Connect with the NSCA to stay-up-to-date on the latest evidence-based strength and conditioning content, events, news and more.

Developing safe and effective exercise training programs requires the application of abundant training variables and the implementation of appropriate progression for each variable. Importantly, the outcomes of each training program are the product of these variables and their progression, so practitioners are keen to select methodologies and overload strategies that effectively support their target training outcomes. One such training variable is mechanical loading, which describes the forces of gravity, resistance, and muscle contraction and how these forces affect musculoskeletal adaptations. Numerous research articles and texts have been published regarding mechanical loading and its effects on exercise adaptations; however, these findings can be arduous to organize, which requires additional time investment by professionals. Developing a succinct system is critical because practitioners face clients and patients with a wide range of physical skills and challenges, and having an easily referenced loading guide may assist them in designing appropriate strength and conditioning or rehabilitation programs. Thus, the purpose of this review is to define and describe the mechanical loading continuum and its individual components to better assist the practitioner in identifying appropriate exercise modes and progression strategies.

The NSCA’s Podcasts are a great way to keep informed about strength and conditioning professions.

Strength coaches make up the foundation of the NSCA since its beginnings more than four decades ago and continue to drive our purpose and passion. Learn more about obtaining the acclaimed CSCS® certification, gain knowledge through NSCA's peer-reviewed journals, and get inspired by NSCA's coaching podcast. From tools and resources to thousands of top professionals across the globe, you've got the support and the credibility of an association dedicated to your profession.

NSCA-Certified Personal Trainers® (NSCA-CPT)® are health/fitness professionals who use an individualized approach to train clients for the primary goal of improving their personal health and fitness. Learn more about becoming a certified personal trainer with the NSCA's CPT certification! Visit NSCA.com for information on personal trainer jobs, personal training certifications, personal trainer insurance and continuing education as you pursue one of the best personal trainer certifications.

Before registering for the CPSS™ exam, you must first complete an application, submit your eligibility documents, and receive permission to test. Begin this process in advance of your desired testing date, as applications may take up to 30-days to process.

The history of how CASCE was formed.

Choose your path with new 2026 NSCA Performance Summits. Join us at one of four specialized strength and conditioning events across the U.S. and earn 0.8 CEUs.

Learn, participate and network with colleagues at (location) while earning CEUs. Hosted by the state, provincial and regional directors, this local event brings cutting-edge research and application to your backyard.