Considering the great popularity of eccentric-based training, the purpose of this review is to first provide the scientific rationale for its use; second, summarize the eccentric-based training modalities that can be used; and finally, offer practical recommendations on how to implement eccentricbased modalities to enhance sports performance. The molecular and neural mechanisms underlying eccentric actions are partially distinct from those of concentric and isometric actions. During eccentric actions, theories suggest a strain-induced modulation of actin-myosin interactions at the crossbridge level, activation of structural protein titin, and winding of titin on actin. Eccentric acute physiological responses differ from concentric exercise responses, including variations in neuromuscular, metabolic, hormonal, and anabolic signaling. Eccentric training elicits greater improvements in muscle strength, power, and stretch-shortening cycle function compared with concentric-only or traditional resistance training. Therefore, eccentric-based training can lead to unique neuromuscular (e.g., improved coordination of motor units) and morphological (e.g., increased muscle fascicle length and enhanced distal cross-sectional area) adaptations that could play a key role in sport performance. Practitioners may implement eccentric exercises with external loads, fully eccentric-based exercises (e.g., Nordic hamstring curl), accentuated eccentric loading, flywheel resistance exercise, and plyometrics to develop specific physical adaptations in line with their goals. Eccentric work (e.g., for hamstrings) can be obtained during other exercises such as downhill running tasks, decelerations, and sprinting activities. Practitioners need to be aware that no single “silver bullet” training modality exists; consequently, practitioners should use a combination of eccentric-based training approaches with their athletes to obtain the desired adaptations.

This article seeks to provide personal trainers with eight brief modifications that clients can benefit from if they suffer from both acute and chronic lower back pain (LBP).

This article covers commonly used terminology from United States of America Weightlifting (USAW), plus it contains illustrations of the basic positions for weightlifting exercises.

Triathlons are unique compared to other sports as athletes are required to master three distinct disciplines: swimming, cycling, and running. This article lays out a training program that focuses on a balance between strength training and sport training to avoid overtraining and overuse injuries and to maximize performance in a multi-sport athlete.

This article briefly reviews the importance of the stretch-shortening cycle in power production.

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

The ability to manage the adaptive response, handle accumulated fatigue, and capitalize on the aftereffects established from training is central to the training process.

This article is part of a continuing series that examines pertinent and recent tactical strength and conditioning research reviews.

This NSCA Coach article outlines the best practices for Achilles recovery in soccer. Visit NSCA online to read more on athletic performance and sports recovery.

When integrating resistance training, endurance athletes must ensure that the sessions or workouts are sequenced in the context of the overall workload. Giving careful thought to these factors when designing the training plan will increase the chances of success.