This article applies LTAD principles to guide the process of generating an athletic profile (part 1) and sample program design (part 2) for a middle school athlete and a high school athlete.

Long-Term Athletic Development (LTAD) models have provided a youth sport framework for more than 2 decades, aimed at improving skill progression, training outcomes, and athlete preparation. Although influential, traditional LTAD approaches are limited by their sport-centric orientation, linear design, and focus on elite performance, leaving them less relevant for most youth and adults who do not pursue competitive sport. In response, we propose reframing LTAD as Long-Term Activity Development (LTActD), an accessible and flexible model designed to promote lifelong engagement in physical activity, including recreation, exercise, and sport. LTActD emphasizes 5 dynamic phases—Explore, Develop, Apply, Sustain, and Thrive—that accommodate diverse pathways, periods of inactivity, and opportunities to re-enter active living at any age. Represented as a curvy road, the new model underscores that participation in physical activity is rarely linear, more like a winding journey shaped by health, motivation, environment, and social context. LTActD bridges sport science and public health, positioning physical activity as a lifelong resource for health, independence, and fulfillment. LTActD offers a practical framework to empower individuals of all ages and abilities to discover meaningful ways to move, re-engage, and embrace active living throughout the life course.

Strength and conditioning professionals who incorporate a properly designed and supervised training program can help their young athletes train, compete, and reduce the likelihood of injury.

This infographic breaks down training on different surfaces and how they affect performance outcomes.

Early sports specialization has been a controversial topic in the field of sports medicine, training, and conditioning. Recent studies report increased sports-related injuries in single-sport specialized athletes compared with multisport specialized athletes.

Learn about the education and experience requirements for the Certified Performance and Sport Scientist certification. The NSCA's CPSS requirements allow for three different eligibility routes based on your level of post-secondary education.

This excerpt from Developing Agility and Quickness aims to provide a snapshot of programming volleyball-specific agility and quickness sessions.

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

A qualified strength and conditioning professional in the high school environment can benefit both the school and the students in a number of ways, including injury reduction, improved performance, and risk management.