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

A problem facing personal trainers is the lack of awareness needed to work with clients who suffer from attention deficit hyperactivity disorder (ADHD). This article aims to bring awareness of the symptoms of ADHD to personal trainers, discuss how they potentially affect training of various clients, and present programing considerations for training clients with ADHD.

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.

Lyndie Kelley, Coordinator of Strength and Conditioning at the University of New England (UNE), talks to the former NSCA Head Strength and Conditioning Coach, Scott Caulfield, about her journey from athlete to strength coach at UNE. Topics under discussion include coaching and mentoring a variety of athletes and students, finding creative solutions for things and being resourceful at the Division III level, and having a fully integrated team from the athletic staff all the way to the non-athletic administration. Find Lyndie on Instagram: @noreaster_strength | Find Scott on Instagram: @coachcaulfield

Potentially, an instability training program that first involves static balance and then progresses to dynamic balance activities would improve intrinsic balance. This improvement in balance would increase movement confidence, releasing the neuromuscular system from a stiffening strategy to more unimpeded motion, force, and power development.

This article takes a closer look at training strength and stiffness in connective tissues.

This excerpt from NSCA's Essentials of Tactical Strength and Conditioning explains the importance of wellness programs for tactical athletes.

Advice and guidance for firefighter-specific TSAC practitioners and trainers, including steps to building a health and wellness program for firefighters.

Musculoskeletal injuries are the primary source of disability in the United States military. With the integration of movement screens and the implementation of tactical strength and conditioning facilitators there can be success in reducing the amount of musculoskeletal injuries in the tactical populations.

This article emphasizes environmental and nutritional dimensions in which there is enough robust evidence to make meaningful recommendations for sustainable nutrition practices.