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

C. Keith Harrison, Associate Program Director and Associate Professor of Sport Business Management for the University of Central Florida, talks at the 2015 National Conference about coaching and training in a multicultural environment. Harrison discusses his background and diversity in society, and engages the audience on diversity within the coaching and training environment.

Trainer Tips are infographics designed to help you, an NSCA professional, educate clients and promote your services. These member-only resources can be used for client education, motivation, and promotion.

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.

Coach Jay Spearman’s mission is to have a positive, lifelong impact on his students.

This article briefly describes how individuals can have the same training program, but have large fluctuations in the adaptation responses due to genetic and life style factors.

Football is a high intensity collision based sport that has an inherent risk of injury in both competition and practice. The focus of ACL injuries and the development of injury prevention programs have been key in the development of youth athletes to keep them participating in sport with reduced risk of injury.

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This article breaks down youth training. To develop athleticism for youth, coaches should follow the C.O.R.E. principles: context in which to apply movement patterns, opportunities to develop proper movement, recognition of physical attributes required, and environments in which youth explore movement.

What does LTAD mean and how can parents get more involved with their child’s athletic development? Rick Howard provides an overview of youth development, important concepts to understand, ways to impact physical development, signs of overtraining, and further resources that are a great refresher for coaches and can be passed onto parents.