This article is part of a continuing series of tactical strength and conditioning (TSAC) research reviews. It is designed to bring awareness to new research findings of relevance to tactical strength and conditioning communities.

The path to the top is not always linear. For Jill Costanza, it included returning to school and stops in collegiate and military performance before becoming Director of Sport Science and Assistant Strength and Conditioning Coach with the National Football League (NFL) Detroit Lions. Costanza describes today’s sport science landscape as a “Wild West,” where definitions differ by perspective. Her focus centers on assessing the athlete and program effectiveness against the demands of the game to identify holistic interventions. She outlines how intentional systems, a clear communication funnel, and data visualizations help athletes and stakeholders understand the “why,” build buy-in, and tap into competitiveness. Addressing common misconceptions, Costanza clarifies that elite athletes can still have foundational qualities that need rewiring. She emphasizes movement quality, proprioception, and breathing while adapting for individual needs and neurological fatigue. Learn how to build sport science systems, turn insights into action, and keep progressing on your professional path. Reach out to Jill by email at: jill.costanza@lions.nfl.net | Find Eric on Instagram: @ericmcmahoncscs and LinkedIn: @ericmcmahoncscs Join the NSCA Football Special Interest Group (SIG) and explore 24 other specialized communities designed to support your development on the Special Interest Groups page.

CC 2023

Periodization of training is based on the principle that different loads (e.g., light, moderate, or heavy) or power requirements recruit different types and numbers of motor units. Recruitment order is important from a practical standpoint for several reasons.

Football is a high intensity collision based sport that has an inherent risk of injury in both competition and practice. The focus of ACL injuries and the development of injury prevention programs have been key in the development of youth athletes to keep them participating in sport with reduced risk of injury.

This article presents the shoulder taps, which could serve as a more time-efficient screening tool for tactical operators. Although this article will present the shoulder taps as an assessment modality, it may be expanded upon and prescribed as an exercise for the purpose of improving trunk, hip, and shoulder stability.

This excerpt from NSCA’s Guide to Sport and Exercise Nutrition discusses carbohydrate loading strategies for athletes to achieve optimal athletic performance.

Before implementing an agility training program, baseline measures of change of direction ability should be assessed. This article presents norms for three tests that can be used to assess change of direction ability.

This article addresses low back pain in first responders by examining three relevant studies.

This infographic briefly reviews the differences in sprint velocity and technique, including stride length and hip, knee, and ankle flexion during a 20-meter resisted sprint.