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Cal Dietz, Head Olympic Strength and Conditioning Coach for the University of Minnesota, explains how training is a process that takes time. He shares his insight into the most applicable adaptation and the most effective applications for tactical performance at the 2019 NSCA Tactical Annual Training.
Growth hormone release is affected by the type of resistance training protocol used, including the duration of rest periods. Short rest period types of workouts result in greater serum concentrations compared to long rest protocols of similar total work; however, at present it is not clear how the various molecular forms or types of growth hormones are affected by rest period duration.
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.
There are many factors, both personal and environmental, that play a role in the success of a training and diet program for an individual client. This article looks at the factors to be aware of and some solutions to finding the best fit program for an individual client.
Personal trainersExercise ScienceNutritionProgram designClient Consultation|Assessment
May 15, 2026by Annmarie Chizewski, PhD, CSCS, USAW, Joel Martin, PhD, CSCS,*D, CPSS, Lee Brown, PhD, CSCS, CSPS, TSAC-F, RSCC, Steve Ferrier, and Mick Jackson
This TSAC Report article discusses why female firefighters need sex-specific training to improve biomechanics, reduce injury risk, and support career sustainability. Visit NSCA online to read more about exercise science and occupational readiness.
TSAC FacilitatorsExercise ScienceExercise TechniqueProgram designOrganization and AdministrationTesting and EvaluationSafetyBasic Pathophysiology and Science of Health Status or Condition, Disorder, or DiseaseProfessional Development
Learn overtraining syndrome (OTS) risks, symptoms, and outcomes for tactical athletes from NSCA’s Essentials of Tactical Strength and Conditioning, 2nd Edition.
TSAC FacilitatorsExercise ScienceProgram designSafetyBasic Pathophysiology and Science of Health Status or Condition, Disorder, or Disease