Flexibility training is important because of the role that flexibility plays in improving movement performance and reducing the opportunity for injury. Learn more about the role of flexibility training in this exclusive excerpt from the book NSCA's Essentials of Personal Training, Second Edition, published by Human Kinetics.

The U.S. Department of Health and Human Services (HHS) recently recognized the National Strength and Conditioning Association (NSCA) as one of the first organizations to join the National Youth Sports Strategy (NYSS) Champion℠ program. HHS released the NYSS in September 2019 in response to Presidential Executive Order 13824, which called for a national strategy to increase youth sports participation. The NYSS is the first Federal roadmap with actionable strategies to increase participation in youth sports, increase awareness of the benefits of youth sports participation, monitor and evaluate youth sports participation, and recruit and engage volunteers in youth sports programming.

This article will focus on the management of the physical training process of US Air Force Special Warfare candidates, with relevant information geared toward the specific demands seen within the first phases of a Special Warfare Operator’s development.

The purpose of this article is to present normative data that has been previously collected for the 75PR, use the data to create informed training practices, and support the need for further research of this particular topic in law enforcement.

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This article will discuss the balance between what an aspiring bodybuilder may expect from a personal trainer, what a personal trainer is able to provide, and how a personal trainer can be a valuable asset towards the aspiring bodybuilder’s development.

Unite with our strength and conditioning community at the 2026 NSCA National Conference in New Orleans. Learn hands-on, apply new science, + earn up to 3.0 CEUs

This excerpt briefly discusses components of interval workouts, including recommended volume and intensity, to increase overall endurance in athletes.