Bert Sorin, President and Co-Owner of Sorinex Exercise Equipment, talks to the NSCA Head Strength and Conditioning Coach, Scott Caulfield, about Bert Sorin’s upbringing and his experience being a collegiate athlete, how Sorinex is contributing to the field, and how TSAC is continuing to grow and improve.

Factors such as the types of exercises used, the number of muscle groups trained per session, the structure of the program, and the client’s training status and overall fitness level dictate training frequency.

Body composition is an important physical characteristic to consider for football players and their performance. Tyler Bosch goes over the various methods of measuring body composition, what the numbers really mean, and how they can be used to develop a player's training.

This second article of a two-part series continues the discussion of long-term athletic development (LTAD). This article provides practical application of the LTAD principles by examining two sample programs.

Annette Zapp, Lieutenant Firefighter in Chicago, talks to the Former NSCA Head Strength and Conditioning Coach, Scott Caulfield, about strength and conditioning in the firefighting niche. Topics under discussion include the perks of being a firefighter who is also a Certified Strength and Conditioning Specialist® (CSCS®) and Tactical Strength and Conditioning Facilitator® (TSAC-F®), the typical lifestyles and attitudes of firefighters in general, and common issues that they face both physically and mentally. Find Annette on Twitter: @FireSQFitness or Instagram: @FireSQFitness

This article discusses the effects of instability on force and velocity throughout the body.

High-Intensity Resistance and High-Impact Training and Bone Mineral Density—a Narrative Review: Part 1

The purpose of this article is to help both personal trainers and clients with seven main concepts within exercise physiology that will improve training effectiveness and assist in explaining the body’s response to exercise.

The purposes of assessment are to gather baseline data and to provide a basis for developing goals and effective exercise programs. Gathering and evaluating the various pieces of information give the personal trainer a broader perspective of the client. The process and the data collected assist the trainer in identifying potential areas of injury and reasonable starting points for recommended intensities and volumes of exercise based on the goals and fitness outcomes.