Personal trainers should be aware of the physiological changes during pregnancy for each trimester in order to provide appropriate exercise modifications and alternatives for their prenatal clients, to positively influence overall health.

Dr. Sara Erdner, author of “Dear Coach: What I Wish I Could Have Told You, Letters from Your Athletes,” talks to the NSCA Coaching and Sport Science Program Manager, Eric McMahon, about the coach-athlete relationship. Topics under discussion include coaching education, giving athletes a platform to be heard, and what truly builds mental toughness and resiliency. Find Dr. Erdner on Twitter: @doc_serdner | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

Developing Power brings an explosive take on the push-up and explains the technique behind the depth-drop push-up for upper body power development.

This article will present a sample program that was implemented successfully by a group of older women in competition, and discuss the general exercise principles utilized to increase BMD in postmenopausal women.

This book excerpt explains how to perform the box step-off landing assessment, which is used to determine an athlete’s readiness before beginning a program in agility and quickness.

This excerpt from NSCA’s Guide to Sport and Exercise Nutrition discusses the research surrounding the timing of hydration and its impact on sport performance for those participating in aerobic endurance exercise.

This excerpt from NSCA's Essentials of Tactical Strength and Conditioning explains the importance of wellness programs for tactical athletes.

This article presents two football-specific speed drills in detail—the single-leg box explosion and the mountain climber.

The purpose of this article is to examine which foot placement (staggered or parallel) provides better trunk stability when performing the barbell biceps curl exercise.

This excerpt from Developing the Core explains core exercises unique to baseball and softball.