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 which foot placement (staggered or parallel) provides better trunk stability when performing the barbell biceps curl exercise.

Swimming is a form of exercise that has minimal impact on body joints as it applies a lower amount of stress compared to other popular activities, such as walking. This article offers different methods of swimming that improve overall health aimed for the maturing adult.

Tactical athletes, due to the nature of their jobs, may have sleeping problems (such as falling asleep and/or staying asleep) which is indicative of poor sleep quality. This article shares sleep hygiene strategies that can help tactical athletes achieve better rest.

Acceleration and maximal velocity are two factors that are key for any position in football and can determine success in many situations out on the field. This article will review several aspects of sprint mechanics and training to enhance linear (straight-ahead) speed for football players.

The NSCA provides career-focused benefit videos designed to help members gain expert insight, knowledge and tips to help further their careers.Carwyn Sharp presents, "Taking Research to Practical Application"

This article will focus primarily on the physical fitness considerations of sailors aboard Canadian Patrol Frigates while out at sea.

The Physical Readiness Training Manual includes many exercises intended to keep military personnel in optimal physical condition while staying at a low risk to injury. Additionally, the application of progressive overload may be beneficial to periodization programming in ROTC cadet preparation for the Army Physical Fitness Test.

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