This article emphasizes environmental and nutritional dimensions in which there is enough robust evidence to make meaningful recommendations for sustainable nutrition practices.

This Personal Training Quarterly article presents time-efficient fitness strategies to maintain physical and mental health during early parenthood. Visit NSCA online to read more on nutrition, health science, and fitness news.

This article briefly explains the two principles necessary for muscle growth.

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.

All sports nutrition professionals should be able to answer basic nutrition questions. However, athletes with complex nutrition issues should be referred to the appropriate resource as explained in this book excerpt.

Before sports nutritionists and coaches begin prescribing unconventional eating recommendations to athletes, it is important to consider the scientific evidence supporting a low-carbohydrate diet for boosting athletic performance.

Personal trainers are responsible to be familiar with the sometimes fluid landscape of the nutritional counseling laws in their state and to abide by them.

This article briefly describes how individuals can have the same training program, but have large fluctuations in the adaptation responses due to genetic and life style factors.

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.