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

This article reviews electromyography (EMG) procedures as well as provides examples of how EMG data analysis has been used in tactical populations.

Determining VO2max can be useful in all areas of health, from potential diagnosis of heart disease in the elderly to measuring peak performance in elite athletes. This article will discuss the physiological limiting factors of VO2max and the role each plays in cardiovascular improvement.

The VO2max test is the most effective measurement of the body’s ability to deliver and use oxygen for producing energy that can be used by the muscles. VO2max (i.e., maximum aerobic power) simply stands for the maximal volume of oxygen that can be used.

This book excerpt is an overview of the fundamentals to sprinting mechanics and technique. It also covers starting, acceleration, drive phase, recovery phase, and deceleration.

Football is evolving fast, and the coaches who keep pace are the ones who control what they can and win the little details. Ted Rath, Director of Sports Performance for the New Orleans Saints, reflects on over 15 years in the National Football League (NFL). He explains how training times, availability, and sheer athleticism have shifted with the game's expansion. Rath makes the case for gaining a well-rounded experience by coaching different sports, seeking knowledge, and being patient on your path. He also shares his linear progression approach to sport science that keeps new tools actionable and avoids technology overload. With players now arriving more educated and invested in their data, creating understanding and buy-in remains essential. Rath reveals that his coaching philosophy and culture starts with “leading yourself,” emphasizing ownership and helping others. Apply his perspective to protect availability, dial in the little details, and integrate sport science with purpose. Reach out to Ted on Instagram: @tedrathstrengthcoach | Find Eric on Instagram: @ericmcmahoncscs and LinkedIn: @ericmcmahoncscs Catch Ted’s session, “The Future of Training in Professional Football,” at the 2026 NSCA National Conference in New Orleans, July 8–11. Sign up early and save at NSCA.com/NSCACon.

The goal of this brief review is to describe what classifies as high-intensity interval training (HIIT) and summarize the potential benefits for various populations: athletic, general, and clinical.

Female athletes in the United States have made great progress in sports since Title IX was enacted in 1972. Despite the progress they have made, female athletes have yet to gain full recognition for their athleticism and their achievements. The purpose of this article is to break down the stigma female athletes have received over the years and shine light on the differences that make female athletes a reward to train.

When isolating aerobic capacity as a determinant of performance, traditional interventions have focused on increasing an individual’s VO2max. Based on the large acute improvements from a single positive psychology research study, investigations into the application of integrated psychophysiological strategies to optimize performance should be explored.

Tactical athletes, due to the nature of their jobs, may have sleeping problems (such as falling asleep and/or staying asleep) which is indicative of poor sleep quality. This article shares sleep hygiene strategies that can help tactical athletes achieve better rest.