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Notice: The NSCA website is scheduled to undergo system maintenance from 12:00 AM - 2:30 AM EST. During this time, there may be short service interruptions across the site and some parts of the site may not be accessible. We apologize for any inconvenience while we work to improve the website experience and security.
Login Update: Your email address is now required as your username when signing in.
If you need assistance logging in, please contact our support team through the Contact Us form. Thank you for your patience.
Join the 2026 NSCA Training for the Endurance Athlete Summit in Tempe, AZ, on March 28. Explore endurance training performance, learn hands-on, + earn 0.8 CEUs.
Knowing when to train and how much time to devote to training each of the three energy systems is an important ingredient of success in endurance sports. This knowledge is also reflected in a well-designed and scientifically-based training plan.
This article discusses training strategies for law enforcement officers, including strength training, fitness scaling, and readiness programs that improve performance and career-long operational effectiveness. Visit NSCA online to read more on strength training and law enforcement officer fitness
TSAC FacilitatorsExercise ScienceExercise TechniqueProgram designOrganization and AdministrationTesting and EvaluationClient Consultation|AssessmentSafetyBasic Pathophysiology and Science of Health Status or Condition, Disorder, or DiseaseProfessional Development
This Kinetic Select from NSCA’s Essentials of Personal Training, Second Edition gives a brief overview of respiratory adaptations, and how aerobic interventions of duration and intensity can be used for specific adaptations for endurance training.
Personal trainersCoachesExercise ScienceProgram design
The VO2max test is the most effective measurement of the body’s ability to deliver and use oxygen for producing energy that can be used by the muscles. VO2max (i.e., maximum aerobic power) simply stands for the maximal volume of oxygen that can be used.
Live high/train low: what changes can be expected, what dose is required, and is it preferable to other training models for improving performance in endurance sports such as running, swimming, and cycling?