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.

Hybrid fitness competitions such as HYROX have rapidly gained popularity, blending aerobic endurance running with a variety of high-intensity resistance and ergometer-based stations in a globally standardized format. The sport’s unique structure, comprising eight 1-kilometer runs interspersed with diverse workload stations, presents distinct physiologic, biomechanical, and technical demands. This review synthesizes existing research on hybrid fitness events to identify the key determinants of HYROX performance, emphasizing aerobic capacity, anaerobic power, local muscular endurance, and maximal strength. The aerobic system is foundational, enabling recovery between high-intensity efforts and sustaining performance during the event’s prolonged duration. Conversely, anaerobic capacity is critical for executing the high-intensity efforts demanded by each fitness station. Local muscular endurance supports repeated submaximal contractions, while strength and power underpin performance in movements such as sled pushes and running economy. Technical proficiency and injury prevention strategies are also discussed, alongside targeted programming recommendations, including high-intensity interval training, circuit training, and blood flow restriction methods. Despite its growing popularity, limited sport-specific research exists, necessitating further investigation to refine training and performance strategies. This review provides a comprehensive framework for athletes and coaches to optimize preparation and performance in HYROX, contributing to the broader understanding of hybrid fitness competitions.

This TSAC Report article highlights the need for recovery strategies to support both physical readiness and psychological resilience in military training. Visit NSCA online to learn more about tactical athletes.

This article discusses the importance of upper body power training for protective security personnel and its potential for an occupational performance marker.

This narrative review will focus on the research related to tactical load carriage and on a program recommendation to maximize strength and endurance adaptations in Special Operations Forces (SOF).

This article examines using the sled as a dynamic correspondence exercise for increasing on-ice acceleration.

Deloading is widespread, but its application is often inconsistent and undervalued. That gap caught Lee Bell’s attention after discovering there was no consensus definition. Bell is a Senior Lecturer at Sheffield Hallam University who focuses on the deloading, overtraining, and overreaching spectrum. He explains how overtraining and overreaching are sometimes used synonymously. That confusion is compounded further by associations with overtraining syndrome (OTS). Instead, Bell frames overreaching as a “window of opportunity” when used intentionally. For example, a planned overreach can be functional or non-functional based on recovery. Bell also examines opportunities and tradeoffs in modern periodization models. He contrasts flexible and fluid approaches with more traditional, rigid programming; each approach has implications for athlete trust and recovery. Looking ahead, Bell envisions a collaborative approach to sport science driven by coaching needs. He reflects on recent coaching survey data and the key themes that emerged for the future. Hear his perspective on next steps in velocity-based training, individualized periodization, and variability. Reach out to Lee via Instagram: @lee3ell and LinkedIn: @lee-bell| Find Eric on Instagram: @ericmcmahoncscs and LinkedIn: @ericmcmahoncscs → Read the SCJ article co-authored by Lee Bell referenced in this episode: A Practical Approach to Deloading: Recommendations and Considerations for Strength and Physique Sports.

This article is a personal perspective of creating and providing a fitness assessment and resistance training program from scratch to a large law enforcement organization.

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 help both personal trainers and clients with seven main concepts within exercise physiology that will improve training effectiveness and assist in explaining the body’s response to exercise.