The purpose of this article is to discuss the various types of low-impact activities and their associated cardiovascular and musculoskeletal benefits.

Elite sport often gets more attention, but youth training gives strength and conditioning coaches an earlier chance to build athletes’ competence and confidence. Kelli Brightwell specializes in youth development and brings more than a decade of sports training experience, including four years at Michael Johnson Performance. Brightwell defines peak height velocity as the period during which height increases fastest. She then explains why its timing can differ among teammates of the same age. So what should strength coaches test, and what do the results mean? The answer changes with each athlete’s maturity and training experience. Brightwell addresses the growth-spurt “awkward phase,” when familiar movement patterns can break down as an athlete adjusts to a changing body. She also considers how sport sampling can expand children’s range of physical skills and help them discover what they enjoy. Learn how maturation can affect movement, testing, and programming — and why young athletes need foundations before specialization.

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

This article contains examples of how to periodize training programs to help aerobic endurance athletes reach their peak condition at the appropriate time of the year.

This is an excerpt from NSCA's Essentials of Sport Science by NSCA -National Strength & Conditioning Association, Duncan N. French & Lorena Torres-Ronda.

Courteney Benjamin and Yasuki Sekiguchi, from the Korey Stringer Institute, talk to the NSCA Head Strength and Conditioning Coach, Scott Caulfield, about preventing sudden death in the heat and how coaches can plan ahead, create, and respond with an emergency action plan. Find the Korey Stringer Institute on Twitter: @K_S_Institute | Find Scott on Instagram: @coachcaulfield

This excerpt describes plyometric training with regards to the stretch-shortening cycle.

It is important for coaches to understand the relationship between commonly measured variables (e.g., displacement, velocity, and force) and their relationship to the derived variable of power.

Research shows that the appropriate integration of resistance training into the endurance athlete’s training can result in significantly better performance when compared to classic endurance training plans that focus only on aerobic endurance.