This research review covers topics such as the effects of police officer equipment loads, military occupational specialties, and the effects of protective clothing and self-contained breathing apparatus for firefighters.

Periodization of training is based on the principle that different loads (e.g., light, moderate, or heavy) or power requirements recruit different types and numbers of motor units. Recruitment order is important from a practical standpoint for several reasons.

Periodization of training is based on the principle that different loads (e.g., light, moderate, or heavy) or power requirements recruit different types and numbers of motor units. Recruitment order is important from a practical standpoint for several reasons.

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

This Kinetic Select from Developing the Core reviews the effects of muscle activity when performing exercises on unstable surfaces.

It is apparent that speed plays a vital role in successful baseball performance. Because of the short distances involved in the game, players rarely, if ever, achieve maximum speed and in actuality, it is acceleration that plays a much greater role in baseball.

During the initial interview, the personal trainer and client assess compatibility, develop goals, and establish a client-trainer agreement.

This article will examine the physical demands of soccer players and discuss why repeated sprint ability (RSA) is considered highly important in the performance of these athletes.