This excerpt from Developing the Core briefly defines closed- and open-chain exercises and their respective roles in training.

The purpose of this article is to examine components that affect speed to determine the degree that speed is governed by skill versus genetic factors.

Kevin Neeld, Head Performance Coach of the Boston Bruins National Hockey League (NHL) team, joins the NSCA Coaching Podcast to share about strength and conditioning practices in the NHL. Neeld connects with NSCA Coaching and Sport Science Program Manager, Eric McMahon, on his path to working in professional hockey, the involvement of strength and conditioning at the annual NHL Draft Combine, and the partnership between the Strength and Conditioning Association of Professional Hockey (SCAPH) and the NSCA. The discussion includes perspectives for aspiring coaches about working in professional hockey, on-ice and off-ice training, and the recent growth of performance staffs. Connect with Kevin on Instagram: @kevinneeld or Twitter: @KevinNeeld| Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

This article discusses the background, statistics, mechanisms, timing, dosing, influences, and practical applications for the use of caffeine as an ergogenic aid.

This article sheds some knowledge on shoulder exercise modifications and progressions that can help reduce the risk of re-injury and maximize performance for clients.

This episode unites strength and conditioning perspectives across three continents. David Joyce and Dan Lewindon, the co-editors of High-Performance Training for Sports, discuss their new book, including the high-caliber list of expert contributors from around the world. Discussion centers on the expansion of performance environments to include new perspectives, and the increased need for professional collaboration to deliver maximally effective training programs. Learn about “Zombie Killers,” as Joyce and Lewindon share with NSCA Coaching and Sport Science Program Manager, Eric McMahon, in an episode that provides insight into everyday coaching practices. Find David on Twitter: @DavidGJoyce | Find Dan on Twitter: @DanLewindon | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

This article will highlight recent key dietary practices and provide practical applications for implementing these practices for firefighters.