If manipulation of the training variables is not tailored correctly to the desired adaptations and specific training goals, an athlete can experience symptoms of nonfunctional overreach. If this process continues, the athlete can develop overtraining syndrome.

Dr. Lorena Torres Ronda, co-editor of the new NSCA’s Essentials of Sport Science textbook, talks to the NSCA Coaching and Sport Science Program Manager, Eric McMahon, about creating the textbook and how the Certified Performance and Sport Scientist® (CPSS®) certification will benefit the field. Topics under discussion include the use of technology in sport and the specific role that strength coaches play in supporting better performance and recovery decisions. Find Dr. Lorena Torres Ronda on Twitter: @lorenatorres07 | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

In this 2018 coaches conference video Todd Hamer describes his experience working with collegiate football players, and his methods for targeting appropriate energy systems to increase athletic performance in speed and conditioning.

In this session from the 2017 NSCA National Conference, Mike Stone explains what rate of force development (RFD) is, how it is derived, and the underlying mechanisms affecting RFD.

This infographic explains the acute and chronic responses of velocity-based training (VBT). This is the third and final infographic of a three-part series explaining the theory behind and application of VBT.

Studies support the use of kettlebells for improving power, although evidence for using them to improve strength and aerobic fitness is still equivocal. Studies investigating the biomechanical properties of kettlebell training have been fruitful, and it may be useful for developing sprint running performance and for injury prevention.

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.

This article explains the connections between the upper and lower body and their influence on performance and recovery strategies in sprinting.

Brett Bartholomew talks about the risks posed to athletes who are partaking in randomized and unstructured training practices often supervised by non-certified professionals. This session from the NSCA’s 2017 Coaches Conference will help you identify ways in which a “skills not drills” approach towards movement training design can not only lead to enhanced transfer of training to the competitive environment, but also better retention on behalf of the athlete as they progress through future training.

This article reviews electromyography (EMG) procedures as well as provides examples of how EMG data analysis has been used in tactical populations.