Castle View High School Strength and Conditioning Coach says science is leading to safer training methods being used in high school weight rooms.

Access the video collection for the 2019 NBSCA Live Stream

Join the 2026 NSCA Coaching for Impact Sports Performance Summit in Columbia, SC, Sept. 26. Build athlete readiness with recovery + sport science. Earn 0.8 CEUs

Hammer Strength

Unite with our strength and conditioning community at the 2026 NSCA National Conference in New Orleans. Learn hands-on, apply new science, + earn up to 3.0 CEUs

Join the 2026 NSCA Youth Strength & Conditioning Summit in St. Paul, MN, Sept. 26. Build movement skills, training systems, and lifelong strength. Earn 0.8 CEUs

Access the video collection for the 2019 Hockey Strength and Conditioning Clinic held June 7-8, 2019 in Colorado Springs. Give your athletes a competitive edge on the ice by developing speed, agility, and quickness inside the weight room. Master off-season training, skill development drills, and performance-based nutrition strategies from NHL and collegiate level coaches with years of experience in the rink. Learn the latest training methods backed by science to help your players dominate the competition.

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.