Various methods of eccentric training that aim to increase muscle mass or reduce ground contact time during a landing task have been extensively researched and practically examined. However, multiple methods to implement eccentric training currently exist; they differ in execution and intended training adaptions. There is a clear differentiation between an eccentric muscle action and an eccentric motion whereby a motion alludes to a downward movement of an exercise. The proposed eccentric motions are dissipating eccentrics, deceleration eccentrics, overcoming eccentrics, maximal eccentrics, and rebound eccentrics. These motions formulate into training methods and cues to allow practitioners to clearly differentiate the various eccentric training methods used in research and practice. This review proposes a new conceptual framework that clearly outlines the different forms of eccentric motions that fall into a desired eccentric training method.

Learn about a unique path into strength and conditioning from J. Aggabao, the Associate Athletic Director of Sports Performance at Santa Clara University (SCU). Aggabao shares insights on coaching pathways and hiring, with NSCA Coaching and Sport Science Program Manager, Eric McMahon, that includes service in the United States Navy, working in the National Football League (NFL), and progressing into a department leadership role at SCU. From networking in the strength and conditioning field to beyond the campus and athletic communities, this episode speaks to various career stages, from aspiring strength and conditioning coaches seeking their first jobs, to experienced professionals aiming to become effective leaders. Reach out to Coach Aggabao on Instagram: @j.aggabao, or by email at jaggabao@scu.edu | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

This episode features Corliss Fingers, the Director of Strength and Conditioning at Bethune-Cookman University. She talks with NSCA Coaching and Sport Science Program Manager, Eric McMahon, about her journey in a predominantly male strength and conditioning profession. This episode speaks to the value of a strength and conditioning coach at the college level, as Fingers shares about preparing athletes in the extreme heat and humidity of Florida during pre-season football. She also recaps her presentation at the 2022 NSCA National Conference in New Orleans, LA, discussing representation around diversity, equity, and inclusion for athletes and coaches. You can reach out to Corliss on Twitter: @CorlissFingers or by email at fingersc@cookman.edu | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

Hear from strength and conditioning coach, Tim Caron, on his path from collegiate strength and conditioning into a unique private sector business model in the Los Angeles, CA area. Caron connects with NSCA Coaching and Sport Science Program Manager, Eric McMahon, to discuss the potential role of sport science in the private sector with general population clients. This episode is full of training insights for coaches to re-engage their thought process around working with groups and teams. In addition, Caron shares the origins of his new book, Strength Deficit, on considerations for concentric and eccentric strength training. You can reach Tim on Instagram at @coachtimcaron or Twitter at @coachtimcaron | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

Explore the applied sport science research process in college baseball, and how academic research can be optimized to benefit player programming. This episode features Dr. David Szymanski, the Director of Baseball Performance at Louisiana Tech University, and co-editor of the recently published book NSCA’s Strength Training for Baseball. Hear about Szymanski’s career path, from college baseball player to coach and sport scientist. This episode covers a wide range of relevant topics, including exercise selection, performance technology, student pathways, and the emergence of performance director roles across Major League Baseball (MLB). Find David on Instagram: @drdavidszymanski or at his program website: LA Tech Sport Science| Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

Learn from a coach who took his career from working with Winter Olympic and professional sport athletes to success in the private sector. In this episode, Bret Kelly of Exos and formerly United States Ski and Snowboard, shares about his journey and the need for coaches to remain versatile in growing their professional skills in the field. Tune in as Kelly connects with Eric McMahon, the NSCA Coaching and Sport Science Program Manager, on seeking out opportunities to work in niche Olympic sports, the growing uses of performance technology, and the value of building a strong support staff. Find Bret on Instagram: @bk_strengthcoach and on Twitter: @bret_kelly_ | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

Eccentric resistance training has been shown to elicit beneficial effects on performance and injury prevention in sports because of its specific muscular and neural adaptations. Within the different methods used to generate eccentric overload, flywheel eccentric training has gained interest in recent years because of its advantages over other methods such as its portability, the ample exercise variety it allows and its accommodated resistance. Only a limited number of studies that use flywheel devices provide enough evidence to support the presence of eccentric overload. There is limited guidance on the practical implementation of flywheel eccentric training in the current literature. In this article, we provide literature to support the use of flywheel eccentric training and present practical guidelines to develop exercises that allow eccentric overload.

This course is an introduction to force plates and performance testing. This course covers the basics of setup and calibration of force plates, and then walks through several fundamental performance tests including squat jumps, countermovement jumps, drop jumps and loaded jumps. Two versions of the isometric mid-thigh pull as well as an isometric squat are also covered in the course. Real-time data collection from the software is also shown as the athletes are performing the tests. A module on data analysis rounds out the course, which includes five metrics collected from the force plate, as well as calculations from this data, including relative strength index - modified, and dynamic strength index.

This article outlines a potential learning course intended for students in undergraduate criminal justice and homeland security majors to improve their physical health literacy and health-related behaviors.

The third and final article in this series will introduce the practical and technical elements of heart rate variability (HRV) monitoring in greater depth and detail.