The catecholamines—primarily epinephrine, but also norepinephrine and dopamine—are secreted by the adrenal medulla and are important for the acute expression of strength and power because the hormones act as central motor stimulators and peripheral vascular dilators to enhance enzyme systems and calcium release in muscle.

NSCA Tactical Program Managers, Jason Soileau (Military) and Mandy Nice (Public Safety), talk to the NSCA Coaching and Sport Science Program Manager, Eric McMahon, about supporting those in the tactical professions over the course of their careers. Topics under discussion include the U.S. Army Holistic Health and Fitness (H2F) program and developing a new tactical strength and conditioning program tool kit for public safety agencies. Find Jason and Mandy on Facebook: NSCA Tactical Strength and Conditioning SIG | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

This article features the recharge skate—an in-season hockey conditioning drill, designed by the authors, to maintain hockey-specific energy system fitness throughout the competitive season.

When it comes to traditional versus minimalist footwear, there are many considerations for injury risk. This article weighs the risks and benefits of both types of footwear from focusing on current literature on the subject.

Interest is growing in warm-up procedures that involve dynamic activities and sport-specific movements that maximize active ranges of motion at different movement-specific speeds while preparing the body for the demands of sport training and competition.

William Kraemer, PhD, CSCS,*D, spoke at the 2012 National Conference on the compatibility of training programs, addressing common problems and solutions.

This article in NSCA Coach examines practical strategies to mitigate LEA and enhance performance in female soccer players. Visit NSCA online to learn more on sports science and exercise research.

This article discusses the idea of Confucian adaptability as a framework for cultivating interpersonal skills for personal trainers.

In this session from the 2015 NSCA National Conference, Nelson Ayotte—the Strength and Conditioning Coach for the St. Louis Blues National Hockey League (NHL) team—explains how to design and implement a specific energy systems program at the elite level. Ayotte demonstrates the characteristics of each of the three energy systems and their trainability, and explores how to understand the energy demands of a sport by analysis of its characteristics, competition intensity, and duration of efforts and recovery periods.