This article defines and reviews the allostatic load theory in tactical personnel.

This article examines tactical strength and conditioning, highlighting professional development, evidence-based strategies to enhance readiness and performance, and approaches that support long-term health outcomes in tactical populations. Visit NSCA online to read more on tactical strength training and human performance.

The purpose of this article is to identify and discuss some barriers and benefits of training initiatives among professional firefighters.

This article from Personal Training Quarterly looks at training plans based on menstrual health to help personal trainers better support female clients. Visit NSCA online to read more on athletic performance, health, and fitness.

Elite sport often gets more attention, but youth training gives strength and conditioning coaches an earlier chance to build athletes’ competence and confidence. Kelli Brightwell specializes in youth development and brings more than a decade of sports training experience, including four years at Michael Johnson Performance. Brightwell defines peak height velocity as the period during which height increases fastest. She then explains why its timing can differ among teammates of the same age. So what should strength coaches test, and what do the results mean? The answer changes with each athlete’s maturity and training experience. Brightwell addresses the growth-spurt “awkward phase,” when familiar movement patterns can break down as an athlete adjusts to a changing body. She also considers how sport sampling can expand children’s range of physical skills and help them discover what they enjoy. Learn how maturation can affect movement, testing, and programming — and why young athletes need foundations before specialization.

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.

This article will provide some conditions and standards with specific tools personal trainers may consider using in their initial interview with potential clients.

The third and final article in this series will introduce the practical and technical elements of heart rate variability (HRV) monitoring in greater depth and detail.

Part 2 of this series on allostatic load theory will focus on how monitoring personnel holistically can contribute to a well-rounded health and performance model supporting the tactical athletes.

This article discusses how first responder organizations can optimize their training programs through scientific techniques, including the measurement of training load.