This PTQ article focuses on the use of the back squat along with innovative technology to measure velocity during lower body lifts. Visit NSCA online to read more on personal training news and athletic performance.

This book excerpt from Developing Agility and Quickness describes the windows of opportunity in youth athletes to time progressions in speed and agility training with their biological and chronological development.

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.

CC 2020

“The goal of what we’re trying to do is make a difference in someone’s life,” says Gary Schofield in this session from the 2015 NSCA National Conference. Coach Schofield explains areas where you can make a difference for your athletes, including movement efficiency, recovery and regeneration, autoregulation, velocity-based training, and conditioning with purpose.

Considering the great popularity of eccentric-based training, the purpose of this review is to first provide the scientific rationale for its use; second, summarize the eccentric-based training modalities that can be used; and finally, offer practical recommendations on how to implement eccentricbased modalities to enhance sports performance. The molecular and neural mechanisms underlying eccentric actions are partially distinct from those of concentric and isometric actions. During eccentric actions, theories suggest a strain-induced modulation of actin-myosin interactions at the crossbridge level, activation of structural protein titin, and winding of titin on actin. Eccentric acute physiological responses differ from concentric exercise responses, including variations in neuromuscular, metabolic, hormonal, and anabolic signaling. Eccentric training elicits greater improvements in muscle strength, power, and stretch-shortening cycle function compared with concentric-only or traditional resistance training. Therefore, eccentric-based training can lead to unique neuromuscular (e.g., improved coordination of motor units) and morphological (e.g., increased muscle fascicle length and enhanced distal cross-sectional area) adaptations that could play a key role in sport performance. Practitioners may implement eccentric exercises with external loads, fully eccentric-based exercises (e.g., Nordic hamstring curl), accentuated eccentric loading, flywheel resistance exercise, and plyometrics to develop specific physical adaptations in line with their goals. Eccentric work (e.g., for hamstrings) can be obtained during other exercises such as downhill running tasks, decelerations, and sprinting activities. Practitioners need to be aware that no single “silver bullet” training modality exists; consequently, practitioners should use a combination of eccentric-based training approaches with their athletes to obtain the desired adaptations.

Acceleration and maximum speed are terms used in speed development programs, and when developing a program, it is vital to differentiate between the two. This allows coaches to target their training to the capacity most important in their own sport.

This excerpt from the NSCA’s Essentials of Sport Science, discusses some of the benefits and validity of Global Positioning Systems (GPS) data.

Learn practical programming ideas to implement in youth speed training programs. In this session from the NSCA’s 2017 National Conference, Lance Walker explains how to leverage the differences between starting, acceleration, and maximum velocity dynamics (movement preparation) and plyometrics. Learn about the most common errors made by young athletes when training linear speed with practical tools, teachings, and contextual cues.

Purchase the 2019 RSCC renewal course. - Achieve a minimum of 70% to renew your RSCC designation and earn 0.5 CEUs towards your certification.