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.

The purpose of this article is to examine components that affect speed to determine the degree that speed is governed by skill versus genetic factors.

This excerpt briefly explains nutrition periodization for different training cycles to help maximize performance for endurance athletes.

This article provides a discussion around the evidence on creatine timing and supplementation.

The ketogenic diet, while controversial and a highly polarizing subject, has demonstrated promise as an alternative dietary strategy for weight management.

The purpose of this article is to discuss creatine supplementation for athletes by addressing supplementation for athletic performance, recovery, cognition, brain function, safety, contraindications, and other special considerations.

This book excerpt from Developing Endurance goes over nutritional strategies for pre-competition and during competition phases to maximize performance.

This article will discuss the balance between what an aspiring bodybuilder may expect from a personal trainer, what a personal trainer is able to provide, and how a personal trainer can be a valuable asset towards the aspiring bodybuilder’s development.

The Nutritional Research Award is given annually to recognize a nutritionist for their breakthroughs and contributions in field of nutritional research for athletes.

Dr. Lonnie Lowery spoke at the NSCA's 2012 Coaches Conference on the benefits of good fats and proteins for youth athletes.