This short excerpt from Developing the Core details the importance of training the core musculature in tennis athletes.

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 article briefly reviews the importance of the stretch-shortening cycle in power production.

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.

This article discusses the effects of instability on force and velocity throughout the body.

Plyometric training is a series of explosive bodyweight resistance exercises using the stretch-shortening cycle of the muscle fiber to enhance physical capacities, such as speed, strength, and power. These physiological measures translate to improved performance in many sports, including court-based sports, field sports, and water sports.

The following article is an example training program that was built based on personal experience and research for an in-season soccer athlete.

Ground-based free weight lifts, especially the explosive Olympic-style lifts, are highly recommended for athletic conditioning for the core muscles. They can provide a moderately unstable stimulus to augment activation of the core and limb muscles, while still providing maximal or near maximal strength, velocity, and power output.

Sled exercises provide a training stimulus that closely mimics real-world physical demands of sports. This article provides examples of how to implement sled training into a program.

This book excerpt provides a step-by-step breakdown of the movements of the power snatch, from the starting position to the downward movement.