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SCJ 46.4 Effect of Using Different Intensities in Resistance Training for Muscle Hypertrophy Gains—A Narrative Review

Quiz

Resistance training or strength training has become one of the most popular forms of exercise, because it is the only method capable of improving physical fitness and increasing muscle mass simultaneously. Among the variables of training, the relationship between intensity and volume has been extensively addressed to enhance exercise induced muscular hypertrophy. For many, mechanical stress is seen as a factor of greater relevance and, because high loads promote greater mechanical tension and high intensities are traditionally used to increase muscle mass. However, evidence has shown greater safety and similar results through training based on lower intensities and increased training volume. Thus, this narrative review aimed to search the current literature for evidence on using different training loads to promote muscle hypertrophy. An extensive nonsystematic literature review was conducted in the PubMed, Google Scholar and Scielo databases. It was possible to conclude that the use of high and low intensity promotes similar results in muscle hypertrophy in all groups, leading to the belief that there is greater safety and adherence to the use of lower intensities compared with close effort to concentric failure.

2026 NSCA Athleticism for Life Summit

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Join the 2026 NSCA Athleticism for Life Summit in Eugene, OR, on March 28. Explore athletic development for lasting performance, learn hands-on, + earn 0.8 CEUs

Position Statements

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Position statements are official statements of the NSCA on topics related to strength and conditioning and exercise science. All NSCA Position Statements are published in the Journal of Strength and Conditioning Research® and free to the public.

SCJ 47.5 Managing Fatigue in Team Sports: A Brief Review of Concurrent Training Effects Within the Microcycle

Quiz

Concurrent training (CT), which combines resistance exercise and energy systems conditioning, is the default approach to preparation in high-intensity intermittent (“stop and go”) team sports. This review provides an overview of CT, emphasizing its complexities and challenges in managing fatigue and optimizing performance. These complexities are specifically compounded by the variability in game demands across the season, where the presence of intensified and nonintensified competition periods necessitates a flexible and adaptive training approach. In this context, there are essential training variables to consider, including intensity, volume, session order, and recovery intervals between sessions. In addition, nontraining variables such as travel, sleep, and nutrition play a role in the fatigue experienced while training and competing. These variables interact to influence acute performance and training adaptations and can be strategically adjusted by strength and conditioning practitioners. The aim of this review is to provide a comprehensive understanding of fatigue management for practitioners in team sports, emphasizing the complexities and challenges of CT and offering simplified practical recommendations for adjusting training variables within any given microcycle.

Schedule

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Plan your schedule for 2026 NSCA Tactical Annual Training in Orlando. Experience practical, hands-on sessions and social events. Join us in person for 2.0 CEUs.

Membership Overview

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Connect with the best strength and conditioning content as well as thousands of professionals and begin growing your career opportunities today! Members annually receive more than 500 peer-reviewed articles and have access to more than 350 member-only lecture and demonstration videos.

NSCA History

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The National Strength and Conditioning Association was founded in 1978 with 76 strength coaches from across the country with the common desire to network, collaborate and unify the profession of strength and conditioning. Since its inception, the NSCA has grown to nearly 30,000 members in 72 countries and become the leader in the research and education of strength and conditioning professionals. Take a tour of the NSCA’s past and learn more about how it became the institution that it is today.

How Hypertrophy and Strength Training Differ: Make Sure You Get the Best of Both

Quiz

Mike Israetel discusses where strength training overlaps with hypertrophy training, and how you can get the best of both training methods.

SCJ 47.6 Perinatal Periodization: Trimester Phased Training for Beginner to Elite Athletes

Quiz

This article introduces a periodization model designed for beginner to elite perinatal athletes, emphasizing trimester-phased training aligning with gestation, delivery, and postpartum needs. Amid progressing global recommendations on perinatal exercise and increasing female participation in high-intensity and strength training, the primary aim is to propose an evidence-based, structured approach to training that consolidates these trends. The physical and psychological demands of labor mirrors that of an athletic endeavor. As such, this article explores emerging evidence supporting maternal and fetal safety and benefit of high-intensity training, allowing pregnant individuals to prepare in accordance with the task ahead. Training phases parallel to preseason, in-season, peaking, and recovery shift in focus based on the physiological need and biomechanical necessity within the pregnancy timeline. This translation of science to practice underscores the potential for tailored training programs to positively impact maternal, fetal, and neonatal health, urging further research and unified guidelines in this evolving field.
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