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.

Verbal cues are tools used by practitioners in developing a youth athlete’s motor skill abilities. External cues may optimize athletic performance and movement competencies in adults with trends for youth athletic populations following suit. However, maturation, training age, and cognitive age may interact with the efficacy of cues used. To better assist practitioners working with youth, this article reviews current empirical evidence on how youth populations respond or may respond to cues and offers practical applications.

Spinal cord injury (SCI) is a result of disease or injury that results in the loss of sensory, motor, and autonomic function, or a combination of these functions below the level of injury. Research suggests that, along with medical treatment, exercise may aid in the maintaining of cardiovascular, muscular, and osteogenic health in individuals with an SCI. Practices, contraindications, special considerations, and general recommendations for whole-body cardiorespiratory and resistance exercise programming and progression for individuals with an SCI are discussed throughout.

This article provides the personal trainer with sample exercise progressions for teaching resistance training movement patterns along with practical strategies for instruction and reinforcement of proper technique.

To address and combat neurocognitive decline in tactical personnel, this article will detail the mechanistic underpinnings of, and describe how to apply, attention regulation strategies to facilitate greater skill acquisition, retention, and performance transfer.

Congratulations to the 2021 NSCA Award Winners!

Integrating unbalanced load training into a strength or hypertrophy phase, or any workout program, can add a tremendous amount of demand on the lateral aspects of the core to help the athlete develop a strong core. Using unbalanced load training may help produce increases in athleticism, balance, and motor coordination without sacrificing strength or explosiveness.

The purpose of this article is to discuss the different opinions regarding the validity of early sport specialization as opposed to diversification, specifically the effect these two methods have on injuries, motor development, skill acquisition, and social and psychological aspects.

In this video from the NSCA's 2014 TSAC Conference, Jason Dudley, CSCS, discusses the importance of recognizing the skills that are unique to specialized law enforcement units. Coach Dudley talks about using knowledge and a proven approach to train these tactical athletes.

In this first of a five-part series, Rachel Balkovec—the first female strength and conditioning coach in the history of professional baseball—provides an overview of her journey and how she got into professional baseball. This video starts with her recruitment by the University of New Mexico and includes her journeys to the Dominican Republic.