This excerpt briefly describes key aspects of this nonessential amino acid including its effect on the body, efficacy, and adverse effects.

This excerpt from Developing the Core gives a quick look into why a stable trunk is so important for swimming athletes.

Occupational police tests described in the literature can serve as indicators of the occupational performance of their employees. In addition, practitioners in charge of police training should develop and employ obstacle courses composed of critical work tasks, as they may be strongly related to tests of aerobic endurance, strength, muscular endurance, and agility.

Decompressing after a workout, practice, or competition is a beneficial habit that can be achieved through breathing. This article provides an overview of the autonomic nervous system and guidelines for how to use breathing to calm, or balance, the brain and body.

This article will analyze and compare squats with different loading positions to draw out practical applications for the personal trainer.

This article discusses performance under stress, as well as factors influencing this performance in tactical personnel.

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

Youth practitioners need to be aware of the competing demands on young athletes’ lives in order to help them effectively balance these demands. Wellness provides a reference point that can be used to better understand the competing demands placed on youngsters by identifying the six dimensions of wellness.

Given the growing interest surrounding youth strength and conditioning, the NSCA recently engaged a group of leading experts to author a position statement on long-term athletic development. The document proposes ten key pillars of successful long-term athletic development that practitioners should adhere to in order to enhance performance, promote health and well-being, and minimize the risk of sport- or physical activity-related injury.