Rangers, firefighters, triathletes, and general populations. Matt talks to the NSCA’s Head Strength and Conditioning Coach, Scott Caulfield. Matt’s discusses the obstacles he had to go through both academically (undergrad and grad school) and physically (powerlifting) to get where he is today.

Dr. Patrick Ivey, Associate Athletics Director for Student Athlete Health and Performance at the University of Louisville, talks to the NSCA Coaching and Sport Science Program Manager, Eric McMahon, about the transition from strength coach to a director role in administration. Topics under discussion include perceptions of strength coaches, emotional intelligence, and continuing to grow where you are. Find Dr. Ivey on his website: pativey.com | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

This is an excerpt from NSCA's Essentials of Sport Science by NSCA -National Strength & Conditioning Association, Duncan N. French & Lorena Torres-Ronda.

Mike Hill, Associate Athletics Director of Sports Performance at Georgetown University, talks to the former NSCA Head Strength and Conditioning Coach, Scott Caulfield, about his journey from volunteer intern to director at Georgetown. Topics under discussion include being an integral, “off the bench” part of a team, what he looks for in new interns or new hires, and continuing education through reading and being a part of the NSCA’s Exam Development Committee. Find Mike on Instagram: @license_2_hill

The purpose of this article is to briefly identify the expectation dynamic for strength and conditioning practitioners and to provide a practical mode for operational thought.

Andrea Hudy, now the Head Men’s Basketball Strength and Conditioning Coach for the University of Texas, talks to the former NSCA Head Strength and Conditioning Coach, Scott Caulfield, about how she got into strength and conditioning. Topics under discussion include the collaborative efforts of the sports medicine team and doctors during her time at the University of Kansas, how she was hired, writing her book and continuing her education, and the value of hosting clinics. Find Andrea on Twitter: @A_Hudy

This excerpt from NSCA’s Essential of Tactical Strength and Conditioning explores the neural and muscular adaptations to training over time.