The purpose of this article is to define the roles of personal trainers and physical therapists and to learn how their combined expertise can influence long-term physical health improvements for their clients.

Matt Rhea, PhD, CSCS,*D, speaks at the 2013 Personal Trainers Conference on strength training for endurance athletes.

This excerpt from NSCA’s Essentials of Personal Training discusses the importance of education on proper running surfaces, appropriate footwear, and the benefits of cross-training in addressing overuse of the knee.

Ryan Metzger, Senior Assistant Strength and Conditioning Coach for Clemson University, talks to the NSCA Coaching Program Manager, Eric McMahon, about their internship program going virtual amidst the pandemic to provide young strength coaches the education they need to grow despite the lack of in-person training. Topics of discussion also include early sport specialization and burnout, as well as being a role model for female athletes. Find Ryan on Instagram: @clemsonolystrength or @coach_metz | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

The periodization of training is facilitated by a hierarchical structure that allows for several distinct interrelated levels that can be used in the planning process. Each level of the periodization process should be based on the training goals established for the athlete or team.

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

Do interlimb asymmetries impact performance and what are some training programs to reduce them?

This excerpt briefly explains the benefits of exercise while pregnant.

Strength and conditioning coaches should strive to teach athletes in a way they can understand: by hearing, seeing, and practicing. This article describes some techniques that a coach can use to accomplish this.