The catecholamines—primarily epinephrine, but also norepinephrine and dopamine—are secreted by the adrenal medulla and are important for the acute expression of strength and power because the hormones act as central motor stimulators and peripheral vascular dilators to enhance enzyme systems and calcium release in muscle.

This article discusses what muscle dysmorphia is, the ways in which adolescents can fall victim to it, and how to intervene when body image becomes distorted.

This article in PTQ 11.4 shares the latest fitness news to provide personal trainers with strategies for perimenopausal clients. Visit NSCA online to read articles on exercise science and fitness.

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

This article describes how introduction of evidence-based practices requires today’s fitness professional to raise the bar of his or her education and analytical experience by actively and consistently using techniques of research in order to perform their job as a fitness professional.

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

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.

From the Essentials of Strength Training and Conditioning, this book excerpt explains the various stages of tissue healing in the rehabilitation process.

This Personal Training Quarterly article discusses how myofascial techniques can reduce pain, improve mobility, and enhance quality of life for women in breast cancer recovery. Visit NSCA online to read more on recovery, health and fitness.

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.