This article summarizes current populations and descriptions of sedentariness and deconditioning, and offers practical considerations for personal trainers working with these behaviors.

This article will review the latest evidence regarding optimal rest intervals, and the science behind them.

This article will discuss specific measures of stress that can be monitored, as well as coping skills to mitigate the negative effects of stress.

This article defines and reviews the allostatic load theory in tactical personnel.

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.

This article identifies considerations and practical training ideas for training sedentary populations.

With almost one million people in the United States living with multiple sclerosis, this article aims to provide personal trainers with ideas for exercises to meet the needs of these individuals.

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.

Certified Special Population Specialists® (CSPS®) are fitness professionals who, using an individualized approach, assess, motivate, educate, and train special population clients, including those with chronic and temporary health conditions. Become a certified personal trainer, then pursue this advanced personal trainer certification. CSPS® individuals train clients with medical conditions such as metabolic disease, autoimmune disorders, cancer and cardiac arrest, and address the needs of prenatal and postpartum personal training clients.

Occupational police tests described in the literature can serve as indicators of the occupational performance of their employees. In addition, practitioners in charge of police training should develop and employ obstacle courses composed of critical work tasks, as they may be strongly related to tests of aerobic endurance, strength, muscular endurance, and agility.