Joe Denk, Applied Sport Scientist and Strength and Conditioning Coach for Naval Special Warfare, talks to the NSCA Coaching and Sport Science Program Manager, Eric McMahon, about immediate and actionable sports science data for tactical athletes. Topics under discussion include the dynamic of working with tactical athletes, how resiliency and recovery are connected, and how technology has enabled coaches the ability to implement training programs effectively from a distance. Find Joe via Email: denkjc@gmail.com| Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

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.

Alex Calder, Head of Sports Science for the Houston Dynamo Major League Soccer (MLS) team, talks to the NSCA Coaching and Sport Science Program Manager, Eric McMahon, about sports science data driving better decisions on and off the field. Topics under discussion include the importance of traditional strength training for soccer players, as well as, the variety of strength and conditioning opportunities there are to gain experience from at the high school, college, private, and professional level of sports. Find Alex on Twitter: @calder_05 or Instagram: @calder_05 | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

This book excerpt discusses how to maximize sprint quality during training sessions.

Get NSCA's Essentials of Personal Training, Third Edition — a trusted resource for students, personal trainers, fitness professionals, and NSCA-CPT® exam prep.

Get NSCA's Essentials of Training Special Populations — a trusted resource for students, personal trainers, exercise science professionals, and CSPS® exam prep.

In today's National Football League (NFL) world, teams are always on the lookout for the best talent. That is why strength and conditioning coaches are crucial in optimizing a prospect's value. This special episode of the NSCA Coaching Podcast features NFL Combine expert, Bryan McCall, sharing details of coaching process leading up to the event. The conversation includes co-hosts Eric McMahon, the NSCA Coaching Program Manager, and Gatorade Team Sports Manager, Jon Jost. You will hear Coach McCall credit Coach Jost as an early career mentor and emphasize the importance of mentorship for all coaches. Learn how to make a successful year-round business of strength and conditioning and advance your coaching career with an entrepreneurial mindset. You can reach Coach McCall on Instagram: @justbmac_ or Twitter: @just_BryanM | Email Jon at: jonathan.jost@pepsico.com | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs To learn more and join the Gatorade Performance Partner Community, visit GatoradePerformancePartner.com.

Joe Kenn, Head Strength and Conditioning Coach for the Carolina Panthers, talks to the NSCA Head Strength and Conditioning Coach, Scott Caulfield, about… well… a little bit of everything.

Castle View High School Strength and Conditioning Coach says science is leading to safer training methods being used in high school weight rooms.