This TSAC Report article highlights ruck performance for tactical athletes with key insights on load carriage biomechanics, gait changes, and training strategies to reduce injury. Visit NSCA online to learn more about military strength training.

This article discusses lactate testing as a cost-effective alternative way to create advanced exercise prescriptions, as well as opening the possibility of being a new biomarker of metabolic health for personal trainers.

This article provides a brief overview of literature where regional hypertrophy was reported. It also discusses the basic science and application of regional hypertrophy training.

This excerpt from NSCA’s Essentials of Sport Science highlights the importance of quantifying training load for both programming and monitoring an athlete’s progression or regression over time.

This section from the book, Developing Endurance, gives an overview of how to plan and develop a program for endurance athletes by following four steps.

This NSCA Coach article aims to equip coaches, athletic trainers, and support staff with the knowledge and tools necessary to manage REDs among college athletes. Visit NSCA online to read more on mental health and sport performance.

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.

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.

In the first of a two part series, this article will briefly highlight the main components of a needs analysis and apply it to the context of soccer.